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MQTT Firmware (Standalone Observer)

Flash standalone MQTT observer firmware with the MeshCore observer flasher. MeshCore Canada no longer hosts separate observer firmware binaries on this page.

MeshCore Canada presets verified

The observer firmware currently offered by observer.gessaman.com is built from Adam Gessaman's mqtt-bridge-implementation-flex branch at commit c0c845f5. That branch includes the built-in presets meshcore-ca-1 and meshcore-ca-2, pointing to mqtt1.meshcore.ca and mqtt2.meshcore.ca.

Flash The Observer

  1. Open observer.gessaman.com.
  2. Pick your board under MQTT Observer Firmware.
  3. Choose Repeater or Room Server.
  4. For a new board or a board you are repurposing, enable Erase device and flash the merged image.
  5. When flashing finishes, use Configure via USB for the repeater or room server setup screen, or use Console for CLI setup.

First flash can erase settings

First flashing observer firmware, especially on boards with a changed partition layout, can wipe stored settings and identity data. Back up an existing device private key before repurposing it.

Required MeshCore Canada Settings

Use the repeater or room server setup screen where possible. If a setting is not exposed in the setup screen, use the console on the flasher page and paste the CLI commands below.

Setting Value
Radio preset USA/Canada (Recommended)
Raw radio values 910.525 MHz / 62.5 kHz / SF7 / CR5
CLI radio command set radio 910.525,62.5,7,5
Path hash mode 3-byte advert path hashes: set path.hash.mode 2
MQTT slot 1 meshcore-ca-1
MQTT slot 2 meshcore-ca-2
IATA A real 3-letter IATA airport code near the observer
WiFi 2.4 GHz network credentials

IATA codes

Use a real airport code such as YOW, YYZ, YUL, YVR, or YYC. Do not use placeholders such as XXX or HOME. Do not use CAN as shorthand for Canada; it is an airport code for Guangzhou. See the IATA region code list for Canadian quick choices.

Command Builder

Use this builder to create a CLI block for the flasher Console. It runs only in your browser.

Manual CLI Reference

If you prefer to type commands manually, replace YOW, YourWiFiNetwork, and YourWiFiPassword with your own values:

set name YOW-Repeater-01
set radio 910.525,62.5,7,5
set path.hash.mode 2
set mqtt.iata YOW
set wifi.ssid YourWiFiNetwork
set wifi.pwd YourWiFiPassword
set wifi.powersave none
set mqtt1.preset meshcore-ca-1
set mqtt2.preset meshcore-ca-2
set mqtt3.preset none
set mqtt4.preset none
set mqtt5.preset none
set mqtt6.preset none
set mqtt.status on
set mqtt.packets on
set mqtt.raw off
set mqtt.rx on
set mqtt.tx advert
set bridge.enabled on
set repeat on
advert
reboot

For an observe-only node that should not repeat mesh traffic, use:

set repeat off

Verify

After the device reboots, reopen the flasher Console and run:

get wifi.status
get mqtt.iata
get mqtt1.preset
get mqtt2.preset
get mqtt.status
get path.hash.mode

Expected broker presets:

get mqtt1.preset
> meshcore-ca-1
get mqtt2.preset
> meshcore-ca-2

Once WiFi and MQTT are connected, use Check Your Observer to confirm packets are reaching MeshCore Canada.

  • Observer Flasher

    Flash MQTT observer firmware and open the serial console.

    observer.gessaman.com

  • IATA Region Codes

    Pick the real 3-letter airport code nearest to the observer.

    IATA codes

  • Check Your Observer

    Confirm that the observer is online and reporting.

    verify status