ESP32 - Temperature Sensor - LCD
|1||×||ESP-WROOM-32 Dev Module|
|1||×||Micro USB Cable|
|1||×||Temperature Sensor DS18B20|
|1||×||4.7 kΩ resistor|
About Temperature Sensor and LCD
If you do not have knowledge of temperature sensor and LCD (pinout, how they work, how to connect them to ESP32, how to program for them...), learn about them in the following tutorials:
- Wiring diagram
Image is developed using Fritzing. Click to enlarge image
- If this is the first time you use ESP32, see how to setup environment for ESP32 on Arduino IDE
- Connect the ESP32 board to your PC via a micro USB cable
- Open Arduino IDE, select the right ESP32 board and COM port
On Arduino IDE, Go to Tools Manage Libraries
- Search “OneWire”, then find the OneWire library by Paul Stoffregen
- Click Install button to install OneWire library.
- Search “Dallas”, then find the DallasTemperature library by Miles Burton.
- Click Install button to install DallasTemperature library.
- Search “LiquidCrystal I2C”, then find the LiquidCrystal_I2C library by Frank de Brabander
- Click Install button to install LiquidCrystal_I2C library.
- Copy the above code and paste it to Arduino IDE
- Click Upload button on Arduino IDE to compile and upload code to ESP32 board
- Put the sensor on hot and cold water, or grasp the sensor by your hand
- See the result in LCD
If LCD displays nothing, see Troubleshooting on LCD I2C
Read the line-by-line explanation in comment lines of source code!
We are considering to make the video tutorials. If you think the video tutorials are essential, please subscribe to our YouTube channel to give us motivation for making the videos.
Temperature Sensor and LCD on Commercial Products
※ NOTE THAT:
Note that this tutorial is incomplete. We will post on our Facebook Page when the tutorial is complete. Like it to get updated.