Hardware projects tagged samd21

Open hardware projects tagged samd21 on BoardRepo. View schematics and PCBs in the browser and download the sources.

Projects

16 boards
MeowMeow
@electroniccats

Using the Meow Meow you can make anything into a key just by connecting a few alligator clips

schematicpcbbomUSB-CswitchUSBresistor
No license24 stars0 commentsOct 1, 2026
Bast-Pro-Mini-M0
@electroniccats

Bast Pro Mini M0 Dev Board for SAMD21E18A

pcbbom
No license3 stars0 commentsOct 1, 2026
atsamd20-breakout
@elevendroids

SAM D20 / SAM D21 Breakout Board

schematicpcbbomSAMDswitchcrystalresistor
No license1 star0 commentsOct 1, 2026
CatWAN_Relay
@electroniccats

A board for relay control with LoRa compatible with LoRaWAN

schematicpcbbomSAMDUSBswitchrelay
No license7 stars0 commentsOct 1, 2026
mux_board_v5
@charkster

Custom PCB with SAMD21 QT PY controlling TWO ADG1606BRUZ 16 input muxes! This board is 30% smaller than V3 and uses a single 16x2 pin header.

schematicpcbbomconnectorIC
No license1 star0 commentsOct 1, 2026
mux_board_v3
@charkster

Custom PCB with SAMD21 QT PY controlling TWO ADG1606BRUZ 16 input muxes!

schematicpcbbomconnectorIC
No license1 star0 commentsOct 1, 2026
CatWAN_Farmer
@electroniccats

CatWAN Farmer, a grower's water saving open source project with LoRa

pcbbom
No license7 stars0 commentsOct 1, 2026
SAMD21-breakout
@atoomnetmarc

SAMD21 breakout board, layout inspired by Arduino MKR Zero.

schematicpcbbomgerbersSAMDUSBswitchregulator
No license2 stars0 commentsSep 30, 2026
CatSatZero
@electroniccats

Kit CatSat Zero

pcbbom
No license15 stars0 commentsSep 30, 2026
catwan_citizen
@electroniccats

CatWAN Citizen for the Urban Sensor Board

schematicpcbbomSAMDUSBswitchregulator
AGPL-3.03 stars0 commentsSep 17, 2026
iot12
@atoomnetmarc

Schematic, PCB files, firmware and 3d models for creating the IoT12 solder iron temperature controller for T12 compatible tips.

schematicpcbbomESP32SAMDswitchregulator
Apache-2.014 stars0 commentsSep 17, 2026
wifi-gate-controller
@mikelawrence

WiFi enabled Gate Controller Addon to US Automatic Gate Opener

pcbbomSAMDresistorcapacitorinductor
MIT8 stars0 commentsSep 5, 2026
escornabot-makech
@electroniccats

Escornabot Makech is an open source/hardware project that aims to bring robotics and programming to children.

pcbbom
AGPL-3.02 stars0 commentsSep 5, 2026
wifi-septic-controller
@mikelawrence

WiFi enabled Septic Controller

pcbbomSAMDpotentiometerresistorcapacitor
MIT8 stars0 commentsSep 5, 2026
lyft
@mgkoenig

LYFT is a sophisticated remote control for your IKEA BEKANT desk.

pcbbom
GPL-3.082 stars0 commentsSep 5, 2026
c128-keyboard
@ytmytm

Allow a modern USB keyboard to be used with a Commodore 128 in place of the original keyboard.

schematicpcbbomresistorcapacitorconnectormounting hole
GPL-3.020 stars0 commentsJul 9, 2026

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