Meshtastic signal level probing tool

A tool reporting signal levels of a probe packet as received by the target node. Only one packet is transmitted on the air. Any other communication goes via an mqtt broker.

It's advised to use a secure private broker to restrict publishing to the mqtt channel by a third party.

Example output

On a successful probe the fields are:

1. the moment of the probe initiation (publishing to the mqtt channel),
2. delay in milliseconds between probe tx and rx reports from the broker,
3. Meshtastic packet id of the probe,
4. RSSI level,
5. SNR level.

2024-04-29T13:07:33.712Z timeout (no rx report)
2024-04-29T13:08:33.716Z   1379 2abb1de1  -91  -9.75
2024-04-29T13:09:33.718Z    919 2abb1de2  -88     -9
2024-04-29T13:10:33.720Z    916 2abb1de3  -89     -8
2024-04-29T13:11:33.735Z   1321 2abb1de4  -89   -7.5
2024-04-29T13:12:33.738Z timeout (no rx report)
2024-04-29T13:13:33.740Z   1723 2abb1de6  -92  -10.5
2024-04-29T13:14:33.741Z   3679 2abb1de7  -89   -7.5

Running

• Configure the nodes:
  • Both nodes should uplink their primary channel with json output enabled to allow the tool to receive reports from the nodes.
  • The source node should have a downlinked mqtt channel to allow the tool to initiate a probe.
  • Enable "OK to MQTT" in Lora Config on the target side (since 2.5.0 firmware version).
• Configure ping.yaml using the template.
• Run npm i once and then node probe.js to start a probing loop.