Voltage and Current Logger

Adafruit does a great job of making their 3D designs available in Fusion 360 archive format. That made it easy for me to modify their TFT FeatherWing Design. Specifically, I made four changes:

• removed the on-off slide switch on the left side
• added a slot for a micro rocker switch on the top
• added openings for the two 2.1 mm panel mounts
• added openings for the 2two Banana Jack panel mounts
• increased the depth to allow a Stacked FeatherWing (the INA219 Featherwing) and assorted wires

I've uploaded the STL files in the documents section, and I'm linking to the Adafruit post containing the original CAD files -> https://learn.adafruit.com/3d-printed-case-for-adafruit-feather/overview

I needed to make something quick and easy for measuring voltage. I didn't want to spend a lot of money, and I wanted to leverage components I already had.

I've updated the components section to build exactly what I've built.... but I strongly suggest you consider other pieces/parts if you decide to build this.

1. Use an ESP32 Feather instead of the Cortex M0 Wifi. The ESP32 is my go-to SoC these days. I didn't use this Feather because I had two Cortex M0 Wifi feathers lying unused. 
2. Determine if you really need to save to SD; if not use a OLED screen. I only used the TFT FeatherWing because I have three sitting unused.