I am a big fan of Teensy Microcontrollers and have been working with them for a year now. The best thing about them, to me, is the speed and massive I/O compared to any other arduino board.
I recently started a project where I was going to build a simple DMX circuit with 9 faders for controlling DMX levels. As I got further in, I was inspired by Tall Dog’s Teensy 3.1/3.2 Breakouts on Tindie. I contacted my friend who is a talented EE and we sat down and worked on a custom circuit that not only breaks out the Teensy 3.6, it adds, an RS485 chip for DMX transmission, over-current protection, a regulator for up to 36V in, 9 faders, an SPI OLED screen, and a prototyping area that is inspired by breadboards with a full breakout of all unused pins all on a fairly big circuit board. I am excited about it because it will not only allow me to have a robust version of the circuit I was originally going to wire together with point-to-point wiring, it adds some of the bells and whistles (and esoteric electrical best practices) that I would have avoided (for example, a .1 uF capacitor on each potentiometer was NOT in my plan) along with being an excellent platform for future projects.
There’s a lot of expansion that has happened on this project. Since getting a custom circuit made and designed is so damned expensive, I wanted to be getting the most bang for my buck. More on this topic in a few minutes. I need to document all of the stuff that Steve and I came up with as well as a fe wprojects that I haven’t quite had the time to mention and document. Big things are happening in my life as far as learning about and transitioning to a side career in inventing film tools/engineering…and this is the coolest one yet.