8 open source boards using the ESP8266EX
Real designs built with the ESP8266EX, from public GitHub projects: a quick way to see how others power, decouple and connect it. Each board comes with its KiCad files, full parts list and a render — and you can simulate its firmware on HardLabs.
ESP8266ME-ESP8266
MaloufSleep
66.8 × 34 mm73 parts2LMIT204
ESP8266Enlightened-Otter
Jana-Marie
100 × 100 mm171 parts2LGPL-3.035
ESP8266Motherboard
KhazAkar
127 × 46 mm108 partsMIT4
ESP8266Neatboard esp8266
galjonsfigur
28 × 34.2 mm49 parts2LMIT1
STM32Flight-Controller-Design-2025
sthabisoslushaba
70 × 72.5 mm35 parts2LNo license0- schematic only · 72 partsESP32
Kicad
goog-yaml
72 parts2LNo license0 
ESP8266ESP8266 Wireless DAP
ZhuYanzhen1
40 × 20 mm39 parts2LAGPL-3.057
RP2040/RP2350Panel
zeankundev
90 × 65 mm72 parts4LNo license1
The ESP8266EX in open source designs
The gallery holds 8 open source boards using the ESP8266EX from 8 GitHub repositories; a typical one measures about 70 × 46 mm and carries around 72 components.
86% are two-layer designs, the rest use four layers or more, and 63% carry an open source license.
The most starred is ME-ESP8266 by MaloufSleep.
Microcontrollers on boards using the ESP8266EX
What boards using the ESP8266EX are built for
ESP8266EX: common questions
Where can I find a ESP8266EX reference design?
Each of the 8 boards on this page is a real design using the ESP8266EX. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.
Which microcontrollers do boards using the ESP8266EX use?
Most are built on ESP8266 (5), ESP32 (1), RP2040/RP2350 (1) and STM32 (1).
How big is a typical board using the ESP8266EX?
The median is 70 × 46 mm, and 86% are two-layer designs.
What is the most popular open source board using the ESP8266EX?
By GitHub stars, ME-ESP8266 by MaloufSleep, with 204 stars.
Can I simulate one of these boards using the ESP8266EX before building it?
Yes. HardLabs turns a board's netlist and BOM into a working simulation, so you can boot and test firmware against it with no hardware on your desk.