2 layers123.1 × 30.7 mm
Gravitymon pet zero
mp-se/pcb-designs
This repository contains the PCB designs for my projects and currently the following is included:
17 parts3
2 layers130 × 80 mm
Kegmon2 4scales
mp-se/pcb-designs3This repository contains the PCB designs for my projects and currently the following is included:
- Size
- 130 × 80 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 18
- Nets
- 53
- Pads
- 133
- Tracks, vias
- 319, 10
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 7 May 2025
- Updated
- 13 Sep 2026
Overview
Kegmon2 4scales is an open-source printed circuit board by mp-se, from the mp-se/pcb-designs repository on GitHub. It is a 2-layer board of 130 × 80 mm with 18 parts on 53 nets, routed with 319 tracks and 10 vias.
It is built around the HX711, DS18B20 and RJ45. Its parts include 7 connectors, 6 ICs and 1 resistor. It belongs with the ESP32 boards of this library.
Main components
3
HX711
SOP-16-40℃~+85℃ 1.4mA 10Hz、80Hz 1MHz~20MHz、11.0592MHz 2 2.6V~5.5V 20mV、40mV、80mV 24 Built-in External、Built-in SPI Support Yes SOP-16 Analog to Digital Converters (ADC) ROHSAvia SemiconAnalog To Digital Converters (ADC)
DS18B20
TO-92-55℃~+125℃ 12bit 3V~5.5V 750ms Single-bus ±0.4℃ TO-92 Temperature Sensors ROHSUMWTemperature Sensors
RJ45
TH-12PTH-12P SMT ROHSJLCPCB AssemblyUncategorised
README
README.mdThis repository contains the PCB designs for my projects and currently the following is included:
Projects
Pressuremon
This PCB is tested and works for new builds
- Digital edition v1.3 - Folder: pressuremon_digital
Gravitymon
This PCB is tested and works for new builds
- Gravitymon Zero PET (Gravitymon) v1.2 - Folder: gravitymon_pet_zero
- Gravitymon Zero PILL (Gravitymon) v1.1 - Folder: gravitymon_pill_zero
The following are development related pcb's for testing new boards
- Gravitymon Super Mini Adapter v1.0 - Folder: gravitymon_supermini_adapter
- Gravitymon Zero Adapter v1.0 - Folder: gravitymon_zero_adapter
Kegmon 2
These are still in development and not fully tested!
- Kegmon 2 Scale Base v1.1 - Folder: kegmon2_base
- Kegmon 2 - 4 scales v1.1 - Folder: kegmon2_4scales
- Kegmon 2 - 2 scales v1.0 - Folder: kegmon2_2scales
Reusable components
- ADS1115 - Analog to I2C board
- GYRO-MPU6050 - Gyro board
- LIPO-TP4056 - Litium charger board
- LOADCELL-HX711 - Loadcell (Pink / Red versions) board
- LOLIN-ESP32C3-MINI - ESP32 board
- LOLIN-ESP32C3-PICO - ESP32 board
- LOLIN-ESP32S3-PRO - ESP32 board
- TENSTAR-ESP32S3-MINI - ESP32 board (Super-mini board)
- WAVESHARE-ESP32C3-ZERO - ESP32 board (Zero board)
License
This repository is dual-licensed:
- Open Source: GNU General Public License v3.0 (GPL v3)
- Commercial: Commercial License Agreement
For individual hobbyists and personal use, the GPL v3 applies (with a Hobbyist Safe Harbor for small-scale distribution). For commercial use, organizations, or large-scale distribution, a Commercial License is required.
See LICENSE and LICENSE_COMMERCIAL for full terms and conditions.
(c) 2021-2026 Magnus Persson
Parts
18| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | HX711 | magnus:hx711 | U2, U3, U4, U5 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_2.2mm_M2_ISO7380_Pad | H1, H2, H3, H4 |
| 4 | RJ45 | Connector_RJ:RJ45_Amphenol_54602-x08_Horizontal | J1, J2, J3, J4 |
| 1 | 3.3k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 1 | DS18B20 | Package_TO_SOT_THT:TO-92_Inline | U6 |
| 1 | Extension | Connector_JST:JST_NV_B04P-NV_1x04_P5.00mm_Vertical | J6 |
| 1 | LOLIN ESP32S3 PRO | magnus:lolin-esp32s3-pro | U1 |
| 1 | Power IN | Connector_JST:JST_NV_B02P-NV_1x02_P5.00mm_Vertical | J5 |
| 1 | TFT SPI Connector | Connector_PinHeader_2.54mm:PinHeader_1x10_P2.54mm_Vertical | J7 |
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Questions
How big is the Kegmon2 4scales PCB?
It measures 130 × 80 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Kegmon2 4scales use?
18 parts, built around the HX711, DS18B20 and RJ45. 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 Kegmon2 4scales KiCad files?
From the mp-se/pcb-designs repository on GitHub, at the commit this page was made from: the board is kegmon2_4scales/kegmon2_4scales.kicad_pcb and its schematic gravitymon_pet_zero/gravitymon_pet_zero.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Kegmon2 4scales design in my own project?
Its repository states no licence, so its author keeps all rights: ask mp-se before reusing the design.