Why is Arduino resetting while driving motors?












1















I am driving motors for my line-follower project . The circuit schematic is given below Circuit schematic



The power source is a 11.1V 2200mAh 25C Lipo . Practically the cells give 11.5-12V. I used a switching buck regulator to step down the voltage. However , when i run my robot on track after few seconds,the arduino tends to reset and run again. This problem typically arises when i drive the motors at higher PWM(above 180 on analogWrite function). Since i use PID, limiting the PWM means i have to drive at lower speeds which i do not want.



I am providing links for the items i used for my circuit:




  1. buck converter;


  2. motor driver;


  3. IR sensor module;


  4. DC motors.



The sensor array draws 150mA at peak. Any suggestions as to where the problem might lie would be of great help. Thank you .










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  • The buck converter is producing 5.5 V? That may be too low for the VIN input on Arduino, where the voltage regulator needs at least 7 V and is therefore causing brown-out.

    – MichaelT
    2 days ago
















1















I am driving motors for my line-follower project . The circuit schematic is given below Circuit schematic



The power source is a 11.1V 2200mAh 25C Lipo . Practically the cells give 11.5-12V. I used a switching buck regulator to step down the voltage. However , when i run my robot on track after few seconds,the arduino tends to reset and run again. This problem typically arises when i drive the motors at higher PWM(above 180 on analogWrite function). Since i use PID, limiting the PWM means i have to drive at lower speeds which i do not want.



I am providing links for the items i used for my circuit:




  1. buck converter;


  2. motor driver;


  3. IR sensor module;


  4. DC motors.



The sensor array draws 150mA at peak. Any suggestions as to where the problem might lie would be of great help. Thank you .










share|improve this question









New contributor




user9999114 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.





















  • The buck converter is producing 5.5 V? That may be too low for the VIN input on Arduino, where the voltage regulator needs at least 7 V and is therefore causing brown-out.

    – MichaelT
    2 days ago














1












1








1








I am driving motors for my line-follower project . The circuit schematic is given below Circuit schematic



The power source is a 11.1V 2200mAh 25C Lipo . Practically the cells give 11.5-12V. I used a switching buck regulator to step down the voltage. However , when i run my robot on track after few seconds,the arduino tends to reset and run again. This problem typically arises when i drive the motors at higher PWM(above 180 on analogWrite function). Since i use PID, limiting the PWM means i have to drive at lower speeds which i do not want.



I am providing links for the items i used for my circuit:




  1. buck converter;


  2. motor driver;


  3. IR sensor module;


  4. DC motors.



The sensor array draws 150mA at peak. Any suggestions as to where the problem might lie would be of great help. Thank you .










share|improve this question









New contributor




user9999114 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.












I am driving motors for my line-follower project . The circuit schematic is given below Circuit schematic



The power source is a 11.1V 2200mAh 25C Lipo . Practically the cells give 11.5-12V. I used a switching buck regulator to step down the voltage. However , when i run my robot on track after few seconds,the arduino tends to reset and run again. This problem typically arises when i drive the motors at higher PWM(above 180 on analogWrite function). Since i use PID, limiting the PWM means i have to drive at lower speeds which i do not want.



I am providing links for the items i used for my circuit:




  1. buck converter;


  2. motor driver;


  3. IR sensor module;


  4. DC motors.



The sensor array draws 150mA at peak. Any suggestions as to where the problem might lie would be of great help. Thank you .







arduino-mega power motor ir






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edited yesterday









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asked 2 days ago









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  • The buck converter is producing 5.5 V? That may be too low for the VIN input on Arduino, where the voltage regulator needs at least 7 V and is therefore causing brown-out.

    – MichaelT
    2 days ago



















  • The buck converter is producing 5.5 V? That may be too low for the VIN input on Arduino, where the voltage regulator needs at least 7 V and is therefore causing brown-out.

    – MichaelT
    2 days ago

















The buck converter is producing 5.5 V? That may be too low for the VIN input on Arduino, where the voltage regulator needs at least 7 V and is therefore causing brown-out.

– MichaelT
2 days ago





The buck converter is producing 5.5 V? That may be too low for the VIN input on Arduino, where the voltage regulator needs at least 7 V and is therefore causing brown-out.

