It’s been more than a year since I updated this space! The Double-Oh project was mothballed for most of that time, but there have been a few significant developments. Here’s a timeline:

• September 11, 2020 – I ran a live demo via Twitter, using PCB version 2.6 and firmware version 0.6, which was very encouraging. Dazed Digital interviews me and it gets picked up by a few other sites (in English and Russian!).
• September 23, 2020 – The demo gets talked about by comedy drive-time radio DJs in Philadelphia and Indianapolis; the Philly ones entertain my request to play a Mr. Bungle song on the radio. I assume this causes dozens of people to go "Oh, I remember Mr. Bungle, that's cool. I wonder what they're up to now."
• September 25, 2020 – Double-Oh PCB v2.7 and Firmware v1.0 receive OSHWA certification as DE000091. I believe this is the first time an OSHW project certification has been granted to a fursona.
• Early October, 2020 – I make a Double-Oh demo that vibrates in sync with Pokémon Pinball gameplay. I'd like to make more handheld-console vibrator hacks, especially on original hardware. Get in touch if you can help! Please don't tell Nintendo.
• October 16, 2020 – Make: Magazine publishes their monthly OSHW rundown, "Open Source Hardware Certifications For September 2020". The Double-Oh is not mentioned; this is probably a wise decision.
• October 20, 2020 – Mr. Bungle releases The Raging Wrath of the Easter Bunny Demo, their first album since 1999. It gets very good reviews and sells pretty well.
• November 2020 to May 2021 – The Double-Oh project is put on hold so I can focus on other projects, like "my life falls apart further" and "I move to Los Angeles for some reason".
• June 2021 – I try assembling more Double-Ohs. I have ten TPS62400 ICs and seven of them do not work. Is it my fault? Possibly. Was I emotionally prepared for this (extremely benign) incident? Absolutely not. The TPS62400 is dead to me now.
• August 2022 – Testing begins on Double-Oh v3.0. The board now features single-sided component placement, better contacts for the li-ion cell, support for multiple USB-UART ICs, support for multiple voltage supervisors, support for either the ESP32-PICO-V3 or the ESP32-PICO-D4, and a pair of adorable TPSM82821x ICs in place of the TPS62400.

Of course, the v3.0 PCB deserves a more thorough project log. The Pokémon Pinball thing might need its own log, as well. These will come soon! I've run into multiple mysteries on the v3.0 board that I'd love your input on. A new batch of PCBs arrives next week, so expect a writeup not long after that.