Helios Controller USB Type C

Note: The castellated version is a test and has some cosmetic corner issues. The board still functions as intended and is being sold at a discount until this is resolved.

Helios is a rp2040 Controller with Pro Micro compatible pinout, 16MB (128Mbit) of flash, Dual ARM Cortex-M0 @133MHz, and 264kB SRAM.

Designed for use in custom mechanical (split) keyboards, but many other uses are possible.

Features

• Pro-micro / Sparkfun RP2040 compatible footprint, with 5 extra pins at bottom (Elite-C style)
• Raspberry Pi RP2040 MCU
• Default off red power LED that you can turn on via a jumper
• Blue user LED
• Level-shifter to drive 5V components.
• 16MB (128Mbit) flash memory
• Dual ARM Cortex-M0 @133MHz
• 264kB SRAM
• User LED & USB VBUS detect
• Low profile USB-C mid-mount connector
• PCB Thickness: 1mm
  

Programming

The Helios uses a single button switch and will auto enter bootloader mode out of the packaging. In order to enter bootloader mode click and hold the reset switch with a long (>500ms) click. This backwards compatibility also enables you to use reset buttons on existing keyboards for both functions.

Dimensions