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<!doctype html><html lang=en class=no-js> <head><meta charset=utf-8><meta name=viewport content="width=device-width,initial-scale=1"><link rel="shortcut icon" href=../_media/favicon.ico><meta name=generator content="mkdocs-1.1, mkdocs-material-5.0.0rc4"><title>AM2301 temperature and humidity sensor - Tasmota</title><link rel=stylesheet href=../assets/stylesheets/main.c1451e9e.min.css><link rel=stylesheet href=../assets/stylesheets/palette.4444686e.min.css><meta name=theme-color content=#2196f3><link href=https://fonts.gstatic.com rel=preconnect crossorigin><link rel=stylesheet href="https://fonts.googleapis.com/css?family=Barlow:300,400,400i,700%7CRoboto+Mono&display=fallback"><style>body,input{font-family:"Barlow",-apple-system,BlinkMacSystemFont,Helvetica,Arial,sans-serif}code,kbd,pre{font-family:"Roboto Mono",SFMono-Regular,Consolas,Menlo,monospace}</style><link rel="preconnect dns-prefetch" 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Subscribe & Unsubscribe </a> </li> <li class=md-nav__item> <a href=../TLS/ title="SSL/TLS on Tasmota" class=md-nav__link> SSL/TLS on Tasmota </a> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle" data-md-toggle=nav-23 type=checkbox id=nav-23> <label class=md-nav__link for=nav-23> Smart Home Integrations <span class="md-nav__icon md-icon"> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d=M8.59,16.58L13.17,12L8.59,7.41L10,6L16,12L10,18L8.59,16.58Z /></svg> </span> </label> <nav class=md-nav aria-label="Smart Home Integrations" data-md-level=1> <label class=md-nav__title for=nav-23> <span class="md-nav__icon md-icon"> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d=M20,11V13H8L13.5,18.5L12.08,19.92L4.16,12L12.08,4.08L13.5,5.5L8,11H20Z /></svg> </span> Smart Home Integrations </label> <ul class=md-nav__list data-md-scrollfix> <li class=md-nav__item> <a href=../Alexa/ title=Alexa 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class=md-nav__link> None </a> </li> <li class=md-nav__item> <a href=../openHAB/ title=openHAB class=md-nav__link> openHAB </a> </li> <li class=md-nav__item> <a href=../otto/ title=Otto class=md-nav__link> Otto </a> </li> <li class=md-nav__item> <a href=https://github.com/arendst/Tasmota/issues/3769 title=IOBroker class=md-nav__link> IOBroker </a> </li> <li class=md-nav__item> <a href=https://github.com/tim-hellhake/tasmota-adapter title="Mozilla WebThings Adapter" class=md-nav__link> Mozilla WebThings Adapter </a> </li> <li class=md-nav__item> <a href=https://github.com/BrettSheleski/SmartThingsPublic/blob/master/devicetypes/brettsheleski/sonoff-tasmota.src/readme.md title=SmartThings class=md-nav__link> SmartThings </a> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--active md-nav__item--nested"> <input class="md-nav__toggle md-toggle" data-md-toggle=nav-24 type=checkbox id=nav-24 checked> <label class=md-nav__link for=nav-24> Peripherals <span class="md-nav__icon 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class=md-nav__link> Discord Community </a> </li> </ul> </nav> </div> </div> </div> <div class="md-sidebar md-sidebar--secondary" data-md-component=toc> <div class=md-sidebar__scrollwrap> <div class=md-sidebar__inner> <nav class="md-nav md-nav--secondary" aria-label="Table of contents"> <label class=md-nav__title for=__toc> <span class="md-nav__icon md-icon"> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d=M20,11V13H8L13.5,18.5L12.08,19.92L4.16,12L12.08,4.08L13.5,5.5L8,11H20Z /></svg> </span> Table of contents </label> <ul class=md-nav__list data-md-scrollfix> <li class=md-nav__item> <a href=#configuration class=md-nav__link> Configuration </a> <nav class=md-nav aria-label=Configuration> <ul class=md-nav__list> <li class=md-nav__item> <a href=#wiring class=md-nav__link> Wiring </a> </li> <li class=md-nav__item> <a href=#tasmota-settings class=md-nav__link> Tasmota Settings </a> </li> </ul> </nav> </li> <li class=md-nav__item> <a href=#commands class=md-nav__link> Commands </a> </li> <li class=md-nav__item> <a href=#wemos-dht-shield class=md-nav__link> Wemos DHT Shield </a> <nav class=md-nav aria-label="Wemos DHT Shield"> <ul class=md-nav__list> <li class=md-nav__item> <a href=#tasmota-settings_1 class=md-nav__link> Tasmota Settings </a> </li> </ul> </nav> </li> <li class=md-nav__item> <a href=#sensors class=md-nav__link> Sensors </a> </li> </ul> </nav> </div> </div> </div> <div class=md-content> <article class="md-content__inner md-typeset"> <a href=https://github.com/tasmota/docs/blob/master/docs/AM2301.md title="Edit this page" class="md-content__button md-icon"> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M20.71,7.04C21.1,6.65 21.1,6 20.71,5.63L18.37,3.29C18,2.9 17.35,2.9 16.96,3.29L15.12,5.12L18.87,8.87M3,17.25V21H6.75L17.81,9.93L14.06,6.18L3,17.25Z"/></svg> </a> <h1>AM2301 temperature and humidity sensor</h1> <p>AM2301 driver supports <a href=https://kropochev.com/downloads/humidity/AM2301.pdf>AM2301 (DHT21)</a>, <a href=https://www.sparkfun.com/datasheets/Sensors/Temperature/DHT22.pdf>AM2302 (DHT22)</a> and <a href=http://akizukidenshi.com/download/ds/aosong/AM2321_e.pdf>AM2321</a> temperature and humidity sensors. Introduced in Tasmota through <a href=https://sonoff.tech/product/accessories/am2301>Sonoff AM2301</a> accessory for <a href=/devices/Sonoff-TH.md>Sonoff TH</a>.