

READER
- Size
- 450 × 100 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 21
- Nets
- 24
- Pads
- 84
- Tracks, vias
- 249, 6
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 11 Aug 2024
- Updated
- 1 Nov 2026
Overview
READER is an open-source printed circuit board by urichess, from the urichess/chessboard repository on GitHub, published under the Apache-2.0 licence. It is a 2-layer board of 450 × 100 mm with 21 parts on 24 nets, routed with 249 tracks and 6 vias.
It is built around the CD74HC4067M. Its parts include 17 ICs, 2 connectors, 1 capacitor and 1 resistor.
Main components
1Parts
21| Qty | Value | Footprint | References |
|---|---|---|---|
| 1 | 0.1uF | Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm | C1 |
| 1 | 10K | Resistor_THT:R_Axial_DIN0414_L11.9mm_D4.5mm_P15.24mm_Horizontal | R1 |
| 1 | CD74HC4067M | Package_SO:SOIC-24W_7.5x15.4mm_P1.27mm | U5 |
| 1 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Horizontal | J1 |
| 1 | Conn_01x05 | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Horizontal | J3 |
| 1 | HALL_SENSOR11 | Package_TO_SOT_THT:TO-92_Inline | U12 |
| 1 | HALL_SENSOR12 | Package_TO_SOT_THT:TO-92_Inline | U13 |
| 1 | HALL_SENSOR15 | Package_TO_SOT_THT:TO-92_Inline | U16 |
| 1 | HALL_SENSOR16 | Package_TO_SOT_THT:TO-92_Inline | U17 |
| 1 | HALL_SENSOR3 | Package_TO_SOT_THT:TO-92_Inline | U3 |
| 1 | HALL_SENSOR4 | Package_TO_SOT_THT:TO-92_Inline | U4 |
| 1 | HALL_SENSOR7 | Package_TO_SOT_THT:TO-92_Inline | U8 |
| 1 | HALL_SENSOR8 | Package_TO_SOT_THT:TO-92_Inline | U9 |
| 1 | HALL_SENSOR_1 | Package_TO_SOT_THT:TO-92_Inline | U1 |
| 1 | HALL_SENSOR_10 | Package_TO_SOT_THT:TO-92_Inline | U11 |
| 1 | HALL_SENSOR_13 | Package_TO_SOT_THT:TO-92_Inline | U14 |
| 1 | HALL_SENSOR_14 | Package_TO_SOT_THT:TO-92_Inline | U15 |
| 1 | HALL_SENSOR_2 | Package_TO_SOT_THT:TO-92_Inline | U2 |
| 1 | HALL_SENSOR_5 | Package_TO_SOT_THT:TO-92_Inline | U6 |
| 1 | HALL_SENSOR_6 | Package_TO_SOT_THT:TO-92_Inline | U7 |
| 1 | HALL_SENSOR_9 | Package_TO_SOT_THT:TO-92_Inline | U10 |
Questions
How big is the READER PCB?
It measures 450 × 100 mm and has 2 copper layers, 1.6 mm thick.
What parts does the READER use?
21 parts, built around the CD74HC4067M. 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 KiCad files?
From the urichess/chessboard repository on GitHub, at the commit this page was made from: the board is kicad/projects/others/READER/READER.kicad_pcb and its schematic kicad/projects/chessboard_5cm/BRAIN/BRAIN.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the READER design in my own project?
Its repository publishes it under the Apache-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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