Hello! This is the hastily thrown together page that's linked to the back of the Metamer SAO!

To see the project logs, see the Hackaday.io project.

For the motivation behind making this badge, see my portfolio page about it and my talk about it.

To interact with it, you'll need the micropython-aw210xx library.

There's some examples in the driver repo, but to see how I interact with it, see the project repo. Not only does it have additional micropython code, it also has the PY32 code running on the bootstrap I2C MCU, schematics, and other tools I used in the implementation of this fun little SAO.

If you think you're missing an LED or that one fell off: fear not, it was probably DNPed! One of the two teal 0603 LEDs are usually intentionally DNPed to save on BOM costs since the cost of each of those LEDs rivals the cost of the rest of the BOM! It's a really unique LED for the size and color so only Rohm makes it, and I guess it doesn't sell well enough to bring it to normal LED prices. If you want to fully complete your board, the upper 505nm LED is the Rohm SMLD12E2N1WT86, and the lower 496nm LED is the Rohm SMLD12E3N1WT86, both available from your favourite supplier.

There's a few versions out in the wild: if you have a green Metamer SAO, you have v1, if you have a white one without a version number on the back then you have v2.0 (Hackaday 2024), and if you have a white one with a version number on the back (top of the horseshoe) then you can figure it out from there. Version 2.1 is a minor improvement on v2.0 that removes the efuse and adds an analog switch that allows for I2C bus isolation during bootstrapping. This also brings the project fully into KiCAD!

I hope you enjoy the Metamer SAO, and of course please let me know if you run into any issues or have any questions!