https://github.com/tobycm/homemade-security-key

DIY a security key! powered by a rp2350 for a pretty good security :D
https://github.com/tobycm/homemade-security-key

Last synced: 4 months ago
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DIY a security key! powered by a rp2350 for a pretty good security :D

• Host: GitHub
• URL: https://github.com/tobycm/homemade-security-key
• Owner: tobycm
• License: mit
• Created: 2025-07-27T05:59:59.000Z (11 months ago)
• Default Branch: main
• Last Pushed: 2025-08-01T14:41:42.000Z (11 months ago)
• Last Synced: 2025-08-29T23:49:08.495Z (10 months ago)
• Size: 3.3 MB
• Stars: 1
• Watchers: 0
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# homemade-security-key

DIY a security key! powered by a rp2350 for a pretty good security :D

with a nice 3d printed case and it is also easy to print, this key is hella nice for only 6$ each 🔥

the pcb is still well made tho, considerate thoughts have been put into the usb routing, and power delivery too!

## 3D Render

### PCB

![3d render](assets/3d.png)

### Case

![case1](assets/case1.png)

![case2](assets/case2.png)

| Type | Qty | Value |

| :--- | :-- | :--- |

| Capacitor | 1 | 10u |

| Capacitor | 10 | 100n |

| Capacitor | 1 | 1u |

| Capacitor | 1 | 22u |

| Capacitor | 4 | 4.7u |

| Capacitor | 2 | 18p |

| LED | 1 | B38G3RGB-10D0003H2U1930 |

| Connector | 1 | UP20-C-F-G-FL-1-P12-TR |

| Connector | 1 | UP2-AH-1-TH |

| Inductor | 1 | 4.7u |

| Inductor | 1 | AOTA-B201610S3R3-101-T |

| Resistor | 1 | 5.1k |

| Resistor | 2 | 27 |

| Resistor | 1 | 1k |

| Resistor | 1 | 10k |

| Resistor | 1 | 147 |

| Resistor | 3 | 33 |

| Button | 1 | PTS526SM15SMTR2 LFS |

| Buck regulator | 1 | AP63203WU-7 |

| Flash | 1 | W25Q16JVSS |

| MCU | 1 | RP2350A-QFN60 |

| Crystal | 1 | ABM8-272-T3 |

| PCB | 1 | |

| Stencil | 1 | |

| Solder paste | 1 | I already have |

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**Total cost:** $64.78 USD