– MichaelT
2 days ago










5 Answers
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4














The VIN pin goes to a 5V voltage regulator on the Arduino and needs at least about 7V minimum to work properly. If you want to supply 5V to an Arduino do it either on the 5V pin or via the USB connector. The VIN pin should receive 7V to 12V.






share|improve this answer
























  • This is the correct answer. VIN a high enough voltage to be regulated down to 5V. I suggest feeding 5V into your USB connector. That way you don't bypass the source switching and protection circuitry on the Arduino.

    – Duncan C
    2 days ago











  • @DuncanC Doesn't the USB connector also have a regulator, or does it expect that the USB can consistently provide 5V?

    – MindS1
    yesterday











  • @MindS1, read store.arduino.cc/mega-2560-r3

    – Juraj
    yesterday











  • No, USB provides regulated 5V, and is fed through some logic and current limiting circuits to the +5V rail. The Arduino uses a linear regulator, which needs a couple of volts more than it's target voltage. (IT works by applying a variable resistance to the input, converting the excess voltage to heat. )

    – Duncan C
    yesterday











  • You might get away with feeding 5V into the VIN if you draw VERY low current from it, and if there is no voltage sag, but it's not recommended.

    – Duncan C
    yesterday



















1














Resetting is due either to a software bug or voltage sag, and since it correlates with driving the motors harder, it's almost certainly the latter. You probably suspected as much since you mentioned the current draw of the sensor array. A quick experiment - disconnecting the sensors (and possibly a software patch to keep the robot running straight, without them) might help you discover the reason.



Each chip and each of its pin drivers has a current budget. It would be a good idea to look at the max current spec of the Atmega2560 and its pin drivers, and any other current specs mentioned in the datasheet, and make sure you're not trying to run it out of spec. The buck converter will have a limit, too, so make sure you're within its spec. If the output regulation of the buck converter is good enough, you can regulate it to 5v and bypass the Mega's on board regulator, for another saving.






share|improve this answer































    1














    This is the common issue when trying to connect power and digital circuits together. Probably, when motor starts, there is a short-time voltage drop in Vin due to high motor start current. Consider to use Schottky diode and capacitor to protect digital power circuit from transitional currents.enter image description here






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    Andrey Yudaev is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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      0














      One major drawback to working with motors is the large amounts of electrical noise they produce. This noise can interfere with your sensors and can even impair your microcontroller by causing voltage dips on your regulated power line. Large enough voltage dips can corrupt the data in microcontroller registers or cause the microcontroller to reset. You can avoid this problem by soldering capacitors along your motor terminals. Use 1µF ceramic capacitors for example






      share|improve this answer
























      • Why the down-vote? Everything in this answer is good advice. Motors introduce a lot of noise on the power input. Adding filter capacitors is a very good idea. (That said, the biggest problem is likely too low an input voltage to VIN)

        – Duncan C
        2 days ago











      • I've experienced this myself too. Also vibration causing wires to become loose.

        – Kingsley
        yesterday











      • This might be a good idea . I noticed the voltage up/down surge problems on start-up initially or after breaking . On which type of motors do you use these capacitors ? Do they affect the motor performance ?

        – user9999114
        20 hours ago











      • @user9999114 On brush motors mostly. They don't have an affect (that I one could notice) on the motor perfomance

        – Zunzulla alagaty
        4 hours ago



















      0














      You should either feed the 5.5v from the buck converter to the 5v pin of the arduino, or the 11.5v to the Vin.
      The arduino board contains its own 5v converter (and a 3.3v but that's not in question here). That takes the voltage of the Vin pin and converts it to 5v for the board to use. This regulated 5 v is available on the 5v pin for your sensors for example.



      You can also power it directly on the 5v pin, but that requires regulated 5v. This is also how it is powered through USB which supplied regulated 5 v.



      The 5.5 v from your buck should be fine for this, by you don't need it. Put the "raw" 11.5 to the Vin pin.






