Adjustable voltage booster (set to 5v)
3V3-5V logic level shifter (4 channels)
You can find the schematics diagram from v1_schematics.pdf.
You can find the Gerber files of the design from the v1_gerber folder. This is a single side PCB, with 4 jumpers. PCB is designed using Fritzing.
You can see some images of the final design (with the 3d printed enclosure) here.
I added a sample code for SSD1306 display, which is using Adafruit_SSD1306 library. I will try to add a few more libraries in future.
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.