2 open source boards using the EFM8BB21F16G-C-QFN20
Real designs built with the EFM8BB21F16G-C-QFN20, 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.
RP2040/RP2350Bee core v01-kicad9-bringup
TheronRogers
80 × 60 mm65 parts4LNo license0
RP2040/RP2350Bee core v01-kicad9-bringup stitched
80 × 60 mm65 parts4LNo license0
The EFM8BB21F16G-C-QFN20 in open source designs
The gallery holds 2 open source boards using the EFM8BB21F16G-C-QFN20 from 1 GitHub repository; a typical one measures about 80 × 60 mm and carries around 65 components.
100% use four copper layers or more, and 0% carry an open source license.
The most starred is Bee core v01-kicad9-bringup stitched by TheronRogers.
Microcontrollers on boards using the EFM8BB21F16G-C-QFN20
EFM8BB21F16G-C-QFN20: common questions
Where can I find a EFM8BB21F16G-C-QFN20 reference design?
Each of the 2 boards on this page is a real design using the EFM8BB21F16G-C-QFN20. 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 EFM8BB21F16G-C-QFN20 use?
Most are built on RP2040/RP2350 (2).
How big is a typical board using the EFM8BB21F16G-C-QFN20?
The median is 80 × 60 mm, and 0% are two-layer designs.
What is the most popular open source board using the EFM8BB21F16G-C-QFN20?
By GitHub stars, Bee core v01-kicad9-bringup stitched by TheronRogers, with 0 stars.
Can I simulate one of these boards using the EFM8BB21F16G-C-QFN20 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.