Connect L9110S driver and motors



60 min.

Note : Take care, all the driver boards (L9110S) have the same output, but not the same order of pins. Look at your board to know the numbers and use test-9110s sketch to know if you're right !

  • Connect L9110S, the most important thing is to respect VCC/GND
  •  Connect VCC/GND
  • Put the switch on and test if led is on
  • To connect to arduino you should use 2*10cm connectors
  • Connect motor, one on the left, the other on the right
  • Note : This is one of the hardest part of this project to have motors working in the right direction. Here are some tips that help me
  • Test with arduino sketch (arduino/test/dcmotors/dcmotors.ino), verify that MODE is set to 0
  • upload the sketch to arduino and look at wheels and the arduino console. The wheels must turn in this order :

 Left slow - Left fast - Left slow reverse - Left fast reverse - Right slow - Right fast - Right slow reverse - Right fast reverse


Take your car from behind to know the left and the right wheel.
  • Troubelshoutting
Nothing happen with any commands Reverse connectors on arduino. Reverse 3 to 2 and 5 to 4.
The motor turn in wrong direction Reverse the two connectors of one motor.
The left motor turn instead of the right Reverse the four connectors, two by two, of the two motors.