Don
ESP8266 powered web server + LED control + DHT22 temperature/humidity sensor reading
The ESP8266 System-on-chip (SoC) has recently came out of nowhere and has been taking by storm the IoT DIY world. It is a $4.50 Wi-Fi capable chip that has remarkable specs, obsoleting overnight a number of similar products that are out there. The price factor, availability of SDK and a fast growing community make this chip quite attractive.
The most common usage for the chip so far has been to interface it to MCU and utilize the AT commands that are available in the default firmware, however that is quite an abuse of the power under the hood of the ESP8266. I’ve decided not to use external MCU and utilize the chip itself for a proof-of-concept project:
The project shall be able to
- Run a HTTP daemon
- Be configurable through web interface
- Provide web UI for switching on/off a LED connected to GPIO pin
- Provide web UI for reading a temperature+humidity sensor (DHT22)
There are few different versions of the breakouts available, most popular is the DIP version . However that version only has GPIO0 and GPIO2 routed to the header, so I also purchased the SMD version that has all the pins available. I have made couple interface strip-board PCBs so that I can interface the modules with a “pure” 3.3V FTDI cable:
Read More...
http://harizanov.com/2014/11/esp8266-powered-web-server-led-control-dht22-temperaturehumidity-sensor-reading/
ESP8266 powered web server + LED control + DHT22 temperature/humidity sensor reading
- Running a Web Server on the ESP8266 | Hackaday
- ESP8266 powered web server + LED control + DHT22 temperature/humidity sensor reading | Martin's corner on the web
- Home · esp8266/esp8266-wiki Wiki · GitHub
- bbs.espressif.com • View topic - ESP8266 SDK (esp_iot_sdk_v0.9.2_14_10_24)
- ESP8266 Community Forum • Index page
- at_0.9.1 · esp8266/esp8266-wiki Wiki · GitHub
- ESP8266 WI07c Wifi Module | Electrodragon
- ESP8266 | Connecting the world and everything
- System on a chip - Wikipedia, the free encyclopedia
- ESP8266 Community Forum • View topic - Introducing esp-httpd: webserver on an ESP8266.
- fasmide/esp_dht22 · GitHub
- ESP8266 Wifi Board, Full IOs SMD | Electrodragon
