Difference between revisions of "Protocol decoder:Am230x"
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(add AM2305 and AM2306 to resources (they use the same protocol)) |
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** [http://www.aosong.com/en/products/details.asp?id=110 AM2301] ([http://meteobox.tk/files/AM2301.pdf datasheet]) | ** [http://www.aosong.com/en/products/details.asp?id=110 AM2301] ([http://meteobox.tk/files/AM2301.pdf datasheet]) | ||
** [http://www.aosong.com/en/products/details.asp?id=117 AM2302] ([http://www.adafruit.com/datasheets/Digital%20humidity%20and%20temperature%20sensor%20AM2302.pdf datasheet]) | ** [http://www.aosong.com/en/products/details.asp?id=117 AM2302] ([http://www.adafruit.com/datasheets/Digital%20humidity%20and%20temperature%20sensor%20AM2302.pdf datasheet]) | ||
** AM2303 ([http://www.aosong.com/asp_bin/Products/en/AM2303.pdf datasheet] | ** AM2303 ([http://www.aosong.com/asp_bin/Products/en/AM2303.pdf datasheet]) | ||
** [http://aosong.com/en/products/details.asp?id=121 AM2305] ([http://www.aosong.com/asp_bin/Products/en/AM2305.pdf datasheet]) | |||
** [http://aosong.com/en/products/details.asp?id=115 AM2306] ([http://www.aosong.com/asp_bin/Products/en/AM2306.pdf datasheet]) | |||
** [http://www.aosong.com/en/products/details.asp?id=109 DHT11] ([http://akizukidenshi.com/download/ds/aosong/DHT11.pdf datasheet]) | ** [http://www.aosong.com/en/products/details.asp?id=109 DHT11] ([http://akizukidenshi.com/download/ds/aosong/DHT11.pdf datasheet]) | ||
* [https://learn.adafruit.com/dht/ Adafruit: DHT sensor tutorial] | * [https://learn.adafruit.com/dht/ Adafruit: DHT sensor tutorial] | ||
Revision as of 21:25, 13 October 2014
 | |
| Name | AM230x/DHTxx |
|---|---|
| Description | Aosong AM230x/DHTxx humidity/temperature sensor protocol |
| Status | supported |
| License | GPLv2+ |
| Source code | decoders/am230x |
| Input | logic |
| Output | am230x |
| Probes | SDA |
The am230x protocol decoder decodes the Aosong AM2301/AM2302/AM2303/DHT11 temperature and humidity sensor single-wire protocol.
Hardware
AM2301, top
AM2301, bottom
AM2301 PCB, open
AM2301 PCB, top
AM2301 PCB, bottom
DHT11, top
DHT11, bottom
DHT11 PCB, open
DHT11 PCB, top
DHT11 PCB, bottom
See the am230x directory for example capture files.
Protocol
A custom single-wire protocol (not to be confused with the Dallas 1-Wire protocol!) is used to get the measured values from the sensor.
The actual payload consists of a humidity value, a temperature value, and a checksum.
Resources
- Aosong (vendor website)
- Adafruit: DHT sensor tutorial
- arduino.cc: DHTLib