RP2040-Zero The RP2040-Zero is a tiny RP2040 based controller with USB-C and 20(+9) GPIO pins.
KBD.news Published December 11, 2021
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I wasn't aware of this controller until m.ki aka @0002ozlet mentioned it in a tweet about the cool836 , a (closed source?) family of 30% keyboards with Alice like layouts.
Features of the RP2040-Zero:
RP2040 chip
USB-C
castellated pads
20 easily accessible pins
9 additional pins via solder points
dimensions: 18x23.5mm
price: $5-12
You can buy the RP2040-Zero on the original Waveshare website , and also on Aliexpress .
It's still difficult to evaluate because I only used it for one of my keyboards, but it may be good because it is easier to handle than a Raspberry Pi Pico or Pro Micro thanks to its small size – m.ki. Published on Sat 11th Dec 2021. Featured in KBD #56 (source ).
Related A new open-source controller with tiny footprint:
Epi by
u/rallekralle11 .
A
minimal controller sporting a RP2040 chip with all the 30 GPIO pins broken out – designed by
Technoblogy .
The
0xCB Helios is an Elite-C compatible development board sporting an RP2040 chip.
Fantastic-Onion4292 posted some photos of the new USB-C Pro Micro compared to the classic one.
Tiny 2040 is another RP2040-based development board, this time by
Pimoroni .
Elite-C holder PCB for Dactyl-like cases with audio jack, M4 screw holes, reset button, RGB output by
Fmcraft (
git ).
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