Using a TB6612FNG about control-surface-motor-fader HOT 4 OPEN

Because of the asymmetry of this driver (see the H-SW Control Function table on page 4 of the datasheet, HHHH→LL and LLHH→Off), you should use the modifications explained in #18 (comment)

Using those changes, then connect the driver as follows.

To wire the motor and the power supply, see the Typical Application Diagram on page 7 of the datasheet.

If you want to use more than one fader, you'll need to change the code for the other motors as well.

from control-surface-motor-fader.

Thanks for that quick answer. The code change seems simple enough and makes sense (though I don't understand most of the code, I understand what you are changing). I'll try it tomorrow and let you know the results of my attempt.

from control-surface-motor-fader.

So I've tried it (with the test reference), but it's not working. I have a theory:
I am using an Arduino Mega rev3. The pinout of it shows the PD2 as D19, the OC2B (which is the important part about this connection if I understood your comment on the other issue correctly) is D9 and PD4 is the RX LED, which makes it inaccessible for me.
I did try it with AIN1 to D19, PWMA to D9 and AIN2 to D3 (for a lack of better option). I tried using D2, D3 and D4 as well.
Reading the fader position with the print_controller_signals flag works as expected. Driving the motor and touch detection work with a simple Arduino script, so the fader or driver aren't broken and the power supply should be sufficient.
Is there an easy way to make this work with the Arduino mega or should I just buy a nano?

Hardware:
The fader is the 5K version of the one you used.
The connections on the diagram are made with the letters / numbers from it's datasheet.

from control-surface-motor-fader.

It should be possible to make it work on the ATmega2560, but you'll have to change the pins used.

Specifically:

• pick a different port for the touch pins (e.g. PA instead of PB)
• pick different motor AIN1/2 pins
• change the overrun indicator pin from PB5 to PB7

In the code, change the following lines:

(Or your modified version)

from control-surface-motor-fader.