Since my project is stationary, I would like to power all boards and motors from one 12V DC 3A wall adapter and Barrel Jack connection. However, neither the GHI Power Extender or USB Client DP Module are able to power motors directly via the Motor Driver L298.
Is there a way using the Breakout TB10 Module to adapt one of the Power Extender connections to act as motor power? Is it possible to use the Power Extender to power the main board at the same time? There is little documentation on the Power Extender and the designer does not include it either.
I can’t comment about GHI’s commercial intent, but I wouldn’t expect to see anything specifically for power in your very specific need.
What power do you need for the motor ?
A solution here depends on how “hacky” you want things to end up. You can’t take 12v from any location on the DP module or the Power Extender module, and you can’t take it from any location on a Gadgeteer socket. So that means, to me at least, you need to provide power separation before any of these modules. Choose the simplest way - in my view, splitting the input into two outputs, one for the motor and one for the existing DP module is pretty clean (and basically what I did). You could do that with a single 2.1mm barrel jack and a 2.1mm plug like I pointed to you, then using bare second set of wires into the L298 module. You could also replace the jack with the numato one you point out, but you still need a clean way to feed power into the DP, so you’ll still need a plug.
I have to agree with @ Brett as I don’t see this as ‘Hacky’ either. It’s simply a 12V supply feeding two items. If your project is in an enclosure you only need the one barrel connector with the split being hid away inside.