7 open source boards using the R-78B3.3-2.0
Real designs built with the R-78B3.3-2.0, 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.
STM32Td deflect
tdaede
174 × 104 mm165 parts4LNo license370
NXPMain Board 2023
LesKaribous
60 × 150 mm67 parts2LMIT3
ESP32CAN4VSCP Frankfurt Eth.
grodansparadis
42.1 × 72 mm71 parts4LCERN-OHL-1.22
NXPMain Board 2023
100 × 100 mm61 parts2LMIT1
ESP32Vscp din wireless esp32-flat
42 × 72 mm20 parts2LMIT1
NXPMain Board 2025
56 × 151 mm59 parts2LMIT1
TI MSP430/CCJarduino2
bpmine
93 × 89 mm52 parts2LNo license0
The R-78B3.3-2.0 in open source designs
The gallery holds 7 open source boards using the R-78B3.3-2.0 from 6 GitHub repositories; a typical one measures about 60 × 100 mm and carries around 61 components.
71% are two-layer designs, the rest use four layers or more, and 71% carry an open source license.
The most starred is Td deflect by tdaede.
Parts used alongside the R-78B3.3-2.0
Microcontrollers on boards using the R-78B3.3-2.0
What boards using the R-78B3.3-2.0 are built for
R-78B3.3-2.0: common questions
Where can I find a R-78B3.3-2.0 reference design?
Each of the 7 boards on this page is a real design using the R-78B3.3-2.0. 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 R-78B3.3-2.0 use?
Most are built on NXP (3), ESP32 (2), STM32 (1) and TI MSP430/CC (1).
How big is a typical board using the R-78B3.3-2.0?
The median is 60 × 100 mm, and 71% are two-layer designs.
What is the most popular open source board using the R-78B3.3-2.0?
By GitHub stars, Td deflect by tdaede, with 370 stars.
Can I simulate one of these boards using the R-78B3.3-2.0 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.