7 open source boards using the 8051
Real designs built with the 8051, 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.
St251n 20603
schlae
137.4 × 199.1 mm277 parts4LNo license38
PICPIC DEV BOARD
anshukumar146
140.7 × 128.5 mm102 parts4LNo license1
St296n 20741
137.4 × 199.1 mm269 parts4LNo license38
ESP32ESP32 4Layer
39.9 × 58.5 mm34 parts4LNo license1
ESP32ESP32 Weather Station
79.6 × 59.9 mm34 parts2LNo license1
St225 20427
136.8 × 199.1 mm212 parts2LNo license38
8051 Standalone Dev Board
54.6 × 52.3 mm24 parts2LNo license1
The 8051 in open source designs
The gallery holds 7 open source boards using the 8051 from 2 GitHub repositories; a typical one measures about 136.8 × 128.5 mm and carries around 102 components.
57% use four copper layers or more, and 0% carry an open source license.
The most starred is St251n 20603 by schlae.
What boards using the 8051 are built for
8051: common questions
Where can I find a 8051 reference design?
Each of the 7 boards on this page is a real design using the 8051. 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 8051 use?
Most are built on ESP32 (2) and PIC (1).
How big is a typical board using the 8051?
The median is 136.8 × 128.5 mm, and 43% are two-layer designs.
What is the most popular open source board using the 8051?
By GitHub stars, St251n 20603 by schlae, with 38 stars.
Can I simulate one of these boards using the 8051 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.