2 layers60 × 30 mm
Controller
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
11 parts3kApache-2.0
2 layers60 × 46 mm
Reader r2
amnonliu/Spool_ReaderExperimental DIY RFID spool reader designed for Bambu Lab H2C printers. Maps spool tags to filament profiles and sends saved settings over the local network. Includes firmware, PCB designs and a printable enclosure.
- Size
- 60 × 46 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 11
- Nets
- 18
- Pads
- 44
- Tracks, vias
- 55, 7
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 25 Oct 2026
- Updated
- 25 Oct 2026
Overview
Reader r2 is an open-source printed circuit board by amnonliu, from the amnonliu/Spool_Reader repository on GitHub. It is a 2-layer board of 60 × 46 mm with 11 parts on 18 nets, routed with 55 tracks and 7 vias.
Its parts include 4 connectors, 3 capacitors and 1 switch.
README
README.mdSpool_Reader
Experimental DIY RFID spool reader designed for Bambu Lab H2C printers. Maps spool tags to filament profiles and sends saved settings over the local network. Includes firmware, PCB designs and a printable enclosure.
Parts
11| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | M2.5 nylon | MountingHole:MountingHole_2.7mm_M2.5 | H1, H2, H3 |
| 2 | 100nF | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P2.50mm | C2, C3 |
| 1 | 10uF 16V | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C1 |
| 1 | OLED 3V3 | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical | J4 |
| 1 | PN5180 | Connector_PinSocket_2.54mm:PinSocket_1x13_P2.54mm_Vertical | J3 |
| 1 | READ | Reader:SW_PUSH_6mm_H9.5mm | SW1 |
| 1 | XIAO left D0-D6 | Connector_PinSocket_2.54mm:PinSocket_1x07_P2.54mm_Vertical | J1 |
| 1 | XIAO right 5V-D7 | Connector_PinSocket_2.54mm:PinSocket_1x07_P2.54mm_Vertical | J2 |
Questions
How big is the Reader r2 PCB?
It measures 60 × 46 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Reader r2 use?
11 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Reader r2 KiCad files?
From the amnonliu/Spool_Reader repository on GitHub, at the commit this page was made from: the board is spool-reader/hardware/kicad/reader-r2.kicad_pcb and its schematic spool-reader/hardware/kicad/reader-r2.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Reader r2 design in my own project?
Its repository states no licence, so its author keeps all rights: ask amnonliu before reusing the design.
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