projects / sigrok-dumps.git / blame
| Commit | Line | Data |
|---|---|---|
| 57bbb26e S |
1 | ------------------------------------------------------------------------------- |
| 2 | THGN800: OOK data | |
| 3 | ------------------------------------------------------------------------------- | |
| 4 | ||
| 5 | This is an example capture of an Oregon Scientific THGN800 temperature and | |
| 6 | humidity sensor which transmits at 433.92 MHz using Manchester encoding and | |
| 7 | 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 v3 THGN800 you will need a preamble of '1111 ...' | |
| 13 | (default) in the ook decoder. Currently you can ook decode either a preamble of | |
| 14 | '1111 ...' or '1010 ...' but not both at the same time, so you can see Oregon | |
| 15 | v2.1 or v1/3 sensors. | |
| 16 | ||
| 17 | Details: | |
| 18 | http://www.oregonscientificstore.com/p-381-oregon-scientific-thgn800-oem-wireless-temperature-humidity-sensor-for-professional-weather-stations-not-in-retail-packaging.aspx | |
| 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_thgn800.sr: | |
| 37 | Contains a single set of pulses that belong to an Oregon Scientific THGN800 | |
| 38 | temperature and humidity sensor. These should decode as channel 1, | |
| 39 | battery OK, rollingcode F6, temp +17.3 deg C, humidity 52%, checksum OK. |