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        5 Answers
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        5 Answers
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        active

        oldest

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        active

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        active

        oldest

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        4














        The VIN pin goes to a 5V voltage regulator on the Arduino and needs at least about 7V minimum to work properly. If you want to supply 5V to an Arduino do it either on the 5V pin or via the USB connector. The VIN pin should receive 7V to 12V.






        share|improve this answer
























        • This is the correct answer. VIN a high enough voltage to be regulated down to 5V. I suggest feeding 5V into your USB connector. That way you don't bypass the source switching and protection circuitry on the Arduino.

          – Duncan C
          2 days ago











        • @DuncanC Doesn't the USB connector also have a regulator, or does it expect that the USB can consistently provide 5V?

          – MindS1
          yesterday











        • @MindS1, read store.arduino.cc/mega-2560-r3

          – Juraj
          yesterday











        • No, USB provides regulated 5V, and is fed through some logic and current limiting circuits to the +5V rail. The Arduino uses a linear regulator, which needs a couple of volts more than it's target voltage. (IT works by applying a variable resistance to the input, converting the excess voltage to heat. )

          – Duncan C
          yesterday











        • You might get away with feeding 5V into the VIN if you draw VERY low current from it, and if there is no voltage sag, but it's not recommended.

          – Duncan C
          yesterday
















        4














        The VIN pin goes to a 5V voltage regulator on the Arduino and needs at least about 7V minimum to work properly. If you want to supply 5V to an Arduino do it either on the 5V pin or via the USB connector. The VIN pin should receive 7V to 12V.






        share|improve this answer
























        • This is the correct answer. VIN a high enough voltage to be regulated down to 5V. I suggest feeding 5V into your USB connector. That way you don't bypass the source switching and protection circuitry on the Arduino.

          – Duncan C
          2 days ago











        • @DuncanC Doesn't the USB connector also have a regulator, or does it expect that the USB can consistently provide 5V?

          – MindS1
          yesterday











        • @MindS1, read store.arduino.cc/mega-2560-r3

          – Juraj
          yesterday











        • No, USB provides regulated 5V, and is fed through some logic and current limiting circuits to the +5V rail. The Arduino uses a linear regulator, which needs a couple of volts more than it's target voltage. (IT works by applying a variable resistance to the input, converting the excess voltage to heat. )

          – Duncan C
          yesterday











        • You might get away with feeding 5V into the VIN if you draw VERY low current from it, and if there is no voltage sag, but it's not recommended.

          – Duncan C
          yesterday














        4












        4








        4







        The VIN pin goes to a 5V voltage regulator on the Arduino and needs at least about 7V minimum to work properly. If you want to supply 5V to an Arduino do it either on the 5V pin or via the USB connector. The VIN pin should receive 7V to 12V.






        share|improve this answer













        The VIN pin goes to a 5V voltage regulator on the Arduino and needs at least about 7V minimum to work properly. If you want to supply 5V to an Arduino do it either on the 5V pin or via the USB connector. The VIN pin should receive 7V to 12V.







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered 2 days ago









        Jeff WahausJeff Wahaus

        4435




        4435













        • This is the correct answer. VIN a high enough voltage to be regulated down to 5V. I suggest feeding 5V into your USB connector. That way you don't bypass the source switching and protection circuitry on the Arduino.

          – Duncan C
          2 days ago











        • @DuncanC Doesn't the USB connector also have a regulator, or does it expect that the USB can consistently provide 5V?

          – MindS1
          yesterday











        • @MindS1, read store.arduino.cc/mega-2560-r3

          – Juraj
          yesterday











        • No, USB provides regulated 5V, and is fed through some logic and current limiting circuits to the +5V rail. The Arduino uses a linear regulator, which needs a couple of volts more than it's target voltage. (IT works by applying a variable resistance to the input, converting the excess voltage to heat. )

          – Duncan C
          yesterday











        • You might get away with feeding 5V into the VIN if you draw VERY low current from it, and if there is no voltage sag, but it's not recommended.

          – Duncan C
          yesterday



















        • This is the correct answer. VIN a high enough voltage to be regulated down to 5V. I suggest feeding 5V into your USB connector. That way you don't bypass the source switching and protection circuitry on the Arduino.

          – Duncan C
          2 days ago











        • @DuncanC Doesn't the USB connector also have a regulator, or does it expect that the USB can consistently provide 5V?

