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A comment on We're making an open-source $30 GPS/mesh radio, would like advice.

Re:We're making an open-source $30 GPS/mesh radio, would lik... by reisr3 on Wednesday March 11, 2020 @08:16AM (#22545121)
This is awesome, thanks for sharing! I'm considering using this for a project where I need to measure distance between two nodes. Couple questions:

1. You mention "location and distance" between member nodes. I assume this is based on the LORA RSSI? How precise is the reading?

2. Do you support the "TTGO LORA32"? Your Github Readme mentions it, but Pages does not.

3. Will the TTGO LORA32 and Heltec LoRa 32 measure distance without being connected to a phone?

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Re:We're making an open-source $30 GPS/mesh radio, would lik... by alfla on Wednesday March 11, 2020 @08:21AM (#22545153)
If the nodes have GPS it's fairly straightforward to calculate distance and bearing.
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Re:We're making an open-source $30 GPS/mesh radio, would lik... by reisr3 on Wednesday March 11, 2020 @10:04AM (#22545914)
Right, and accuracy of ~9m makes sense for this application. The smaller supported ESP32's, however, don't have onboard GPS. Does it use RSSI or need to be paired with a phone?

Not that it's really relevant here, but I'm wondering if the LORA RSSI can be used to determine distance inside 9m.

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