2 layers50 × 145 mm
SmartRemote
Circuit-Digest/Smart-Universal-Remote-with-Learning-function-and-Google-Assistant-Support
Smart Universal Remote with Learning function and Google Assistant Support
75 parts3
4 layers63.3 × 89.1 mm
HCF Badge
NullByteZero/HCF2025-badge1A repo with both hardware and software files for HCF CTF badge 2025.
- Size
- 63.3 × 89.1 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 16
- Nets
- 28
- Pads
- 42
- Tracks, vias
- 58, 4
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 25 Sep 2025
- Updated
- 25 Sep 2025
Overview
HCF Badge is an open-source printed circuit board by NullByteZero, from the NullByteZero/HCF2025-badge repository on GitHub. It is a 4-layer board of 63.3 × 89.1 mm with 16 parts on 28 nets, routed with 58 tracks and 4 vias.
It is built around the CR2032-BS-6-1 and K3-1296S-E2. Its parts include 2 resistors, 2 diodes, 1 IC and 1 switch. It belongs with the lEDs and displays boards and the RISC-V boards of this library.
Main components
2
CR2032-BS-6-1
-Battery base CR2032 Phosphor bronze - ROHSQ&JButton And Strip Battery Connector
K3-1296S-E2
SMD,6.6x2.7mm-25℃~+80℃ 1.4mm 10000 times 2.7mm 300mA 4V 6.6mm Rectangular Columnar SMD(SMT) Tab SPDT Surface Mount, Right Angle White SMD,6.6x2.7mm Slide Switches ROHSHRO ElectronicsSlide Switches
README
README.mdHCF 2025 Badge
A custom badge for Hack Club Feri CTF 2025, designed with the help of Nikolett S.
On the back sits a CH32V003 microcontroller that drives two LEDs to blink out a secret message. This repository contains both the hardware design and the firmware that brings it to life.
Repository Contents
hardware/→ KiCad project filesfirmware/→ Source code for the badge
Badge Preview
Front
Back
Credits
- Design: Nikolett S.
- Ideas: Hexxit
Parts
16| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | TestPoint_Pad_D1.5mm | TestPoint:TestPoint_Pad_D1.5mm | T1, T2, T3 |
| 2 | 50 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2 |
| 2 | LED | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D2, D3 |
| 1 | CH32V003FxPx | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U3 |
| 1 | CR2032-BS-6-1 | Card:BAT-TH_CR2032-BS-6-1 | B1 |
| 1 | K3-1296S-E2 | PCBLIB_SW-SMD_K3-1296S-E2_2025-01-26:SW-SMD_K3-1296S-E2 | SW1 |
| 1 | LOGO | Card:CardBack_B.Mask | G*** |
| 1 | LOGO | Card:CardBase_F.SilkS | G*** |
| 1 | LOGO | Card:CardBase_F.Cu | G*** |
| 1 | LOGO | Card:CardBase_F.Mask | G*** |
| 1 | LOGO | Card:CardBase_In1.Cu | G*** |
| 1 | LOGO | Card:CardBack_B.Cu | G*** |
Questions
How big is the HCF Badge PCB?
It measures 63.3 × 89.1 mm and has 4 copper layers, 1.6 mm thick.
What parts does the HCF Badge use?
16 parts, built around the CR2032-BS-6-1 and K3-1296S-E2. 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 HCF Badge KiCad files?
From the NullByteZero/HCF2025-badge repository on GitHub, at the commit this page was made from: the board is hardware/HCF_Badge.kicad_pcb and its schematic hardware/HCF_Badge.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the HCF Badge design in my own project?
Its repository states no licence, so its author keeps all rights: ask NullByteZero before reusing the design.
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