          – MindS1
          yesterday











        • @MindS1, read store.arduino.cc/mega-2560-r3

          – Juraj
          yesterday











        • No, USB provides regulated 5V, and is fed through some logic and current limiting circuits to the +5V rail. The Arduino uses a linear regulator, which needs a couple of volts more than it's target voltage. (IT works by applying a variable resistance to the input, converting the excess voltage to heat. )

          – Duncan C
          yesterday











        • You might get away with feeding 5V into the VIN if you draw VERY low current from it, and if there is no voltage sag, but it's not recommended.

          – Duncan C
          yesterday

















        This is the correct answer. VIN a high enough voltage to be regulated down to 5V. I suggest feeding 5V into your USB connector. That way you don't bypass the source switching and protection circuitry on the Arduino.

        – Duncan C
        2 days ago





        This is the correct answer. VIN a high enough voltage to be regulated down to 5V. I suggest feeding 5V into your USB connector. That way you don't bypass the source switching and protection circuitry on the Arduino.

        – Duncan C
        2 days ago













        @DuncanC Doesn't the USB connector also have a regulator, or does it expect that the USB can consistently provide 5V?

        – MindS1
        yesterday





        @DuncanC Doesn't the USB connector also have a regulator, or does it expect that the USB can consistently provide 5V?

        – MindS1
        yesterday













        @MindS1, read store.arduino.cc/mega-2560-r3

        – Juraj
        yesterday





        @MindS1, read store.arduino.cc/mega-2560-r3

        – Juraj
        yesterday













        No, USB provides regulated 5V, and is fed through some logic and current limiting circuits to the +5V rail. The Arduino uses a linear regulator, which needs a couple of volts more than it's target voltage. (IT works by applying a variable resistance to the input, converting the excess voltage to heat. )

        – Duncan C
        yesterday





        No, USB provides regulated 5V, and is fed through some logic and current limiting circuits to the +5V rail. The Arduino uses a linear regulator, which needs a couple of volts more than it's target voltage. (IT works by applying a variable resistance to the input, converting the excess voltage to heat. )

        – Duncan C
        yesterday













        You might get away with feeding 5V into the VIN if you draw VERY low current from it, and if there is no voltage sag, but it's not recommended.

        – Duncan C
        yesterday





        You might get away with feeding 5V into the VIN if you draw VERY low current from it, and if there is no voltage sag, but it's not recommended.

        – Duncan C
        yesterday











        1














        Resetting is due either to a software bug or voltage sag, and since it correlates with driving the motors harder, it's almost certainly the latter. You probably suspected as much since you mentioned the current draw of the sensor array. A quick experiment - disconnecting the sensors (and possibly a software patch to keep the robot running straight, without them) might help you discover the reason.



        Each chip and each of its pin drivers has a current budget. It would be a good idea to look at the max current spec of the Atmega2560 and its pin drivers, and any other current specs mentioned in the datasheet, and make sure you're not trying to run it out of spec. The buck converter will have a limit, too, so make sure you're within its spec. If the output regulation of the buck converter is good enough, you can regulate it to 5v and bypass the Mega's on board regulator, for another saving.






        share|improve this answer




























          1














          Resetting is due either to a software bug or voltage sag, and since it correlates with driving the motors harder, it's almost certainly the latter. You probably suspected as much since you mentioned the current draw of the sensor array. A quick experiment - disconnecting the sensors (and possibly a software patch to keep the robot running straight, without them) might help you discover the reason.



          Each chip and each of its pin drivers has a current budget. It would be a good idea to look at the max current spec of the Atmega2560 and its pin drivers, and any other current specs mentioned in the datasheet, and make sure you're not trying to run it out of spec. The buck converter will have a limit, too, so make sure you're within its spec. If the output regulation of the buck converter is good enough, you can regulate it to 5v and bypass the Mega's on board regulator, for another saving.






          share|improve this answer


























            1












            1








            1







            Resetting is due either to a software bug or voltage sag, and since it correlates with driving the motors harder, it's almost certainly the latter. You probably suspected as much since you mentioned the current draw of the sensor array. A quick experiment - disconnecting the sensors (and possibly a software patch to keep the robot running straight, without them) might help you discover the reason.



