Slides are turned in! Sent yesterday evening, a day ahead of the double-extended deadline. Tonight, I decided to make a badge add-on, now that we know the conference badge is a carrier. Nothing crazy! An extension of the first test circuit, again using tiny but easy to use parts I have on hand: three shift registers, 21 LEDs (since the 8th digit is hard to route without vias), six resistor packs, the same ESP32C3 XIAO board, and a 6-pin add-on header on the back. I have enough blue, green, and yellow 0402 LEDs, and will likely go green this time. Would be great to have orange, but time is short.