Base Duo
Base Duo
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The heart of your Meshtastic® radio, engineered for performance and reliability. Featuring IO designed for ultimate flexibility. Dual Band LoRa.
Main Features
- Microcontroller: nRF52840
- LoRa Radio: LR1121
- 8MB QSPI Flash
- Buttons: User + Reset
- QWIIC / STEMMA QT Port
- Flexible IO: 8 GPIO + 2 Power IO + UART + I2C
- Meshtastic® Flashed and Licensed
Power System
- Compatible Battery Chemistry:
- Li-ion
- LFP (LiFePO4)
- Solar Power Input with VDPM
- USB-C Power:
- 500mA Default Charge
- 1A Fast Charge option
- Powerpath: Prevents battery discharge when power source is available
- Safety Protections:
- Input Overvoltage Protection
- Battery Undervoltage Protection
- Battery Short Protection
- Battery Overcurrent Protection
- Input Current Limit Protection
- Thermal Regulation and Thermal Shutdown
- Battery Thermal Fault Protection
- Advanced Charger IC: BQ28185
Product Includes
- Base Duo Board
- Sub-GHz LoRa Stubby Antenna
- 2.4GHz LoRa FPC Antenna
- Mounting Screws + Hex Key
- USB-C Cable
Specs
- Sub-GHz LoRa Connector: SMA
- 2.4GHz LoRa Connector: U.FL
- LoRa TX Max Power: 20dBm SubG / 11.5dBm 2.4G
- Bluetooth LE Antenna
- Bluetooth TX Max Power: 6dBm
- USB-C: Power and Data
- Battery Connector: 3-pin Molex PicoBlade
- Mounting Holes: 3x M2
- Board Size: 42x32mm
- Weight: 10g
In our resources section for the BASE System we provide an evolving user guide, documentation and downloads including spec sheets, schematics, software source files and more.
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Hardware seems decent, but no MeshCore support. As of March 2026 there's no official support.
I went with the Super I/O as well as the Base DUO and I suggest you do the same. Had it up and running in no time. The only issue I have is that no one else is on 2.4ghz just yet and that I should have bought 2.
STL for the enclosure was found on makerworld.com
A very excellent design board for the Mesh networks using sub GHz!
I am now waiting for a case for it and for the Super IO!
Awesome little node! I only regret buying just one. Still building out the mesh near by myself, and it’s 22db tx, so hard to say how well it’s doing, but I’m making contact. Very responsive unit overall. (Buying number 2 soon!)
For a project I was researching and came over your page and found just what I wanted. Order on Friday and received it on Monday morning in Berlin Germany.
Thanks a lot