Top Fuel ZZ Prototype (need help)
So here's the idea. The PCB can't take more than 4.5 volts, so, what if we only send it like 3 volts to only control the steering, and to send a signal to trip a relay. The relay would allow us to send as much voltage as we want directly to the motor.
In the pic, I have a 3 volt lithium watch battery which runs the steering and then I have the forward and backward wires going to the relay. In the middle there is a 6 volt cell that once the relay trips, SHOULD go directly to the motor. Problem is I'm only getting 3 volts at the motor. I don't think 3 volts is enough to completely trip the 5volt relay, so it pulses off and on, but I could be wrong. Anyhow, I think the theory is sound, I just need a small enough relay with a low enough coil voltage.
any thoughts?
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