2 layers50.5 × 83 mm
Pixelpine
machmar/pixelpine
PixelPine: a 7 cm PCB Christmas tree with 240 charlieplexed LEDs and a personality (KiCad, simulator, firmware sizing, docs)
271 parts
2 layers85.6 × 54 mm
PCB Business Card
Sealflux/PCB_Business_CardA business card that lights up when you tap it with your phone. No battery. It just steals power from the phone's NFC radio.
- Size
- 85.6 × 54 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 17
- Nets
- 12
- Pads
- 31
- Tracks, vias
- 102, 6
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 17 Jul 2026
- Updated
- 14 Aug 2026
Overview
PCB Business Card is an open-source printed circuit board by Sealflux, from the Sealflux/PCB_Business_Card repository on GitHub, published under the MIT licence. It is a 2-layer board of 85.6 × 54 mm with 17 parts on 12 nets, routed with 102 tracks and 6 vias.
It is built around the XL-1608WWC-06, NT3H1101W0FHKH and FRC0603F2200TS, with the RC0603JR-070RL among its other parts. Its parts include 6 resistors, 5 ICs and 1 capacitor. It belongs with the radio and wireless and power boards of this library.
Main components
4
XL-1608WWC-06
0603-40℃~+85℃ 130° 20mA 2500K~3000K 3.3V 70mW 780mcd Discrete Diode Top-mount Warm White Yellow Lens 0603 LED Indication - Discrete ROHSXINGLIGHTLED Indication - Discrete
NT3H1101W0FHKH
XQFN-8(1.6x1.6)1.7V~3.6V 13.56MHz I2C ISO 14443 XQFN-8(1.6x1.6) RFID ICs ROHSNXP SemiconductorsRFID ICs
FRC0603F2200TS
0603-55℃~+155℃ 100mW 220Ω 75V Thick Film Resistor ±1% ±100ppm/℃ 0603 Chip Resistor - Surface Mount ROHSFOJANChip Resistor - Surface Mount
RC0603JR-070RL
UncategorisedUnknown maker
README
README.mdNFC Business Card - PCB
A business card that lights up when you tap it with your phone. No battery. It just steals power from the phone's NFC radio.
Built for Horizons Polaris Hack Club
Features
-
Energy Siphoning: It harvests power directly from your phone's NFC field.
-
Open Sourced: Change the copper layers and mask to add whatever text or logo you want.
-
LEDs: 4 LEDs light up faintly when you tap the card (Whoa cool lights!)
-
NFC: Uses the NXP NT3H1101 chip. Just tap and it sends your info.
Hardware
-
Size: Standard credit card (85.6mm x 54mm). yes I had to google how big a credit card is... Two layers (duh its not gonna be six layers)
-
NFC Chip: NXP NT3H1101W0FHKH (XQFN-8). (basically small ahh chip)
-
Antenna: Copper traces in a loop, idk how many loops matter but I did a couple.
-
Harvesting: 220nF capacitor to store the tiny bit of power the phone gives off.
-
LEDs: 4x low forward voltage warm white LEDs (0603). (low power needed LEDs)
-
Resistors: 4x 220Ω current limiters + 2x 0Ω jumpers (all 0603).
-
PCB Finish: Black soldermask + ENIG gold finish. The black paint covers the board, and the text/QR code is exposed copper plated in gold so it pops.
Bill of Materials (BOM)
| Designator | Value / Description | LCSC Part # |
|---|---|---|
| U1 | NT3H1101W0FHKH NFC IC (XQFN-8) | C73156 |
| R6, R5 | 0Ω Zero-ohm Jumpers (0603) | C95177 |
| C1 | 220nF Capacitor (0603) | C64705 |
| U2, U3, U4, U5 | Low VF Warm White LEDs (0603) | C965810 |
| R1, R2, R3, R4 | 220Ω Resistors (0603) | C2907014 |
| Costs are dependent on shipping location! |
Steps to Reproduce
If you want to customize/change the design of the PCB, download the files in the PCB folder and open in KiCad and change them! For manufacturing, download the gerbers.zip in the Production Folder and give them to the corresponding PCB manufacturer(JLCPCB) After you receive your PCBs, read below!
Firmware / Programming
It doesn't run code. The chip just stores a URL that your phone reads. Here’s how to set it:
-
Download "NFC Tools" on your phone (iOS or Android). We all love downloading an app for one specific thing!
-
Tap the card to your phone. (Put your phone to the contactless symbol! That's why I put it there as a silkscreen).
-
Open the app, go to Write > Add a record > URL.
-
Paste your link (GitHub, LinkedIn, whatever).
-
Hit Write and tap the card again.
-
Gain massive amounts of aura for having a PCB as your business card (Patrick Bateman who??)
Schematic
PCB
Front:
Black soldermask + ENIG gold finish
Back:
Black soldermask + ENIG gold finish
Parts
17| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | LOGO | LOGO | G***, G***, G***, G***, G*** |
| 4 | FRC0603F2200TS | easyeda2kicad:R0603 | R1, R2, R3, R4 |
| 4 | XL-1608WWC-06 | easyeda2kicad:LED0603-RD_WHITE | U2, U3, U4, U5 |
| 2 | RC0603JR-070RL | easyeda2kicad:R0603 | R5, R6 |
| 1 | CL10B224KB8NNNC | easyeda2kicad:C0603 | C1 |
| 1 | NT3H1101W0FHKH | easyeda2kicad:XQFN-8_L1.6-W1.6-P0.50-BR | U1 |
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Questions
How big is the PCB Business Card PCB?
It measures 85.6 × 54 mm and has 2 copper layers, 1.6 mm thick.
What parts does the PCB Business Card use?
17 parts, built around the XL-1608WWC-06, NT3H1101W0FHKH, FRC0603F2200TS and RC0603JR-070RL. 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 PCB Business Card KiCad files?
From the Sealflux/PCB_Business_Card repository on GitHub, at the commit this page was made from: the board is PCB/PCBBusinessCard.kicad_pcb and its schematic PCB/PCBBusinessCard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the PCB Business Card design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).