Asked — Edited

Ez-Tec Rc Truck To Robot

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.


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United Kingdom
#1  

Slight nudge (expect more nudges from other members).

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:)

#2  

That is extremely comforting to know. Thank you. I thought I wouldnt get much help. And is there a way to use both the rc controller and the ezb?

#3  

You might consider adding the video camera and maybe the sonar unit to avoid obstacles. It may be possible to preserve the remote control portion of your RC car but normally folks either use the EZ-B or the remote control just not at the same time.

#4  

something is wrong with the sonar unit. Ive soldered everything correctly but when testing the distance, it stays stuck on 20. I have the trigger on D0 and the echo on D1 yet the distance does not change. Could I have shorted it out? Power seems to go through it as it gets hot and when echo is unplugged, the distance jumps randomly between 20 and 255

#5  

I've heard of this, so your not the only one. I'll wait for someone with experience to comment.

PRO
Canada
#6  

Hi @Jammie300

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.

#7  

The HC-SR04 is very sensitive and easily short circuit. I am currently on my 10th Sonar. The slightest mistake will burn them, Usually if it is reading a value of 20 or a value of 255, mean something went wrong. It is easier to simply replace it.

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.

#8  

They sell the us ping sensor at radio shack also so its easy to get one. I can't remember the cost off hand though, sorry.