            Each chip and each of its pin drivers has a current budget. It would be a good idea to look at the max current spec of the Atmega2560 and its pin drivers, and any other current specs mentioned in the datasheet, and make sure you're not trying to run it out of spec. The buck converter will have a limit, too, so make sure you're within its spec. If the output regulation of the buck converter is good enough, you can regulate it to 5v and bypass the Mega's on board regulator, for another saving.






            share|improve this answer













            Resetting is due either to a software bug or voltage sag, and since it correlates with driving the motors harder, it's almost certainly the latter. You probably suspected as much since you mentioned the current draw of the sensor array. A quick experiment - disconnecting the sensors (and possibly a software patch to keep the robot running straight, without them) might help you discover the reason.



            Each chip and each of its pin drivers has a current budget. It would be a good idea to look at the max current spec of the Atmega2560 and its pin drivers, and any other current specs mentioned in the datasheet, and make sure you're not trying to run it out of spec. The buck converter will have a limit, too, so make sure you're within its spec. If the output regulation of the buck converter is good enough, you can regulate it to 5v and bypass the Mega's on board regulator, for another saving.







            share|improve this answer












            share|improve this answer



            share|improve this answer










            answered 2 days ago









            JRobertJRobert

            10.2k21136




            10.2k21136























                1














                This is the common issue when trying to connect power and digital circuits together. Probably, when motor starts, there is a short-time voltage drop in Vin due to high motor start current. Consider to use Schottky diode and capacitor to protect digital power circuit from transitional currents.enter image description here






                share|improve this answer








                New contributor




                Andrey Yudaev is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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                  1














                  This is the common issue when trying to connect power and digital circuits together. Probably, when motor starts, there is a short-time voltage drop in Vin due to high motor start current. Consider to use Schottky diode and capacitor to protect digital power circuit from transitional currents.enter image description here






                  share|improve this answer








                  New contributor




                  Andrey Yudaev is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                  Check out our Code of Conduct.























                    1












                    1








                    1







                    This is the common issue when trying to connect power and digital circuits together. Probably, when motor starts, there is a short-time voltage drop in Vin due to high motor start current. Consider to use Schottky diode and capacitor to protect digital power circuit from transitional currents.enter image description here






                    share|improve this answer








                    New contributor




                    Andrey Yudaev is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                    Check out our Code of Conduct.










                    This is the common issue when trying to connect power and digital circuits together. Probably, when motor starts, there is a short-time voltage drop in Vin due to high motor start current. Consider to use Schottky diode and capacitor to protect digital power circuit from transitional currents.enter image description here







                    share|improve this answer








                    New contributor




                    Andrey Yudaev is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                    Check out our Code of Conduct.









                    share|improve this answer



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                    answered yesterday









                    Andrey YudaevAndrey Yudaev

                    111




                    111




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                    New contributor





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                        0














                        One major drawback to working with motors is the large amounts of electrical noise they produce. This noise can interfere with your sensors and can even impair your microcontroller by causing voltage dips on your regulated power line. Large enough voltage dips can corrupt the data in microcontroller registers or cause the microcontroller to reset. You can avoid this problem by soldering capacitors along your motor terminals. Use 1µF ceramic capacitors for example






                        share|improve this answer
























                        • Why the down-vote? Everything in this answer is good advice. Motors introduce a lot of noise on the power input. Adding filter capacitors is a very good idea. (That said, the biggest problem is likely too low an input voltage to VIN)

                          – Duncan C
                          2 days ago











                        • I've experienced this myself too. Also vibration causing wires to become loose.

                          – Kingsley
                          yesterday











                        • This might be a good idea . I noticed the voltage up/down surge problems on start-up initially or after breaking . On which type of motors do you use these capacitors ? Do they affect the motor performance ?

                          – user9999114
                          20 hours ago











                        • @user9999114 On brush motors mostly. They don't have an affect (that I one could notice) on the motor perfomance

                          – Zunzulla alagaty
                          4 hours ago
















                        0














                        One major drawback to working with motors is the large amounts of electrical noise they produce. This noise can interfere with your sensors and can even impair your microcontroller by causing voltage dips on your regulated power line. Large enough voltage dips can corrupt the data in microcontroller registers or cause the microcontroller to reset. You can avoid this problem by soldering capacitors along your motor terminals. Use 1µF ceramic capacitors for example






                        share|improve this answer
























                        • Why the down-vote? Everything in this answer is good advice. Motors introduce a lot of noise on the power input. Adding filter capacitors is a very good idea. (That said, the biggest problem is likely too low an input voltage to VIN)

                          – Duncan C
                          2 days ago











                        • I've experienced this myself too. Also vibration causing wires to become loose.

