Review on HiLetgo® Temperature Humidity 1 5V 3 6V Compatible by Tom Goodlow
Temperature and humidity sensor on ONE SMALL board!
HiLetgo's HTU21D temperature and humidity sensor does a great job. It's very small - runs on 3.3V (don't use 5V) and is very accurate. I've attached an image showing how I connected it to my NodeMCU and output the readings to the serial port. I'm amazed at how small this thing is. Now I can add temperature and humidity readings to all my I2C projects! Two thumbs up!
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