5 open source boards using the CH340B
Real designs built with the CH340B, 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.
ESP32KRAKE
PubInv
137.2 × 83.8 mm195 parts2LAGPL-3.09
AVR/ArduinoDesklamp
brainsmoke
96 × 96 mm41 parts2LNo license1
ESP8266FanControl
bakadave
72.8 × 38 mm81 parts2LNo license0
NXPNuclone LPC845M301BD48 small
Squantor
50 × 50 mm67 parts2LMIT1
Nuclone devboard medium 2 layer USB-C UART
50 × 76.2 mm45 parts2LMIT24
The CH340B in open source designs
The gallery holds 5 open source boards using the CH340B from 5 GitHub repositories; a typical one measures about 72.8 × 76.2 mm and carries around 67 components.
100% are two-layer designs, the rest use four layers or more, and 60% carry an open source license.
The most starred is Nuclone devboard medium 2 layer USB-C UART by Squantor.
Parts used alongside the CH340B
Microcontrollers on boards using the CH340B
What boards using the CH340B are built for
CH340B: common questions
Where can I find a CH340B reference design?
Each of the 5 boards on this page is a real design using the CH340B. 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 CH340B use?
Most are built on AVR/Arduino (1), ESP32 (1), ESP8266 (1) and NXP (1).
How big is a typical board using the CH340B?
The median is 72.8 × 76.2 mm, and 100% are two-layer designs.
What is the most popular open source board using the CH340B?
By GitHub stars, Nuclone devboard medium 2 layer USB-C UART by Squantor, with 24 stars.
Can I simulate one of these boards using the CH340B 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.