2 layers50 × 24.5 mm DimLED, the printed circuit board in 3D

DimLED

⚡ ESP-01 based smart LED dimmer powered by ESPHome

Size: 50 × 24.5 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 16
Nets: 11
Pads: 48
Tracks, vias: 95, 53
Pours: 8
Routed: Yes
KiCad: KiCad 9.0 (file 20241229)
Created: 6 Jan 2026
Updated: 2 Sep 2026

Overview

DimLED is an open-source printed circuit board by tqlabs-in, from the tqlabs-in/dimled-mini repository on GitHub, published under the MIT licence. It is a 2-layer board of 50 × 24.5 mm with 16 parts on 11 nets, routed with 95 tracks and 53 vias.

It is built around the ESP-01, IRF540N and MMBT2222A. Its parts include 5 resistors, 4 connectors, 2 capacitors, 2 ICs and 2 transistors. It belongs with the home automation and IoT and lEDs and displays boards and the ESP8266 boards of this library.

Main components

README

README.md

Open Source PWM LED Dimmer powered by ESPHome

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Parts

Qty	Value	Footprint	References
2	10k	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R1, R2
2	1k	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R4, R5
2	Screw_Terminal_01x02	TerminalBlock:TerminalBlock_bornier-2_P5.08mm	J1, J2
1	1000u/16v	Capacitor_THT:CP_Radial_D8.0mm_P3.50mm	C1
1	100n	Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C2
1	1k	Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P2.54mm_Vertical	R3
1	Conn_01x03	Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical	J4
1	Conn_01x04_Pin	Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical	J3
1	ESP-01	DimLED:ESP-01_With_Headers	U2
1	IRF540N	Package_TO_SOT_THT:TO-220-3_Vertical	Q1
1	MMBT2222A	Package_TO_SOT_SMD:SOT-23	Q2
1	MP1584 Module	DimLED:MP1584-Module_22.1x16.8mm_THT	U1
1	MountingHole	MountingHole:ToolingHole_1.152mm	H1

Questions

How big is the DimLED PCB?

It measures 50 × 24.5 mm and has 2 copper layers, 1.6 mm thick.

What parts does the DimLED use?

16 parts, built around the ESP-01, IRF540N and MMBT2222A. 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 DimLED KiCad files?

From the tqlabs-in/dimled-mini repository on GitHub, at the commit this page was made from: the board is pcb/DimLED.kicad_pcb and its schematic pcb/DimLED.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the DimLED design in my own project?

Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

Category and platform

Home automation and IoT LEDs and displays ESP8266

Topics

dimmer esp8266 pwm esphome home-automation iot smart-lighting

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/tqlabs-in-dimled-mini" title="DimLED in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/tqlabs-in-dimled-mini.jpg" alt="DimLED" width="1200" height="900">

A picture that opens the board, for a README

[![DimLED](https://pcbkit.io/embed/boards/tqlabs-in-dimled-mini.jpg?size=s)](https://pcbkit.io/boards/tqlabs-in-dimled-mini)

Source

Repository: tqlabs-in/dimled-mini
Board file: pcb/DimLED.kicad_pcb
Commit: 4f2dd1d
Licence: MIT

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