Capture temperature data with the ESP8266 and the LM75 Sensor
Conclusion
This project shows just how flexible the ESP8266 is. Automatic Functions to switch the chip on and off allow you to use a battery without any issues. You could also consider using a small solar cell as an energy source. You could even use a second ESP8266 as a server to show the measurement values on a display.
The measured values in the database also offer numerous possibilities for further analysis. Let your imagination roam when considering this chip for other projects.
Infos
- ESP8266: https://www.sparkfun.com/products/13678
- LM75 (3.3 Volt): https://www.modmypi.com/raspberry-pi/breakout-boards/52pi/temperature-sensor-lm75
- Controlling the LM75 Temperature sensor: Martin Mohr, "Keeping Cool", RPG 03/2015, S. 70, http://www.raspberry-pi-geek.com/Archive/2015/12/Controlling-the-LM75-temperature-sensor-on-the-I2C-bus
- I2C Basics: Martin Mohr, "Getting to know the Raspberry Pi Bus", RPG 01/2015, S. 68, http://www.raspberry-pi-geek.com/Archive/2015/09/Getting-to-know-the-Raspberry-Pi-I2C-bus
- IntelliJ IDEA: https://download.jetbrains.com/idea/ideaIC-15.0.3.tar.gz
- Code for this article: ftp://ftp.linux-magazine.com/pub/listings/raspberry-pi-geek.com/22/ESP8266
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