Glyph

Glyph is a NFC PCB card but with an e-ink screen and 3 Cherry MX switches, it includes a Seeed Studio XIAO nRF52840 which runs on a 200 mAH battery! The epaper is used for cycling thorugh different screens such as an about me, interests, Projects and much more!

Why?

This is a device that will help me standout at events such as networking, college fairs, and job fairs. Also the idea of having an e-ink display and three cherry MX switches on a NFC card sounds super cool too.

Parts!

• Uses a Seeed Studio XIAO nRF52840, using it's charging module!
• Seeed Studio epaper breakout board, breakout board with a 24 pin connector for the epaper display
• Seeed Studio 2.13" epaper display, neat little epaper display
• Three *Cherry MX switches!

Hardware

want to work on this? head to /hardware

• Refer to the BOM here
• Download the PCB Project file here
• Order the PCB and parts using the Gerber Files, BOM and Pick&Place (Refer here)
• Solder all the components according to the schematic!
• Download CircuitPython for Seeed Studio XIAO nRF52840
• Hold the BOOT button and plug in the MCU
• It should appear as a CIRCUITPY drive
• Download the firmware
• Copy all the file to the CIRCUITPY drive
• and, you're done!

Schematic

PCB

View the 3D PCB on OnShape here!

Firmware

└── /
    ├── buttons/
    │   ├── buttons.py
    ├── display/
    │   ├── display_manager.py
    ├── models/
    │   ├── project.py
    ├── ui/
    │   ├── pages.py
    │   ├── renderer.py
    │   ├── ui.py
    ├── nfc/
    │   ├── ndef.py
    │   ├── nfc_manager.py
    │   ├── st25dv.py
    ├── battery.py
    ├── code.py
    ├── config.py

BOM

S. No	Part	Link	Qty.	Price
1	E-Ink Display	Link	1 Piece	$6.50
2	Connecter - 24 pin	Link	1 Pieces	$3.99
3	NFC Chip	Link	1 Piece	$1.24
4	200 mAH 3.7V Lipo Battery	Link	1 Piece	$18
5	Seeed Studio Xiao nRF52840	Link	1 Piece	$9.90
6	PCB(from JLCPCB)		5 Pieces	$58.41
	Total			$98.14

Zine

Thank you HackClub!