I wanted to design a small weather station and use it for tracking for long periods of time the outdoor weather variables automatically and recording into a spreadsheet. It was really just for fun, to understand how is the behavior of these weather factors in my county and at home. My county has very good condition for farmers and produce vegetables and others green food. In excess. To sell food for our main city.

Step 1

Arduino without MC used as serial Interface with ESP8266

Step 2

Connect ESP8266 with Arduino and upload the code from IDE.

Esp8266-02 Module

Using the serial port upload the code directly to the ESP8266 module. Remember that once you do this the original firmware is erased. If you want the original firmware again in your ESP8266 you will need a long process to do that. Check this video which can give you a shortcut about it.

Flash Firmware ESP8266

Step 3

Connect DHT22 sensor:

Step 4

Check your communication with the Thingspeak channel you previously had configured:

Record data, download files to excel and enjoy using he APPs from Thingspeak

Spaces in the graph without data are generated because your pc goes to hibernate mode

Step 5

Remember your ESP8266 needs a big amount of current, so a cause of failure is that you need to feed it from your PC USB port and from an external power source..

Use: USB+external power source for feed at 3,3 VDC the ESP8266

Current required for a ESP8266 module

Step 6

If you can record 8 fields in a channel please start to thinking what other weather sensors you can add to your station - barometric pressure? Maybe!