2 layers130 × 80 mm
Kegmon2 4scales
mp-se/pcb-designs
This repository contains the PCB designs for my projects and currently the following is included:
18 parts3
2 layers123.1 × 30.7 mm
Gravitymon pet zero
mp-se/pcb-designs3This repository contains the PCB designs for my projects and currently the following is included:
- Size
- 123.1 × 30.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 17
- Nets
- 18
- Pads
- 49
- Tracks, vias
- 105, 0
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 7 May 2025
- Updated
- 13 Sep 2026
Overview
Gravitymon pet zero 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 123.1 × 30.7 mm with 17 parts on 18 nets, routed with 105 tracks and 0 vias.
It is built around the DS18B20 and TP4056A. Its parts include 6 connectors, 5 resistors, 4 ICs and 1 switch.
Main components
2README
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
17| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 10k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1, R2 |
| 2 | 220k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R4, R5 |
| 1 | 3.3k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R3 |
| 1 | Balance 1 | Connector_Wire:SolderWirePad_1x01_SMD_5x10mm | J4 |
| 1 | Balance 2 | Connector_Wire:SolderWirePad_1x01_SMD_5x10mm | J5 |
| 1 | Balance 3 | Connector_Wire:SolderWirePad_1x01_SMD_5x10mm | J6 |
| 1 | Battery_Cell | magnus:battery_holder_18650 | BAT2 |
| 1 | DS18B20 | Package_TO_SOT_THT:TO-92L_Inline_Wide | U8 |
| 1 | Force Config | Connector_PinHeader_2.00mm:PinHeader_1x02_P2.00mm_Vertical | J3 |
| 1 | SW_SPST | Button_Switch_THT:SW_Slide_SPDT_Angled_CK_OS102011MA1Q | SW2 |
| 1 | TP-4056 | magnus:lipo-tp4056 | U1 |
| 1 | Wireless Charge | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J1 |
| 1 | Wireless Charge 2 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J2 |
| 1 | ~ | magnus:gyro-mpu6050 | U7 |
| 1 | ~ | magnus:waveshare-esp32c3-zero | U5 |
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Questions
How big is the Gravitymon pet zero PCB?
It measures 123.1 × 30.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Gravitymon pet zero use?
17 parts, built around the DS18B20 and TP4056A. 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 Gravitymon pet zero KiCad files?
From the mp-se/pcb-designs repository on GitHub, at the commit this page was made from: the board is gravitymon_pet_zero/gravitymon_pet_zero.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 Gravitymon pet zero design in my own project?
Its repository states no licence, so its author keeps all rights: ask mp-se before reusing the design.