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All setup guidesYOUR SETUP
Leonardo + USB Host Shield · Single PCRP2040 USB Host · Single PCLeonardo + serial adapter · Dual PCArduino Due · Dual PCChoose your hardwareTroubleshooting your connection
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KNIFE.BABY / HARDWARE

Choose your hardware

Step-by-step instructions
01Single-PC options02Dual-PC options
01

Single-PC options

  • Arduino Leonardo + USB Host Shield: mouse → shield; Leonardo micro-USB → gaming PC. Knife.Baby runs on the gaming PC.
  • Adafruit Feather RP2040 with USB Type A Host: mouse → built-in USB-A host; USB-C → gaming PC. Knife.Baby runs on the gaming PC.
02

Dual-PC options

  • Arduino Leonardo + compatible serial adapter: adapter USB → second PC; three crossed UART wires → Leonardo; Leonardo micro-USB → gaming PC.
  • Arduino Due: Programming port → second PC; Native port → gaming PC. No adapter or jumper wires.

In dual-PC setups, Knife.Baby runs on the second PC. The gaming PC runs the game and OBS, sending its capture through DistroAV / NDI over your wired network.

Use data-capable USB cables and check your board’s exact model. A generic RP2040 board is not the same as the Feather USB Host model described in the guide. Hardware is purchased separately.

Choose the matching setup guide for flashing, connections and troubleshooting.

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