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Smith badge
mpkendall/smith-badgea speedran nfc badge which looks kinda cool
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 11
- Nets
- 9
- Pads
- 16
- Tracks, vias
- 26, 6
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 20 Aug 2026
- Updated
- 20 Aug 2026
Overview
Smith badge is an open-source printed circuit board by mpkendall, from the mpkendall/smith-badge repository on GitHub. It is a 2-layer board with 11 parts on 9 nets, routed with 26 tracks and 6 vias.
Its parts include 1 capacitor, 1 resistor, 1 IC, 1 diode and 1 inductor. It belongs with the lEDs and displays and radio and wireless boards of this library.
README
README.mdSmith Badge
A repo for my speedran NFC card. Themed like a Smith chart!
I had to calculate the right amount of inductance (taking into effect the LED in the center) and then generated the appropriate coil footprint.
Parts
11| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | LOGO | LOGO | G***, G***, G***, G***, G***, G*** |
| 1 | 220nF | Capacitor_SMD:C_0603_1608Metric | C1 |
| 1 | 47R | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | L | smith-badge:smithnfccoil2 | L1 |
| 1 | LED | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | NT3H2111-2211 | smith-badge:NT3H2111W0FHKH | U1 |
Questions
What parts does the Smith badge use?
11 parts. 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 Smith badge KiCad files?
From the mpkendall/smith-badge repository on GitHub, at the commit this page was made from: the board is hardware/smith-badge/smith-badge.kicad_pcb and its schematic hardware/smith-badge/smith-badge.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Smith badge design in my own project?
Its repository states no licence, so its author keeps all rights: ask mpkendall before reusing the design.
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