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Add PID 1209:C552 for CH552 USB Foot Pedal #1363

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Add PID 1209:C552 for CH552 USB Foot Pedal #1363

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15 changes: 15 additions & 0 deletions 1209/C552/index.md
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---
layout: pid
title: CH552 USB Foot Pedal
owner: zjm54321
license: GPL-3.0-or-later (firmware), CERN-OHL-S-2.0 (hardware)
site: https://github.com/zjm54321/ch552-pedal
source: https://github.com/zjm54321/ch552-pedal
---
Single-switch USB foot pedal based on the WCH CH552G (8051) microcontroller.
It enumerates as a standard USB HID keyboard plus a VIA-compatible Raw HID
interface (usage page 0xFF60) for browser-based remapping of plain keys and
modifier chords; mappings persist in the chip's DataFlash. Each unit reports a
USB serial number derived from the chip's unique ID so that multiple pedals can
be connected and configured independently. Firmware is written in C for SDCC,
reusing the CH55xduino USB stack; the PCB is designed in KiCad.
6 changes: 6 additions & 0 deletions org/zjm54321/index.md
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---
layout: org
title: zjm54321
site: https://github.com/zjm54321
---
Individual maker building small open-source USB input devices.
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