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rfxcom / node-rfxcom

Node.js client for talking to an RFXtrx433 device
MIT License
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Getting EV1527 protocol info #76

Closed k-mooijman closed 3 years ago

k-mooijman commented 6 years ago

Hi What is the correct way to get EV1527 protocol info ? It comes true as lighting4 but without useful data or info Thanks Kasper

maxwellhadley commented 6 years ago

Lighting4 is an odd one: basically, it is the 'native' protocol of the PT2262, EV1527, and similar chips used by very many cheap RF sensors and switches. These basically transmit a just 24-bit binary number. The allocation of meaning to these bits - i.e. which bits are 'address' and which 'data', is up to the circuit designer and there is no standard (although some of the transmitter chips implement use 12 of the bits as an address).

You will have to reverse-engineer how the bits are being used, I'm afraid, by exercising the device/sensor and noting the data values received.

k-mooijman commented 6 years ago

do you have any documentation ( useful ) on this protocol ? I would like to try to reverse-engineer this but anny info to get started is welcome !

maxwellhadley commented 6 years ago

I don't have any specific documentation. Try googling 'EV1527 protocol' - it brought up some useful-looking pages for me

maxwellhadley commented 3 years ago

Closing stale (non) issue