
Jammie300
USA
Asked
— Edited
Hey all. I'm a complete noob to robotics and i really need some help. I want to transform my old rc truck into a robot using the ez-robot kit. I have no idea where to start or if its even possible. I've created simple robots using the kit but i was working with a team. Iv never worked alone or tried using an rc truck. Any help at all? Even its just a nudge in the right direction.
Yes it's possible.
Depending on the RC Truck there could be a few ways to accomplish it. One would be to use a H-Bridge motor controller to drive the drive wheels of the truck. You could use the H-Bridge controls to steer too however it's probably better to use a servo to turn the front wheels.
This is assuming you don't want to keep the existing RC control on the truck and use it as a base, controlled only by the EZ-B.
By the way, you're still part of a team. The EZ-Robot community will be behind you the whole way if you need us
The Ultrasonic sensor can give you a constant value of 20 if either there is something very close to the sensor that is activating it all the time or if the trigger and echo are mixed up accidentally. Try switching D0 and D1 physically or in the software just to see if the ports got mixed up somewhere in the wiring. Just to cover all bases, another thing to keep in mind is that +5V is the center pin, Gnd is on the inside (chip side) and the signals are on the outside. Hope that helps.
As far as the R/C truck goes, they have a built in h-bridge you can tap into, but is better to replace it with an h-bridge and replace the front motor with a servo for steering. I have done both method and replacing motor with servo was more effective.
As for modified servos to drive the truck, you will be disappointed with the speed of the servos. You could easily just use the existing motors and connect to a H-Bridge (if you look at the photos in that topic you will see the jumper wires I mentioned earlier)
Hot glue is an alternative solution, but screws are the most reliable solution for the right job and also to remove in the future.