Trying to control and RC car with a BOE, Stamp is unresponsive

Jake11611

Hey everyone, glad this forum isn't blocked by our school's filter,

·· In·my high school engineering shop we're working on a robot to compete in a design competition (http://http://www.bu.edu/eng/design/).
We took apart an RC car and connected wires in an attempt to use the existing motor control circuits for our robot, and it seems to be working, but after running a test program several times the stamp stops responding.

···· If we disconnect it from the car and wait a few minutes, the stamp seems to be working fine.·Thinking it might be a noise issue, we gave the board a separate power supply, and connected the supplies by their ground wires.·We also put some 2.2k ohm resistors between the stamp and the wires to the car's H-bridge.

I'm not sure if we're going about this correctly, and any help would be appreciated. I'll try to post some pictures·as soon as·we can get a camera.

Mike Green

You need to provide more information. In particular, a drawing of exactly how you have the BOE connected and a copy of your code, both attached to a message (use the Post Reply button to get to the Attachment Manager).

The kind of behavior you've mentioned where the Stamp seems to work for a while, then stops, then works again after a while ... sounds like a short circuit that's causing heat to build up in the voltage regulator on the Stamp or on the BOE. The regulator shuts down until it cools off.