2 layers40 × 30 mm
2 layers41.4 × 60.3 mm
Freezer display pcb
NemoAndrea/freezer-display1Open hardware freezer display primarily intended for freezers used in research labs for biosample storage.
- Size
- 41.4 × 60.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 3
- Nets
- 36
- Pads
- 46
- Tracks, vias
- 45, 5
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 4 Apr 2024
- Updated
- 25 Sep 2026
Overview
Freezer display pcb is an open-source printed circuit board by NemoAndrea, from the NemoAndrea/freezer-display repository on GitHub. It is a 2-layer board of 41.4 × 60.3 mm with 3 parts on 36 nets, routed with 45 tracks and 5 vias.
Its parts include 1 IC, 1 connector and 1 switch. It belongs with the lEDs and displays boards and the ESP32 boards of this library.
README
pcb/freezer-display-pcb/README.mdShim PCB
The PCB for the project is a simple shim PCB, i.e. it merely serves to connect the two boards, functioning as a low-profile connector. Since we are severely constrained in terms of space, and we don't have control over the connectors on the boards that we are connecting, this seems like the best solution.
To assemble the PCB stack, you will need to remove some headers from the Waveshare board:
- the 13 pin single row header
- The 40-pin female Raspberry Pi-compatible header.
- The 6-pin connector that is used for non-raspberry boards.
The shim PCB will solder to the contact of connector 3.
[!TIP] You can temporarily add a M2.5 bolt and nut to keep the boards together and in the correct orientation during soldering. Note that the bolt will need to be removed in the final assembly.
PCB Manufacturing notes
I had my boards manufactured at Aisler. Any board manufacturer that can do castellated edges should be fine. I would opt for a standard thickness.
[!IMPORTANT] The board must be manufactured with castellated edges.
Parts
3| Qty | Value | Footprint | References |
|---|---|---|---|
| 1 | IT8951 board connector castellated | project-footprints:IT8951-diver-castellated | J2 |
| 1 | ProS3 | project-footprints:ProS3_SMD | U1 |
| 1 | SW_Push | Button_Switch_THT:SW_Tactile_SPST_Angled_PTS645Vx83-2LFS | SW1 |
Questions
How big is the Freezer display pcb PCB?
It measures 41.4 × 60.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Freezer display pcb use?
3 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 Freezer display pcb KiCad files?
From the NemoAndrea/freezer-display repository on GitHub, at the commit this page was made from: the board is pcb/freezer-display-pcb/freezer-display-pcb.kicad_pcb and its schematic pcb/freezer-display-pcb/freezer-display-pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Freezer display pcb design in my own project?
Its repository states no licence, so its author keeps all rights: ask NemoAndrea before reusing the design.
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