2 layers
Encoder
byrantech/laptop
anyon_e, a highly integrated, high end, open source laptop. Attempt the impossible.
7 parts4.3kMIT
2 layers30 × 56 mm
glasses
- Size
- 30 × 56 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 7
- Nets
- 7
- Pads
- 25
- Tracks, vias
- 33, 0
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 14 Dec 2025
- Updated
- 27 Aug 2026
Overview
Crest is an open-source printed circuit board by AM1NOM, from the AM1NOM/ImageRecognitionGlasses repository on GitHub. It is a 2-layer board of 30 × 56 mm with 7 parts on 7 nets, routed with 33 tracks and 0 vias.
Its parts include 3 resistors, 3 switches and 1 connector.
README
README.mdIMAGE RECOGNITION GLASSES
We are aiming to build a device that can help blind people be aware of their surroundings, using a camera, image recognition, and text-to-speech. There are several stages involved in building the device, including designing the hardware and developing the software. You can find our Word document about this project here.
Screenshots
-
Schematic:
-
PCB:
-
CAD:
Bill of Materials (BOM)
| Part Name | Reason / Description | Quantity | Unit Price (£) | Seller (Direct Product Link) | Notes |
|---|---|---|---|---|---|
| Raspberry Pi 5 (8GB) | Main processing computer running software and camera tasks | 1 | 120.00 | The Pi Hut | Official UK Raspberry Pi reseller |
| PiSugar 3 | Battery | 1 | 39.99 | Amazon | Pi compatible UPS |
| Samsung EVO Select 128GB microSD (A2) | Operating system and storage | 1 | 11.99 | Amazon | High endurance storage |
| Raspberry Pi Screw & Standoff Kit | Mounting hardware for assembly | 1 | 9.99 | Amazon | M2.5 compatible |
| 4-Way Straight Pin | Electrical interface for peripheral modules | 1 | 3.15 | Amazon | Male |
| JST-PH 4-pin Cable | Cable between Raspberry Pi GPIO and custom PCB | 1 | 1.00 | The Pi Hut | 2.0 mm pitch JST PH cable |
| Tactile Switch | User input/buttons | 3 | 3.19 | Amazon | Momentary push-button |
| 470Ω 0603 Resistor | Current limiting or signal conditioning | 3 | 3.45 | [ Amazon | Standard SMD resistor |
| Raspberry Pi 5 Active Cooler | Prevents thermal throttling during heavy workloads | 1 | 9.60 | The Pi Hut | Official cooler |
| M2.5 Screw Assortment Pack | Hardware for mounting boards, PCBs, and standoffs | 1 | 4.80 | The Pi Hut | Nylon screw & standoff kit |
| USB Webcam | Small camera for video input | 1 | 18.10 | Amazon | a compact 1080p model |
| USB Headset | Audio output for listening/calls | 1 | 5.99 | Amazon | headphones |
| YSJJZRL USB to PH2.0 Cable | Cable to connect USB ports to PH2.0 peripheral board | 1 | £4.98 | Amazon | USB 2.0 data + power, 1.5 m, PH2.0 female |
For the complete, raw BOM file see BOM.csv.
Firmware
Firmware and microcontroller code are in CODE/Firmware.py.
Other files
- PCB and schematic files: PCB/hackpad.kicad_pcb
- PCB project files and library:
PCB/folder - 3D models for case:
CAD/folder
License
This project is open-source.
Parts
7| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | R | Resistor_SMD:R_0603_1608Metric | R1, R2, R3 |
| 3 | SW_Push | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW1, SW2, SW3 |
| 1 | Conn_01x04 | Connector_JST:JST_PH_B4B-PH-K_1x04_P2.00mm_Vertical | J1 |
Questions
How big is the Crest PCB?
It measures 30 × 56 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Crest use?
7 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 Crest KiCad files?
From the AM1NOM/ImageRecognitionGlasses repository on GitHub, at the commit this page was made from: the board is PCB/crest/crest.kicad_pcb and its schematic PCB/crest/crest.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Crest design in my own project?
Its repository states no licence, so its author keeps all rights: ask AM1NOM before reusing the design.
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