Arduino Robot, 2 DC motor.

Projects Discussion and Showcase Robotics
1

Hello I am a Student and i just got an Arduino Starter Kit and also found 2 DC motors( make it move tank style) . i am trying to build a simple robot i can control ( haven't figured out how exactly yet). the main focus right now is to make it move forwards , backwards, left, and right. i have some basic coding skills but am really lost with the Arduino style. so any tips or pointer would be greatly appreciated

2

I recently built/coded an Arduino project for an RC tank. IMHO you should use continuous rotation servos instead of DC motors (cont rot servos have much more torque).

3

With two motors and a desire to reverse and turn the robot, you'll need to be able to reverse the direction of the motors. So, is there an h-bridge in your bag of tricks? You'll need one to reverse a motor.

The actual coding and wiring to do that, will depend on the make and model of the h-bridge.

4

Hi,
I have built a few bots! Yes you will need an H bridge of some-sort, try to avoid the L293 types as they lose power in the output stages. Look at the DVR based modules. But if you go for servos you don't need an H bridge driver, and less control pins/outputs. I can help with code, etc. Take a look at my bots at: www.melsaunders.co.uk under Electronics..

It would help us, if we could see your bot or your plains, schematic, etc. Tell us more so we can help!!

Hope it helps, Regards.

Mel.

5

the only stuff i have is what comes in the basic arduino uno starter kit, i have taken apart the servo in there and modified it to rotate freely and bypassed the chip in there, making it a dc motor.

6

Well you need to get an h-bridge if you want a bi-directional motor.

7

darkblade332:
the only stuff i have is what comes in the basic arduino uno starter kit, i have taken apart the servo in there and modified it to rotate freely and bypassed the chip in there, making it a dc motor.

Why the heck would you do that?

8

it allows me to use the servo as a faux DC Motor. i'll post a list with pics of what i have when i get home from school!

9

darkblade332:
it allows me to use the servo as a faux DC Motor.

Yeah I suspect P_B got that part, and was wondering why you a) didn't get a real DC motor and b) destroyed a (presumably) serviceable servo.

I'm wondering both of those, anyway.