2 open source boards using the 3.3vReg
Real designs built with the 3.3vReg, 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.
Ch32v307gigabit
cnlohr
90 × 60 mm83 parts2LMIT105
ESP32RBO128128G-610-LCD
27.5 × 35 mm36 parts2LMIT105
The 3.3vReg in open source designs
The gallery holds 2 open source boards using the 3.3vReg from 1 GitHub repository; a typical one measures about 58.8 × 47.5 mm and carries around 60 components.
100% are two-layer designs, the rest use four layers or more, and 100% carry an open source license.
The most starred is Ch32v307gigabit by cnlohr.
Microcontrollers on boards using the 3.3vReg
What boards using the 3.3vReg are built for
3.3vReg: common questions
Where can I find a 3.3vReg reference design?
Each of the 2 boards on this page is a real design using the 3.3vReg. 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 3.3vReg use?
Most are built on ESP32 (1).
How big is a typical board using the 3.3vReg?
The median is 58.8 × 47.5 mm, and 100% are two-layer designs.
What is the most popular open source board using the 3.3vReg?
By GitHub stars, Ch32v307gigabit by cnlohr, with 105 stars.
Can I simulate one of these boards using the 3.3vReg 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.