UPDeeDeeI SAO

This mischievous moth is here to help you with your embedded development needs. Using a CH340E, it can program UPDI devices like ATtiny microcontrollers. In fact, it includes an ATtiny814 onboard connected to two RGB LEDs illuminating its eyes, so you can use it as a fashionable SAO when you're not hacking. Don't have a USB C cable? As unlikely as that may be, no worries! The FPC tongue is a functional USB cable: fold the edge back to give it some tension, and stick it in your USB port! Is it a gimmick? Yes, but a functional one!

Art by makanioverlord.

Features

• CH340E USB to serial converter
• USB C connector
• FPC tongue with functional USB pads
• Onboard ATtiny814 MCU
• RGB LED eyes, with hot glue diffusers*
• Configurable UPDI voltage between 3.3V and 5V
• Powered by SAO connector or CR2032 battery (included)

Notes

• Based on Stefan Wagner's UPDI programmer.
• The tongue is durable and will not rip, though repeated use may lead to it becoming crumpled.
• v1.1 boards have been ordered. In the case issues with v0.1 (see below) have not been corrected, or other problems are introduced and cannot be resolved before DEF CON, buyers will either be able to receive a full refund or have their SAO shipped after DEF CON.
• Changes between v0.1 (pictured) and v1.1 (renders):
  • Added 0.1uF capacitors between VCC and V3 pins on CH340E and GND.
  • CH340E properly connected to power select.
  • UPDI select and power select switches routed properly (wrong pin was previously used as CG).
  • GPIO routed to SAO connector.
  • CR2032 holder footprint corrected.
  • Fuse added to FPC power connection, for safety.