Flashing and Configuring a Companion Node

This guide will help you flash a node and configure it to operate as a companion.

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Flashing a Companion Node

The easiest way to flash a MeshCore-supported node is by using the official web flasher tool in Google Chrome:

MeshCore Web Flasher
(Only Chrome supports the serial connection required for flashing.)

Steps

1. Plug your device into your computer via USB.
2. Open the MeshCore Web Flasher.
3. Select your device hardware.
4. Select the firmware type: Companion Radio (Bluetooth).
5. Click Enter DFU Mode.
6. Click Erase Flash.
7. Click Flash to install the MeshCore firmware.

Note:
If the flash step fails after erasing, refresh the page, click Enter DFU Mode again, then click Flash to retry.

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Configuring a Companion Node

After flashing, follow these steps to complete setup:

1. Pair the node with your phone or computer (usually over Bluetooth).
2. Give the node a descriptive name (for example: your callsign, location, or handle).
3. Set the Ottawa frequency defaults:
   910.525 MHz / BW: 62.5 kHz / SF7 / CR5
4. Test the node by sending a message in the Public channel.
5. If a repeater hears you, the message will show Heard X Repeats instead of just Sent.

Tip:
You may want to disable Message Settings → Auto Reset Path.
This isn’t required, but many users find it useful when testing unstable links because it prevents the path from constantly resetting.

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