Prego wireless weather station
2.5.2018 Prego wireless weather station Analyzing Prego 433 MHz wireless WX station with rtl_433 tool (analyze mode) showed mostly: OOK detected. Modulation, no clue and a long string of 1's. I recorded AM demodulated recordings with SDR# while pressing channel button of the transmitter device. Transmission looks like differential pulse position modulation and it is repeated six times when button is pressed (or when it happens timed transmission). Data begins with short sync/preamble. Assuming MSB first and short distance between pulses is 0 and long pulse is 1: CH1 24.6C 42% 1111 00010111 11010011 11011101 10101000 10001000 00 CH2 24.7C 42% 1111 00010111 11010100 00100001 10101011 01110110 10 CH3 24.8C 41% 1111 00010111 11011000 11100001 10100100 10001010 11 It could be possible to receive raw OOK data from Prego wireless WX station by using Dragino Lora Module (Semtech SX1278) & Arduino Uno. This code uses SX1278 OOK mode in continuous (raw) operating mode (with bitsync disab...