well, :), the shield seems to be highly configurable, so there is little chance a have a patch ready. what you should do is debugging step by step. I would put a simple LED on the pin i want to steer. if the LED dims, then it is the configuration of the board you need to tweak. else it is in your patch.
follow the help patch of the arduino module. afaik it is set up so the led on pin 9 (or 6) dims. note, that with the standard firmata only the actual PWM pins are dimmable. i know there is a custom PWM library for the arduino to also dim other pins, but this is not used in the standard firmata (the module is made for).
Could you please also tell us more on your motor (Volts and Amps), because usually carwindow motor are consuming more than 2.5 Amps (which is the maximum that your board can handle). So even if all is working well, your motor will not turn…
You can try to replace your motor by a multimeter (in voltmeter mode) and check if the tension is changing when you actually modify the corresponding pwm output through the arduino firmata in v4.
dimming led on arduino works, but nothing comes through the shield, even when working with a voltmeter (thanks rogerlette for the advice)
(btw, carwiper runs on a 2.25a 6v source, will be fine i think, but i will purchase this other board too, looks quite sturdy!)
so from vvvv, there is a max of 2 pwms I can control? so I would never be able to stear 7 pwm motors… (thats what i want)
is there maybe a arduino patch that communicates with vvv AND dims all the pins? anybody knows of that?
Lets do it step by step. Sur ewe will find what’s going wrong.
First you check the arduino : You succeed to dim a led (with the fading example of the arduino IDE I supposed). This means your arduino is working well.
Then you must check the motor shield : Suposing you are using the fading example of arduino IDE, means that you actually fade the pin 9.
Plug your shield onto the arduino, power the shield with an external power supply (+ PWR -). (12V-1Amps for example)
Then connect your voltmeter between the output 3 and 4. You should see a 12V fading output ? Is that working ?