The perfect pairing of an OLED Display, analog potentiometers, and a 3-axis accelerometer!
Follow this project at: https://hackaday.io/project/197581-etch-sao-sketch
This version is being developed for Hackaday Europe 2025 with a separate repository located here: https://github.com/ageppert/SAO_Sketch
Coming soon... Refinements to include:
- Enable full range of the analog pots via the accelerometer ADC inputs.
- Use a taller male SAO header for easier connection to the main (red) PCBA.
- Tweak alignment hole size/position for the alignment spheres and OLED position.
Otherwise, it looks and functions just like V1.0.
This version was shared at Hackaday Supercon 2024. It is available for purchase here: https://www.tindie.com/products/36383/
V1.0 ERRATA: The full travel of the analog pots is only available through GPIO1/2 of the SAO port. A reduced range of travel is available through the accelerometer ADC inputs. The included SAO Header pins need to be pushed back into the header body 1 mm so they extend far enough to be connected to the red PCBA after the OLED PCBA is stacked on the bottom.