2 layers75 × 105 mm
2 layers100 × 100 mm
Escale
werediver/escale4Kitchen / coffee scale
- Size
- 100 × 100 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 32
- Nets
- 48
- Pads
- 192
- Tracks, vias
- 156, 137
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 27 Jun 2021
- Updated
- 25 Feb 2024
Overview
Escale is an open-source printed circuit board by werediver, from the werediver/escale repository on GitHub. It is a 2-layer board of 100 × 100 mm with 32 parts on 48 nets, routed with 156 tracks and 137 vias.
It is built around the PMV75UP. Its parts include 6 resistors, 4 connectors, 3 capacitors, 3 ICs and 3 switches. It belongs with the RP2040 boards of this library.
Main components
1README
README.mdKitchen / coffee scale
This is a kitchen / coffee scale project repository. Contains both the hardware design files and the firmware source code.
Prototype one
- Raspberry Pi Pico
- Firmware in Rust (escale_fw_rs)
- Battery powered (AA×2)
Prototype zero
The firmware source code is at a very early stage of development. See escale_fw.
The hardware prototype is assembled on a breadboard and consists of the following components:
- Seeeduino XIAO
- 0.96" SSD1315 OLED display
- MikroE Load Cell 2 Click
- Two 12 mm THT-mount push-buttons
Parts
32| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 3.3k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R3, R4, R5, R6 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3_Pad | H1, H2, H3, H4 |
| 4 | MountingHole | MountingHole:MountingHole_2.2mm_M2 | H5, H6, H7, H8 |
| 2 | 0.62m | Local:L_D13.3_d7.3_Horizontal | L1, L2 |
| 2 | 22u | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C1, C2 |
| 1 | 0.1u | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C3 |
| 1 | 2.2 | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R2 |
| 1 | 4.7 | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1 |
| 1 | BAT | Molex Milli-Grid:Molex_Milli-Grid_87833-04xx | J1 |
| 1 | BTN A | Local:300SPxxxxxxVS2xx | SW2 |
| 1 | BTN B | Local:300SPxxxxxxVS2xx | SW3 |
| 1 | Cortex Debug | Molex Milli-Grid:Molex_Milli-Grid_87833-10xx | J3 |
| 1 | DBG UART | Molex Milli-Grid:Molex_Milli-Grid_87833-04xx | J4 |
| 1 | DISP | Local:Seeed_Grove_20x40 | U1 |
| 1 | DISP | Molex Milli-Grid:Molex_Milli-Grid_87833-08xx | J2 |
| 1 | Load Cell 2 Click | Local:MikroE Click | U2 |
| 1 | Logo_Open_Hardware_Small | Symbol:OSHW-Logo_19x20mm_SilkScreen | LOGO1 |
| 1 | PMV75UP | Package_TO_SOT_SMD:SOT-23_Handsoldering | Q1 |
| 1 | PWR | Local:300SPxxxxxxVS2xx | SW1 |
| 1 | PWR ON SEL | Jumper:SolderJumper-3_P1.3mm_Bridged12_Pad1.0x1.5mm | JP1 |
| 1 | Pico | RPi Pico:RPi_Pico_SMD_TH | U3 |
Questions
How big is the Escale PCB?
It measures 100 × 100 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Escale use?
32 parts, built around the PMV75UP. 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 Escale KiCad files?
From the werediver/escale repository on GitHub, at the commit this page was made from: the board is KiCad/eScale.kicad_pcb and its schematic KiCad/eScale.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Escale design in my own project?
Its repository states no licence, so its author keeps all rights: ask werediver before reusing the design.
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