Difference between revisions of "Protocol decoder:Am230x"
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Uwe Hermann (talk | contribs) (Created page with "{{Infobox protocol decoder | id = am230x | name = AM230x/DHTxx | description = Aosong AM230x/DHTxx humidity/temperature sensor protocol | status...") |
Uwe Hermann (talk | contribs) |
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File:Aosong am2301 top.jpg|<small>AM2301, top</small> | File:Aosong am2301 top.jpg|<small>AM2301, top</small> | ||
File:Aosong am2301 bottom.jpg|<small>AM2301, bottom</small> | File:Aosong am2301 bottom.jpg|<small>AM2301, bottom</small> | ||
File:Am2301 pcb open.jpg|<small>AM2301 PCB, open</small> | |||
File:Am2301 pcb top.jpg|<small>AM2301 PCB, top</small> | |||
File:Am2301 pcb bottom.jpg|<small>AM2301 PCB, bottom</small> | |||
File:Aosong dht11 top.jpg|<small>DHT11, top</small> | File:Aosong dht11 top.jpg|<small>DHT11, top</small> | ||
File:Aosong dht11 bottom.jpg|<small>DHT11, bottom</small> | File:Aosong dht11 bottom.jpg|<small>DHT11, bottom</small> | ||
File:Dht11 pcb open.jpg|<small>DHT11 PCB, open</small> | |||
File:Dht11 pcb top.jpg|<small>DHT11 PCB, top</small> | |||
File:Dht11 pcb bottom.jpg|<small>DHT11 PCB, bottom</small> | |||
</gallery> | </gallery> | ||
Revision as of 16:20, 12 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