How do you program the arduino motor shield R3

Projects Programming
1

How do you program the arduino motor shield R3.There absolutely no information on the programing of this shield.
Here is the link to the motor shield's main page : http://arduino.cc/en/Main/ArduinoMotorShieldR3

2

That page tells you what pin(s) you need to set HIGH or LOW to control the direction, and it tells you what pin(s) you need to analogWriite() a speed value to. What more do you need to know? Does someone need to come hold your hand?

3

PaulS:
That page tells you what pin(s) you need to set HIGH or LOW to control the direction, and it tells you what pin(s) you need to analogWriite() a speed value to. What more do you need to know? Does someone need to come hold your hand?

So the speed does not work so come hold my hand!

4

So the speed does not work so come hold my hand!

Where?

What does your code look like> Where are the jumpers on the board? How is the motor connected? How is the battery connected? Is there a load on the wheels? Or, are they just freewheeling?

5

My code looks great. Wires connected correctly. And, when the sketch only drives the two motors, it works fine! BUT, when I introduce IR the speed control stops orking and it will only work with pwm set at 255. Perhaps you could share your working code for this project, cause i'm sure yours works fine! I have no jumpers, as there is absolutely no documentation on the possible meaning &/or settings for any of the jumper options. Anxious for your help.
Thanks
Mike

6

Perhaps you should share your code. You are the one with the problem.

7

I have, many times, but to no avail. I am still looking for someone who has actually done it so that I may see how they were sucessful. I don't need someone who has never done it to cretique my coding style. In the mean time I have ordered an adafruit motor shield. I'm hoping that there will be adaquite documentation for that. Since the documentation for the Motor Shield R3 is basicly non existent!

8

If it's the same code as Arduino UNO R3 and Motor Shield R3 - Motors, Mechanics, Power and CNC - Arduino Forum then the IR library you are using makes use of timer1 which is also use by some PWM pins, so that might have a bearing.

9

Thanks, The PWM pins that I am using with the Motor Shield R3 are 3 and 11. I don't see any alternatives for the speed of the two motors so maybe that means that my idea of controlling the speed of the motors while using IR will not be possible. I have not found anything that tells me which pins the IR or Timer1 uses so I'm still stuck.

Thanks again
Mike

10

Wow, After some brainstorming and looking at the diagram for the actual printed circuit board of the Motor Shield R3, I tried the following...
I connected a wire on the Motor Shield R3 from pin 3 to pin 10 and another from pin 9 to pin 11. These are all Pwm pins.
Then I changed the program to use pins 9 and 10 for changing the speed instead of 3 and 11 and YO! it works. I can now use the
IR remote to control the direction and speed of the two motors on the Motor shield R3. Still not sure why the directions that are
included in the Arduino on-line docs don't explain why this might be necessary, but Eureeka! it is working!!!

Interested in any comments
Mike