2 layers28.3 × 39.8 mm
LevelShifter
gusmanb/logicanalyzer
24 channel, 100Msps logic analyzer hardware and software
21 parts5.1kGPL-3.0
2 layers103 × 26.3 mm
Scale pcb
jmgrosen/hyperscale3A kitchen scale that helps you follow a recipe.
- Size
- 103 × 26.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 21
- Nets
- 32
- Pads
- 87
- Tracks, vias
- 98, 11
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 11 Dec 2023
- Updated
- 11 Oct 2026
Overview
Scale pcb is an open-source printed circuit board by jmgrosen, from the jmgrosen/hyperscale repository on GitHub, published under the CERN-OHL-P-2.0 licence. It is a 2-layer board of 103 × 26.3 mm with 21 parts on 32 nets, routed with 98 tracks and 11 vias.
Its parts include 7 capacitors, 4 resistors, 2 ICs, 2 switches and 1 connector.
README
README.mdHyperscale
A kitchen scale that helps you follow a recipe.
Building
Export Gerbers from KiCAD for the PCB. Build STLs from OpenSCAD for the case.
An actual assembly guide is TODO!
For the firmware, install the Xtensa rustc target and espflash as described in the Rust on ESP Book. Then cargo espflash flash.
Licensing
The physical design files are licensed under the CERN Open Hardware Licence Version 2 - Permissive.
The firmware code is licensed under MIT. However, due to its use of Slint, the resulting firmware as a whole is licensed under GPLv3.
Parts
21| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 0.1uF | Capacitor_SMD:C_0805_2012Metric | C1, C2, C5, C6 |
| 2 | 47 | Resistor_SMD:R_0805_2012Metric | R1, R2 |
| 2 | 4K7 | Resistor_SMD:R_0805_2012Metric | R3, R4 |
| 1 | 10uF | Capacitor_SMD:C_1206_3216Metric | C7 |
| 1 | 1uF | Capacitor_SMD:C_0805_2012Metric | C3 |
| 1 | 330pF | Capacitor_SMD:C_0805_2012Metric | C4 |
| 1 | Buzzer | Buzzer_Beeper:Buzzer_TDK_PS1240P02BT_D12.2mm_H6.5mm | BZ1 |
| 1 | Load Cell | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J3 |
| 1 | RotaryEncoder_Switch | Rotary_Encoder:RotaryEncoder_Bourns_Vertical_PEC12R-3xxxF-Sxxxx | SW1 |
| 1 | SW_Push | Button_Switch_THT:SW_PUSH-12mm | SW2 |
| 1 | ~ | Module:LilyGo_T-Display-S3-AMOLED | U2 |
| 1 | ~ | Package_SO:SOP-16_3.9x9.9mm_P1.27mm | U1 |
The 17 most common of 21 parts.
Questions
How big is the Scale pcb PCB?
It measures 103 × 26.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Scale pcb use?
21 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 Scale pcb KiCad files?
From the jmgrosen/hyperscale repository on GitHub, at the commit this page was made from: the board is pcb/scale_pcb.kicad_pcb and its schematic pcb/scale_pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Scale pcb design in my own project?
Its repository publishes it under the CERN-OHL-P-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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