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Unread 06-11-2005, 21:20
sciguy125 sciguy125 is offline
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Re: DARPA style RC car... sorta

Quote:
Originally Posted by 114ManualLabor
Anybody know if this would work keeping the PWM intact when I hook it up to the BOE bot?
In my own experiments, the R/C reciever outputs a 3V signal seemingly regardless of the supply voltage. Your controller will probably be putting out a 5V signal. It should be fine.

Quote:
Originally Posted by 114ManualLabor
[edit] this is, it turns out, the same voltage that the BOE bot uses. So in theory, I should be able to run the BOE bot off of the car's battery... Any ideas on how I could go about doing this? [/edit]
You can connect the battery to both devices by using a Y connector. I'm not sure if you can buy one, so you'll probably have to make one.

See if the BOE bot's PWM output is connected to the supply. Check if there's continuity between the supply lines on the PWM cable and the battery terminal. (check for continuity between the red wire and + battery terminal, then check for continuity between the black wire and - terminal) If there is continuity to BOTH, you can just connect the BOE bot to the speed controller without any problems.

If there is NOT continuity, you'll have to separate the BOE bot outputs from the supply. On the speed controller end, the supply lines on the PWM cable are connected to the supply. So, you'll have to make sure that you DO NOT connect the red wire on the BOE bot side. Well, it doesn't really matter which side is disconnected, just make sure that the power line doesn't connect the two devices. Having ground connected shouldn't be bad, and may actually be better.
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