With Hackaday’s Supercon in the rearview mirror for another year, I wanted to take the time to highlight some of the great SAOs that came out of the Hackaday SAO Contest for Supercon.Simple Add-Ons (hastily renamed Supercon Add-Ons for the event) are little circuits that you attach to your conference badge using a standard, simple 6-pin header.In this case, it’s the Etch-sAo-Sketch, coming to you from the same designer who created the core memory-based SAO.
The Etch-sAo-Sketch is a great idea for an add-on — something simple, yet entertaining and effective as a badge accessory.It has two potentiometers for the X/Y controls, but also has a 3-axis accelerometer.This SAO makes great use of the I2C bus, which was something the contest wanted to highlight.
This add-on depends on the badge’s microcontroller to drive it.The OLED and accelerometer use the I2C bus, and the two pots connect via ADC inputs on the accelerometer as well as the two GPIO pins.Pick one up while they last and use them to display info about yourself or your company, or have it draw random stick figures until someone touches the knobs — there are a lot of possibilities here! It can even be used as a general display output for any other app running on the badge.
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