2 layers46.8 × 62 mm
2 layers274 × 26.5 mm
LedMatrix
joymonkey/animatrixopen-source hardware, firmware, and software toolkit for custom LED matrix displays
- Size
- 274 × 26.5 mm
- Copper layers
- 2
- Thickness
- 0.14 mm
- Parts
- 131
- Nets
- 28
- Pads
- 293
- Tracks, vias
- 819, 35
- Pours
- 25
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 10 Sep 2026
- Updated
- 5 Nov 2026
Overview
LedMatrix is an open-source printed circuit board by joymonkey, from the joymonkey/animatrix repository on GitHub. It is a 2-layer board of 274 × 26.5 mm with 131 parts on 28 nets, routed with 819 tracks and 35 vias.
It is built around the IS31FL3731-SALS2. Its parts include 120 diodes, 5 resistors, 4 capacitors, 1 IC and 1 connector. It belongs with the lEDs and displays boards of this library.
Main components
1README
hardware/README.mdanimatrix — Hardware
This directory contains KiCad 10 design files for a custom 40×3 (120 LEDs total) flexible circuit board (FPC) using standard 3mm through-hole LEDs spaced on a 6.0 mm grid. The display is driven by a Lumissil IS31FL3731 charlieplexing driver IC (SSOP-28) over I2C with individual 8-bit PWM brightness control, powered via 5V USB VBUS, and featuring a direct-solder controller tail designed to interface with a Waveshare ESP32-S3 Zero.
Parts
131| Qty | Value | Footprint | References |
|---|---|---|---|
| 120 | Red | Library:LED_D3.0mm | D1, D10, D11, D100, D101, D102, D103, D104, D105, D106, D107, D108, D109, D110, D111, D112 +104 |
| 3 | 100nF | Capacitor_SMD:C_0805_2012Metric | C1, C3, C4 |
| 2 | 4.7k | Resistor_SMD:R_0805_2012Metric | R4, R5 |
| 1 | 100k | Resistor_SMD:R_0805_2012Metric | R2 |
| 1 | 10k | Resistor_SMD:R_0805_2012Metric | R3 |
| 1 | 10uF | Capacitor_SMD:C_0805_2012Metric | C2 |
| 1 | 20k | Resistor_SMD:R_0805_2012Metric | R1 |
| 1 | Conn_01x07 | Connector_PinHeader_2.54mm:PinHeader_1x07_P2.54mm_Vertical | J1 |
| 1 | IS31FL3731-SA | Package_SO:SSOP-28_5.3x10.2mm_P0.65mm | U1 |
Questions
How big is the LedMatrix PCB?
It measures 274 × 26.5 mm and has 2 copper layers, 0.14 mm thick.
What parts does the LedMatrix use?
131 parts, built around the IS31FL3731-SALS2. 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 LedMatrix KiCad files?
From the joymonkey/animatrix repository on GitHub, at the commit this page was made from: the board is hardware/ledMatrix.kicad_pcb and its schematic hardware/ledMatrix.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the LedMatrix design in my own project?
Its repository states no licence, so its author keeps all rights: ask joymonkey before reusing the design.
Similar boards
- 4 layers280 × 200 mm
Main Control Unit
Tuskar-Marine/hardware
All tools for the Mermaid's Rest open sailing tools
409 parts6 - 2 layers100 × 100 mm
- 2 layers55 × 40 mm
- 2 layers132 × 66.4 mm
Lighthouse display
mwuerms/lighthouse_hardware
+ lighthouse + buoy: hand sender, ble advertising
137 partsMIT - 2 layers120 × 85 mm
- 2 layers71.4 × 138.1 mm
- 4 layers120 × 90 mm
