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yamb

YAMB (Yet Another Meshtasic Board) is a meshtastic board centered around outdoor solar powered use. The goals of this project are:

  • Learn more about PCB design and manufacturing.
  • Build a Meshtastic board that has features I am always looking for in an outdoor solar node.
  • Is open source and open hardware so anyone can make it, modify it, and use it.
  • Get the board into hands of people near me that want to use it to help expand our local mesh network.

YAMB PCB

Features

  • Based around the proven RAK4630 module which provides the nrf52840 and SX1262 LoRa radio.
  • Solar power and battery charging using the excellent Voltaic SVR and MCSBC combination.
  • Reset supervisor to ensure the board can recover from power issues like brownouts.
  • Vertical USB-C connector for easy access to the USB port while inside an enclosure.
  • Ports for external power switch and reset button to aide maintenance while enclosed.
  • Plenty of GPIO pins and ports for extending and hacking.
  • Onboard QWIIC / STEMMA QT connector for easy I2C expansion.
  • BME280 temperature, humidity, and pressure sensor.

Schematic

YAMB Board

Notes

Exporting Images

To export images from KiCad, you can use the following command in the terminal:

export KICAD9_3DMODEL_DIR=/Applications/KiCad/KiCad.app/Contents/SharedSupport/3dmodels
kicad-cli pcb export stl yamb.kicad_pcb --output exports/yamb-pcb.stl
kicad-cli pcb render --output=exports/yamb-pcb.png --rotate="310,0,45" --perspective --pan "0,2.2,0" --quality high --zoom 1.3 yamb.kicad_pcb
kicad-cli sch export svg yamb.kicad_sch -n --output exports

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Yet Another Meshtastic Board

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