Ok, I just spent a fair amount of money on a decent but broken RC buggy... Everything about the buggy is fine EXCEPT the control board.. which is great because I don't want it anyway (I want to make my own).. So I've now started my journey of trying to figure it all out.. First issue I've ran into... my DC motor has a weird yellow thing attached in parralel (see picture) I believe it might be a resistor, but I'm not certain.. Next is that my 7.4v lithium batery (which came with the RC car) is actually measuring 8.27v :S... My thoughts might be that the pcb that it was originally connected to took the higher volts and regulated them down to 7.4, that way as the batery drained there was a constant power supply coming from the battery... thats just a guess though.
Also... I have baught a L293D IC to control the motor and then controlling the server direct from the pi.. Is there anything I should know? like is there anway to improve THIS project to add stability to voltage or to make it more reliable etc etc.
Finally... My servo that is inside of the RC car unfortunatly has 5 wires coming out of it, meaning that it needs some ic's to allow pwm control to the motor which I guess are on the old (broken) pcb... I might be able to salvage some parts off of the pcb, though I don't know if I will be able to.. These are my options:
1. find a new servo which fits in the same slot/has enough power to move rc car (1/14th) whilest it operates
2. rewire the servo I currently haves IC (its a micro servo (as seen here in this kit) to be used for the bigger servo (see below.. you will see what I mean by, ones small the others massive)
3. buy some IC's that will allow me to convert my 5 wire servo to a 3 wire (pwr, gnd, pwm) maybe the ones here or here2 or here3? (looking at the manual this looks hard... is there a kit??)
4. your suggestion that wasn't like any of these..
Thanks for all the time and help guys..
