projects / sigrok-dumps.git / blame
| Commit | Line | Data |
|---|---|---|
| 57bbb26e S |
1 | ------------------------------------------------------------------------------- |
| 2 | BTHR968: OOK data | |
| 3 | ------------------------------------------------------------------------------- | |
| 4 | ||
| 5 | This is an example capture of a virtual Oregon Scientific BTHR968 temperature, | |
| 6 | humidity and pressure sensor which transmits at 433.92 MHz using Manchester | |
| 7 | encoding and amplitude modulation. | |
| 8 | ||
| 9 | The signal was received by an RF Solutions RX12 superhet decoder chip and then | |
| 10 | passed to the logic analyser. | |
| 11 | ||
| 12 | In order to decode the Oregon v2.1 BTHR968 you will need to change the | |
| 13 | preamble to '1010 ...' in the ook decoder. Currently you can ook decode either | |
| 14 | a preamble of '1111 ...' or '1010 ...' but not both at the same time, so you | |
| 15 | can see Oregon v2.1 or v3 sensors. | |
| 16 | ||
| 17 | Details: | |
| 18 | https://gist.github.com/RouquinBlanc/5cb6ff88cd02e68d48ea BTHR918N_ArduinoSender.ino | |
| 19 | https://www.rfsolutions.co.uk/downloads/1481732062DS-AM-RX12.pdf | |
| 20 | ||
| 21 | ||
| 22 | Logic analyzer setup | |
| 23 | -------------------- | |
| 24 | ||
| 25 | The logic analyzer used was a USBee AX Pro / Saleae Logic clone (at 25kHz): | |
| 26 | ||
| 27 | Probe RX12 | |
| 28 | ---------------- | |
| 29 | 0 OUT | |
| 30 | 1 Output from Arduino running virtual BTHR968 | |
| 31 | ||
| 32 | ||
| 33 | Data | |
| 34 | ---- | |
| 35 | ||
| 36 | * oregon_bthr968.sr: | |
| 37 | Contains a single set of pulses that belong to a virtual Oregon Scientific | |
| 38 | BTHR968 temperature, humidity and pressure sensor. These should decode as | |
| 39 | channel 2, battery OK, rollingcode BC, temp 11.2 deg C, humidity 52%, | |
| 40 | pressure 1013mb, checksum OK. |