voltage too low?

Other Hardware General Electronics
5

rkrishnan2012:
I am making an RC car and this is wired as following:

  1. I took the cellboost ipr3 apart from the shell and wired everything to this positive and neg.
  2. H-Bridge pos/ground connects to cellboost
  3. H-bridge (sn754410ne) has 2 powered motors that are pretty small but can draw some current when the car gets stuck
  4. Arduino usb 5v connects to cellboost pos.
  5. Arduino usb gnd connects to cellboost neg.
    6.Arduino usb d+ and d- connects to the cellboost's usb charger d+ and d- pins (which I think are not used by cellboost)

Please draw us a schematic. From the way you describe it I think you may be screwing up the Arduino->PC communication by messing with the D+ and D- wires. These need treating with extreme care. Please, we need a drawing. And maybe a photo too if you can.