To test the assembled drive modules we need a solderless testing jig. To save time and money on PCB design and manufacturing we decided to whip out some Perfboard and doing it quick and dirty.
We ordered some pogo pins on eBay, checked our component drawer and fired up the soldering iron. The schematics can be found in our hardware repo.
Let's take a look at the result:
We use a Particle Photon to drive the test program.
To step through the program we use a pushbutton and we use a LED for feedback. The simplest IO interface there is.
We use one of our Paperino module PCBs as a guide to make sure the pogo pins are straight(ish).
Then we connect everything using wire wrap wire and some kapton to hold it in place (we didn't clean the solder joints, because we like to play hard and loose with our test jigs).
Here's what the result looks like:
Now all we have to do is wait for the module's pilot run PCBs to show up, assemble them and get some testing done.