nibble-esp32-firmware

Automatic Meshtastic firmware build for Retia's 38C3 Nibble (esp32-s3-zero + rfm95)

Quick-Start

Latest Meshtastic firmware build: firmware-nibble-esp32-2.7.20.016e68e.bin

You can grab the latest Meshtastic development firmware build from this repo's release page and flash it with Retia's Nugget Flasher.

If you rather build yourself, a build script has been provided for linux environments. Requirements: bash, git, python3, python3-venv

1. Clone this repository
2. Make build.sh executable
3. Run build.sh
4. Flash firmware-nibble-esp32-VERSION.bin with Retia's Nugget Web Flasher

Linux Troubleshooting

If you get a "permission error" or "interface not found" error while trying to flash the Nibble, the most likely issue is missing udev rules.
You can read a comprehensive guide on udev rules here.
For a quick fix follow this:

1. Create a new udev rule file for esp32 in /etc/udev/rules.d/99-esp32.rules with the following content:

#esp32-s3
SUBSYSTEMS=="usb", ATTRS{idVendor}=="303a", ATTRS{idProduct}=="1001", ATTRS{manufacturer}=="Espressif *", TAG+="uaccess", MODE="0660"

2. Reload udev rules

$ sudo udevadm control --reload-rules
$ sudo udevadm trigger

3. Finally, follow the web flashing instructions in the "Software" section from here.

Disclaimer

This is just a personal convenience repository dedicated to automated working builds of Meshtastic firmware for Retia's 38C3 version of their Nibble node (esp32s3 + rfm95).

The original code and schematics can be found in the following links:

• https://github.com/RetiaLLC/Nibble
• https://retia.io/blogs/news/how-to-make-a-nibble-simple-cutie-meshtastic-node-for-c3
• https://github.com/skickar/retia-boards
• https://github.com/meshtastic/firmware/tree/develop/variants/esp32s3/nibble_esp32