4 layers47 × 106 mm
2 layers86.5 × 23 mm
Samd21
Mee42/threeboard6A keyboard with 3 keys
- Size
- 86.5 × 23 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 13
- Nets
- 34
- Pads
- 85
- Tracks, vias
- 124, 4
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 3 Jul 2021
- Updated
- 26 Nov 2021
Overview
Samd21 is an open-source printed circuit board by Mee42, from the Mee42/threeboard repository on GitHub. It is a 2-layer board of 86.5 × 23 mm with 13 parts on 34 nets, routed with 124 tracks and 4 vias.
It is built around the ATSAMD21E17A-AU. Its parts include 3 capacitors, 2 ICs, 1 resistor, 1 diode and 1 connector. It belongs with the SAM D and SAM boards of this library.
Main components
1README
README.mdThreeboard
The v1 threeboard has been fully assembled and firmware is currently in developement.
Firmware is in the code/ directory and is written in C.
KiCad instructions
PCB files are in the pcb/ directory. Threeboard is designed on an ATSAMD21E17A arm microcontroller. A v2 board is in development
Both random parts and mx switch footprint are dependencies for the kicad files.
Parts
13| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 1uF | Capacitor_SMD:C_0805_2012Metric | C1, C2, C3 |
| 3 | MX-NoLED | MX_Alps_Hybrid:MX-1U-NoLED | MX1, MX2, MX3 |
| 1 | 1.5K | Resistor_SMD:R_0805_2012Metric | R1 |
| 1 | ATSAMD21E17A-A | Package_QFP:TQFP-32_7x7mm_P0.8mm | U2 |
| 1 | Conn_01x04_Male | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical | J1 |
| 1 | Molex-0548190589 | random_parts2:Molex-0548190589 | USB1 |
| 1 | SW_Push | random_parts2:SKQG-1155865 | SW1 |
| 1 | TLV70033_SOT23-5 | Package_TO_SOT_SMD:SOT-23-5 | U1 |
| 1 | red LED | LED_SMD:LED_0805_2012Metric | D1 |
Questions
How big is the Samd21 PCB?
It measures 86.5 × 23 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Samd21 use?
13 parts, built around the ATSAMD21E17A-AU. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Samd21 KiCad files?
From the Mee42/threeboard repository on GitHub, at the commit this page was made from: the board is pcb/samd21/samd21.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Samd21 design in my own project?
Its repository states no licence, so its author keeps all rights: ask Mee42 before reusing the design.
Similar boards
- 2 layers75 × 50 mm
- 2 layers40 × 20 mm
- 2 layers74.9 × 49.5 mm
- 2 layers35 × 29 mm
MagSpoofTC
samyk/magspoof
A portable device that can spoof/emulate any magnetic stripe, credit card or hotel card "wirelessly", even on standard magstripe (non-NFC/RFID) readers.
13 parts4.2k - 2 layers20.6 × 23.6 mm
AO-03 signal amplifier
fossasia/pslab-scripts
Pocket Science Lab - Scripts for Sensor Experiments
13 parts1.6kApache-2.0 - 2 layers47 × 35.6 mm
- 2 layers95 × 95 mm
Cube batteryboard
willem-pennings/balancing-cube
A cube that balances itself in a corner or edge using reaction wheels
13 parts1.1kGPL-3.0