4 layers120 × 88 mm ILM139C panel 4x4, the printed circuit board in 3D

ILM139C panel 4x4

Size: 120 × 88 mm
Copper layers: 4
Thickness: 0.79 mm
Parts: 1,986
Nets: 49
Pads: 8,898
Tracks, vias: 20,192, 5,136
Pours: 16
Routed: Yes
KiCad: KiCad 9.0 (file 20241229)
Created: 18 Apr 2025
Updated: 18 Jul 2025

Overview

ILM139C panel 4x4 is an open-source printed circuit board by EDrTech, from the EDrTech/ILM139C repository on GitHub, published under the CERN-OHL-P-2.0 licence. It is a 4-layer board of 120 × 88 mm with 1,986 parts on 49 nets, routed with 20,192 tracks and 5,136 vias.

It is built around the XL-B1010RGBT-HF and AXE640124D. Its parts include 1,872 ICs and 32 connectors. It belongs with the lEDs and displays boards of this library.

Main components

README

README.md

Banner Banner

_{Quick access}

[!WARNING]

This project is currently under active development. It is experimental, and may not function as intended. The source files might not exactly match tested hardware if you can see this message. Use at your own risk.

Illumicro ILM139C 13x9 RGB LED matrix

ILM139C Is an RGB LED module with a matrix of 13x9 RGB LEDs. It is based on the IS31FL3741A LED matrix driver, which provides an i2c interface for full control of individual LEDs which is accessible with a standard QWIIC connector. QWIIC Connector allows for up to 4 modules to be connected together on a single i2c bus. Small form factor of 26mm*18mm and 2mm pitch of LEDs allows for creating small high density and high brightness displays.

https://github.com/user-attachments/assets/0ada246c-68c4-4b34-9f10-4a2aee3bf7c3

Features

Very small footprint of 26mm*18mm
13x9 RBG LED matrix
1mm*1mm LEDs, with 2mm pitch
IS31FL3741A Driver
2.7V~5.5V Operating voltage
QWIIC Connector
Selectable i2c address
Removable driver/matrix boards
Separate power supply connector

ILM139C Module pinout

Installation and set up

Connect QWIIC cable to one of the available connectors on the bottom of the module. If you want to power the module over QWIIC, the jumper resistor should be soldered on the bottom of the module. If the jumper is present, DO NOT connect external power supply as it will short to 3.3V of the QWIIC! The module can be programmed over i2c, a library is currently under development to allow straightforward integration with and i2c capable device.

illumicro Series

Category and platform

LEDs and displays

Project files

Show this board on your page

https://pcbkit.io/boards/EDrTech/ILM139C

The board's own page, for a message or a post.

Source

Repository: EDrTech/ILM139C
Board file: pcb_src/v1.0.0/ILM139C_matrix/prod/ILM139C_panel_4x4.kicad_pcb
Commit: b0d510f
Licence: CERN-OHL-P-2.0

Parts

1,986

Qty	Value	Footprint	References
1872	XL-B1010RGBT-HF	easyeda2kicad:LED-SMD_4P-L1.0-W1.0-TR_1	U10, U10, U10, U10, U10, U10, U10, U10, U10, U10, U10, U10, U10, U10, U10, U10 +1856
32	AXE640124D	easyeda2kicad:CONN-SMD_40P-P0.40_OK-14GM040-04	CN3, CN3, CN3, CN3, CN3, CN3, CN3, CN3, CN3, CN3, CN3, CN3, CN3, CN3, CN3, CN3 +16
16	G***	kibuzzard-68775C53	kibuzzard-68775C53, kibuzzard-68775C53, kibuzzard-68775C53, kibuzzard-68775C53, kibuzzard-68775C53, kibuzzard-68775C53, kibuzzard-68775C53, kibuzzard-68775C53, kibuzzard-68775C53, kibuzzard-68775C53, kibuzzard-68775C53, kibuzzard-68775C53, kibuzzard-68775C53, kibuzzard-68775C53, kibuzzard-68775C53, kibuzzard-68775C53
16	LOGO	Soldered graphics:Logo-Back-OSH-3.5mm	G*, G, G, G, G, G, G, G, G, G, G, G, G, G, G, G*
16	LOGO	Soldered graphics:Logo-Back-SolderedFULL-9mm	G*, G, G, G, G, G, G, G, G, G, G, G, G, G, G, G*
16	LOGO	LOGO	G*, G, G, G, G, G, G, G, G, G, G, G, G, G, G, G*

The 1,968 most common of 1,986 parts.

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Questions

How big is the ILM139C panel 4x4 PCB?

It measures 120 × 88 mm and has 4 copper layers, 0.79 mm thick.

What parts does the ILM139C panel 4x4 use?

1,986 parts, built around the XL-B1010RGBT-HF and AXE640124D. 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 ILM139C panel 4x4 KiCad files?

From the EDrTech/ILM139C repository on GitHub, at the commit this page was made from: the board is pcb_src/v1.0.0/ILM139C_matrix/prod/ILM139C_panel_4x4.kicad_pcb and its schematic pcb_src/v1.0.0/ILM139C_driver/ILM139C.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the ILM139C panel 4x4 design in my own project?

Its repository publishes it under the CERN-OHL-P-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).