I had designed and then ordered a PCB for my interpretation of a protoboardunio, as a first PCB design experiment.  I had used the good service at OSH Park to make the order, and they arrived today! OSHPark effectively uses a specific colour purple as their brand, and so the envelope of course came in…

I am now more through the Udemy Arduino Step by Step course, and have a few more takeways: Cool sensors:  the membrane potentiometer and the flex sensor are cool. For pots, they have three pins, so you don’t need a second resistor to create the voltage divider.  But the flex sensor only has two pins,…