                          – Kingsley
                          yesterday











                        • This might be a good idea . I noticed the voltage up/down surge problems on start-up initially or after breaking . On which type of motors do you use these capacitors ? Do they affect the motor performance ?

                          – user9999114
                          20 hours ago











                        • @user9999114 On brush motors mostly. They don't have an affect (that I one could notice) on the motor perfomance

                          – Zunzulla alagaty
                          4 hours ago














                        0












                        0








                        0







                        One major drawback to working with motors is the large amounts of electrical noise they produce. This noise can interfere with your sensors and can even impair your microcontroller by causing voltage dips on your regulated power line. Large enough voltage dips can corrupt the data in microcontroller registers or cause the microcontroller to reset. You can avoid this problem by soldering capacitors along your motor terminals. Use 1µF ceramic capacitors for example






                        share|improve this answer













                        One major drawback to working with motors is the large amounts of electrical noise they produce. This noise can interfere with your sensors and can even impair your microcontroller by causing voltage dips on your regulated power line. Large enough voltage dips can corrupt the data in microcontroller registers or cause the microcontroller to reset. You can avoid this problem by soldering capacitors along your motor terminals. Use 1µF ceramic capacitors for example







                        share|improve this answer












                        share|improve this answer



                        share|improve this answer










                        answered 2 days ago









                        Zunzulla alagatyZunzulla alagaty

                        10911




                        10911













                        • Why the down-vote? Everything in this answer is good advice. Motors introduce a lot of noise on the power input. Adding filter capacitors is a very good idea. (That said, the biggest problem is likely too low an input voltage to VIN)

                          – Duncan C
                          2 days ago











                        • I've experienced this myself too. Also vibration causing wires to become loose.

                          – Kingsley
                          yesterday











                        • This might be a good idea . I noticed the voltage up/down surge problems on start-up initially or after breaking . On which type of motors do you use these capacitors ? Do they affect the motor performance ?

                          – user9999114
                          20 hours ago











                        • @user9999114 On brush motors mostly. They don't have an affect (that I one could notice) on the motor perfomance

                          – Zunzulla alagaty
                          4 hours ago



















                        • Why the down-vote? Everything in this answer is good advice. Motors introduce a lot of noise on the power input. Adding filter capacitors is a very good idea. (That said, the biggest problem is likely too low an input voltage to VIN)

                          – Duncan C
                          2 days ago











                        • I've experienced this myself too. Also vibration causing wires to become loose.

                          – Kingsley
                          yesterday











                        • This might be a good idea . I noticed the voltage up/down surge problems on start-up initially or after breaking . On which type of motors do you use these capacitors ? Do they affect the motor performance ?

                          – user9999114
                          20 hours ago











                        • @user9999114 On brush motors mostly. They don't have an affect (that I one could notice) on the motor perfomance

                          – Zunzulla alagaty
                          4 hours ago

















                        Why the down-vote? Everything in this answer is good advice. Motors introduce a lot of noise on the power input. Adding filter capacitors is a very good idea. (That said, the biggest problem is likely too low an input voltage to VIN)

                        – Duncan C
                        2 days ago





                        Why the down-vote? Everything in this answer is good advice. Motors introduce a lot of noise on the power input. Adding filter capacitors is a very good idea. (That said, the biggest problem is likely too low an input voltage to VIN)

                        – Duncan C
                        2 days ago













                        I've experienced this myself too. Also vibration causing wires to become loose.

                        – Kingsley
                        yesterday





                        I've experienced this myself too. Also vibration causing wires to become loose.

                        – Kingsley
                        yesterday













                        This might be a good idea . I noticed the voltage up/down surge problems on start-up initially or after breaking . On which type of motors do you use these capacitors ? Do they affect the motor performance ?

