
SAMD21E18 LilyPad Sticker: Enjoy Hack Club
Hugoyhu/Hack-Club-Sticker-Development-Boards
"Sticker" dev boards.

Corgi "keychain" LilyPad with ATSAMD21E18
SAMD21E18 LilyPad Sticker: Corgi is an open-source printed circuit board by Hugoyhu, from the Hugoyhu/corgikeychain repository on GitHub. It is a 2-layer board of 107.9 × 111.3 mm with 30 parts on 38 nets, routed with 183 tracks and 30 vias.
It is built around the ATSAMD21E18A-AF, AP2112K-3.3 and NSR0320MW2, with the WS2812B among its other parts. Its parts include 17 connectors, 4 capacitors, 2 resistors, 2 ICs and 2 diodes. It belongs with the SAM D and SAM boards of this library.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 15 | Conn_01x01_Female | SparkFun_LilyPad_Main_Board_v21:PETAL-LONG-1-2SIDE | J1, J2, J3, J4, J5, J6, J7, J8, J9, J10, J11, J12, J13, J14, J17 |
| 2 | 10uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2, C3 |
| 2 | 1uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C4 |
| 2 | 5.1K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2 |
| 2 | TestPoint | TestPoint:TestPoint_Pad_2.0x2.0mm | TP1, TP2 |
| 1 | AP2112K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U2 |
| 1 | ATSAMD21E18A-A | Package_QFP:TQFP-32_7x7mm_P0.8mm | U1 |
| 1 | Conn_01x04_Female | Connector_JST:JST_SH_BM04B-SRSS-TB_1x04-1MP_P1.00mm_Vertical | J16 |
| 1 | NSR0320 | Diode_SMD:D_SOD-323_HandSoldering | D1 |
| 1 | SW_Push | Button_Switch_SMD:SW_SPST_B3U-3000P | SW1 |
| 1 | USB_C_Receptacle_USB2.0 | USB-THT-IO:GCT_USB4085-GF-A_REVA | J15 |
| 1 | WS2812B | LED_SMD:LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | D2 |

Hugoyhu/Hack-Club-Sticker-Development-Boards
"Sticker" dev boards.

h7ga40/RP2040_Logicool_K275_PCB
Replace PCB of Logitech K275 keyboard with RP2040

upbeatcarri/eclair
Pocket device for taking quick notes, acting as a USB keyboard for PC sync etc., with custom apps samd21, tinygo


mitsake/rng-pcb
A hardware random number generator that uses avalanche noise. Based on the Trinket M0.

electricui/electricui-helloboard
Cute arduino compatible development board for introducing people to Electric UI


It measures 107.9 × 111.3 mm and has 2 copper layers, 1.6 mm thick.
30 parts, built around the ATSAMD21E18A-AF, AP2112K-3.3, NSR0320MW2 and WS2812B. 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.
From the Hugoyhu/corgikeychain repository on GitHub, at the commit this page was made from: the board is SAMD21E18 LilyPad Sticker: Corgi.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask Hugoyhu before reusing the design.