RFM69 Initial RSSI Tests

After using Low Power Lab’s library and Martin’s initial sketches, I was able to test the RSSI of a sensor inside a big metal box. It was surprising to see how powerful the RFM69 signal is – the signal degradation was negligible. RSSI varied from 28 – 32.

Sample from inside metal box:

[99] [RX_RSSI:-32] nodeId=99 uptime=4993200 temp=91.23 – ACK sent. Pinging node 99 – ACK…ok!
[99] [RX_RSSI:-32] nodeId=99 uptime=4994101 temp=91.23 – ACK sent.
[99] [RX_RSSI:-32] nodeId=99 uptime=4995000 temp=91.23 – ACK sent.
[99] [RX_RSSI:-32] nodeId=99 uptime=4995901 temp=91.23 – ACK sent. Pinging node 99 – ACK…ok!
[99] [RX_RSSI:-31] nodeId=99 uptime=4996800 temp=91.23 – ACK sent.
[99] [RX_RSSI:-32] nodeId=99 uptime=4997701 temp=91.23 – ACK sent.
[99] [RX_RSSI:-35] nodeId=99 uptime=4998600 temp=91.23 – ACK sent. Pinging node 99 – ACK…ok!

Sketches Used

Library

Sensor Closeup

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