Isik's Tech Hedgehog CAN/USB Klipper I/O Expander, 31 Pins (Pre-Order)

Details

Out of pins on your main board? Hedgehog adds 31 I/O pins to Klipper over CAN or USB. Each pin sits on a standard 2.54 mm header with its own 3.3 V and GND pair next to it, so a switch, sensor or relay plugs in without a breadboard.

What's on the board

• STM32G0B1 MCU, built-in CAN transceiver plus USB
• 31 I/O pins on 2.54 mm headers, 3.3 V/GND beside each
• Pull-ups and protection for 3 thermistors
• 24 V input with onboard 3.3 V and 5 V regulators, 120 Ω CAN termination jumper
• Klipper with Katapult support; also runs STM32Duino

Pick your version

• Soldered: pin headers already soldered on.
• Not soldered: bare board, solder only the headers you need.

Good to know

The pins have no preset functions. You configure every one yourself in Klipper, and some SPI pins aren't supported by Klipper.

Pre-order. I'm bringing this board in from Isik's Tech in the US. Expected to ship in 3–4 weeks. As soon as it lands in the Netherlands it goes out to you, and you pay no import fees or customs on top.

Designed and assembled by Isik's Tech. Docs: https://docs.isiks.tech/hedgehog/manual/