                        – user9999114
                        20 hours ago





                        This might be a good idea . I noticed the voltage up/down surge problems on start-up initially or after breaking . On which type of motors do you use these capacitors ? Do they affect the motor performance ?

                        – user9999114
                        20 hours ago













                        @user9999114 On brush motors mostly. They don't have an affect (that I one could notice) on the motor perfomance

                        – Zunzulla alagaty
                        4 hours ago





                        @user9999114 On brush motors mostly. They don't have an affect (that I one could notice) on the motor perfomance

                        – Zunzulla alagaty
                        4 hours ago











                        0














                        You should either feed the 5.5v from the buck converter to the 5v pin of the arduino, or the 11.5v to the Vin.
                        The arduino board contains its own 5v converter (and a 3.3v but that's not in question here). That takes the voltage of the Vin pin and converts it to 5v for the board to use. This regulated 5 v is available on the 5v pin for your sensors for example.



                        You can also power it directly on the 5v pin, but that requires regulated 5v. This is also how it is powered through USB which supplied regulated 5 v.



                        The 5.5 v from your buck should be fine for this, by you don't need it. Put the "raw" 11.5 to the Vin pin.






                        share|improve this answer








                        New contributor




                        Christian Thomsen is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                        Check out our Code of Conduct.

























                          0














                          You should either feed the 5.5v from the buck converter to the 5v pin of the arduino, or the 11.5v to the Vin.
                          The arduino board contains its own 5v converter (and a 3.3v but that's not in question here). That takes the voltage of the Vin pin and converts it to 5v for the board to use. This regulated 5 v is available on the 5v pin for your sensors for example.



                          You can also power it directly on the 5v pin, but that requires regulated 5v. This is also how it is powered through USB which supplied regulated 5 v.



                          The 5.5 v from your buck should be fine for this, by you don't need it. Put the "raw" 11.5 to the Vin pin.






                          share|improve this answer








                          New contributor




                          Christian Thomsen is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                          Check out our Code of Conduct.























                            0












                            0








                            0







                            You should either feed the 5.5v from the buck converter to the 5v pin of the arduino, or the 11.5v to the Vin.
                            The arduino board contains its own 5v converter (and a 3.3v but that's not in question here). That takes the voltage of the Vin pin and converts it to 5v for the board to use. This regulated 5 v is available on the 5v pin for your sensors for example.



                            You can also power it directly on the 5v pin, but that requires regulated 5v. This is also how it is powered through USB which supplied regulated 5 v.



                            The 5.5 v from your buck should be fine for this, by you don't need it. Put the "raw" 11.5 to the Vin pin.






                            share|improve this answer








                            New contributor




                            Christian Thomsen is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                            Check out our Code of Conduct.










                            You should either feed the 5.5v from the buck converter to the 5v pin of the arduino, or the 11.5v to the Vin.
                            The arduino board contains its own 5v converter (and a 3.3v but that's not in question here). That takes the voltage of the Vin pin and converts it to 5v for the board to use. This regulated 5 v is available on the 5v pin for your sensors for example.



                            You can also power it directly on the 5v pin, but that requires regulated 5v. This is also how it is powered through USB which supplied regulated 5 v.



                            The 5.5 v from your buck should be fine for this, by you don't need it. Put the "raw" 11.5 to the Vin pin.







                            share|improve this answer








                            New contributor




                            Christian Thomsen is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                            Check out our Code of Conduct.









                            share|improve this answer



                            share|improve this answer






                            New contributor




                            Christian Thomsen is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                            Check out our Code of Conduct.









                            answered yesterday









                            Christian ThomsenChristian Thomsen

                            1




                            1




                            New contributor




                            Christian Thomsen is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                            Check out our Code of Conduct.





                            New contributor





                            Christian Thomsen is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                            Check out our Code of Conduct.






                            Christian Thomsen is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                            Check out our Code of Conduct.






















                                user9999114 is a new contributor. Be nice, and check out our Code of Conduct.










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                                user9999114 is a new contributor. Be nice, and check out our Code of Conduct.













                                user9999114 is a new contributor. Be nice, and check out our Code of Conduct.












                                user9999114 is a new contributor. Be nice, and check out our Code of Conduct.
















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