7 open source boards using the CN3791
Real designs built with the CN3791, 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.
MiniSolarMesh
aresta
45 × 57.7 mm43 parts4LNo license7
MPPT Li-Ion CN3791 charger board
SolderedElectronics
54 × 38 mm33 parts2LTAPR-OHL-1.05
Kubisat power v2
gredzikk
80 × 80 mm77 parts2LMIT1- schematic only · 23 parts
SmartGarden
Silverlode76
23 partsMIT1 
MPPT Li-Ion CN3791 charger board panel
4.8 × 4.7 mm33 parts2LTAPR-OHL-1.05
RP2040/RP2350Kubisat main
80 × 80 mm32 parts2LMIT1
MPPT Li ion charger CN3791
54 × 38 mm32 parts2LTAPR-OHL-1.05
The CN3791 in open source designs
The gallery holds 7 open source boards using the CN3791 from 4 GitHub repositories; a typical one measures about 54 × 47.8 mm and carries around 33 components.
83% are two-layer designs, the rest use four layers or more, and 86% carry an open source license.
The most starred is MiniSolarMesh by aresta.
Parts used alongside the CN3791
Microcontrollers on boards using the CN3791
What boards using the CN3791 are built for
CN3791: common questions
Where can I find a CN3791 reference design?
Each of the 7 boards on this page is a real design using the CN3791. 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 CN3791 use?
Most are built on RP2040/RP2350 (1).
How big is a typical board using the CN3791?
The median is 54 × 47.8 mm, and 83% are two-layer designs.
What is the most popular open source board using the CN3791?
By GitHub stars, MiniSolarMesh by aresta, with 7 stars.
Can I simulate one of these boards using the CN3791 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.