</p> <p><strong>This driver is ONLY for <em>single wire</em> implementations of the sensor.</strong></p> <h2 id=configuration>Configuration<a class=headerlink href=#configuration title="Permanent link">~</a></h2> <h3 id=wiring>Wiring<a class=headerlink href=#wiring title="Permanent link">~</a></h3> <table> <thead> <tr> <th>AM2301</th> <th>ESP266</th> </tr> </thead> <tbody> <tr> <td>-</td> <td>GND</td> </tr> <tr> <td>OUT</td> <td>GPIOx</td> </tr> <tr> <td>+</td> <td>3.3V</td> </tr> </tbody> </table> <h3 id=tasmota-settings>Tasmota Settings<a class=headerlink href=#tasmota-settings title="Permanent link">~</a></h3> <p>In the <em>Configuration -> Configure Module</em> page assign: - GPIOx to <code>AM2301 (2)</code> </p> <p>After a reboot webUI will display temperature and humidity measured.</p> <p><img alt=image src=https://user-images.githubusercontent.com/5904370/68092438-67639700-fe8b-11e9-86df-b2acdc05f9d7.png></p> <p>Sensor sends a <code>tele/%topic%/SENSOR</code> JSON reponse:</p> <div class=codehilite><pre><span></span><code><span class=p>{</span>
<span class=nt>"Time"</span><span class=p>:</span> <span class=s2>"2019-01-01T00:00:00"</span><span class=p>,</span>
<span class=nt>"AM2301"</span><span class=p>:</span> <span class=p>{</span>
<span class=nt>"Temperature"</span><span class=p>:</span> <span class=mf>24.6</span><span class=p>,</span>
<span class=nt>"Humidity"</span><span class=p>:</span> <span class=mf>58.2</span>
<span class=p>},</span>
<span class=nt>"TempUnit"</span><span class=p>:</span> <span class=s2>"C"</span>
<span class=p>}</span>
</code></pre></div> <h2 id=commands>Commands<a class=headerlink href=#commands title="Permanent link">~</a></h2> <p><a href=../Commands/#tempoffset><code>TempOffset</code></a> can be used for calibrating the measured temperature. This setting affects <strong>all</strong> temperature sensors on the device.</p> <h2 id=wemos-dht-shield>Wemos DHT Shield<a class=headerlink href=#wemos-dht-shield title="Permanent link">~</a></h2> <p>Like the <a href=https://wiki.wemos.cc/products%3aretired%3adht_shield_v1.0.0>Wemos DHT11 shield specs</a> the DATA OUT pin of Wemos DHT22 is connected to D4 of the Wemos.</p> <p><img alt=image src=https://user-images.githubusercontent.com/5904370/68092516-5bc4a000-fe8c-11e9-916c-ec10e7e781b0.png></p> <h3 id=tasmota-settings_1>Tasmota Settings<a class=headerlink href=#tasmota-settings_1 title="Permanent link">~</a></h3> <p>In the <em>Configuration -> Configure Module</em> page assign:</p> <ol> <li>GPIO2 to <code>AM2301 (2)</code></li> </ol> <h2 id=sensors>Sensors<a class=headerlink href=#sensors title="Permanent link">~</a></h2> <p>Read more about <a href=http://www.kandrsmith.org/RJS/Misc/Hygrometers/calib_many.html>differences between sensors</a>.</p> <p><img alt=image src=https://user-images.githubusercontent.com/5904370/68092629-85ca9200-fe8d-11e9-842f-803f36e8064c.png></p> </article> </div> </div> </main> <footer class=md-footer> <div class=md-footer-nav> <nav class="md-footer-nav__inner md-grid" aria-label=Footer> <a href=../A4988-Stepper-Motor-Controller/ title="A4988 stepper motor controller" class="md-footer-nav__link md-footer-nav__link--prev" rel=prev> <div class="md-footer-nav__button md-icon"> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d=M20,11V13H8L13.5,18.5L12.08,19.92L4.16,12L12.08,4.08L13.5,5.5L8,11H20Z /></svg> </div> <div class=md-footer-nav__title> <div class=md-ellipsis> <span class=md-footer-nav__direction> Previous </span> A4988 stepper motor controller </div> </div> </a> <a href=../APDS-9960/ title="APDS 9960" class="md-footer-nav__link md-footer-nav__link--next" rel=next> <div class=md-footer-nav__title> <div class=md-ellipsis> <span class=md-footer-nav__direction> Next </span> APDS 9960 </div> </div> <div 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search: Object.assign({
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}, typeof search !== "undefined" && search)
})
</script> </body> </html>