Enter the HTU21D-F Temperature + Humidity Sensor - the best way to prove the weatherman wrong!
This I2C digital humidity sensor is an accurate and intelligent Humidity and Temperature Sensor. It has a typical accuracy of ±2% with an operating range that's optimized from 5% to 95% RH.
Operation outside this range is still possible - just the accuracy might drop a bit. The temperature output has an accuracy of ±1°C from -30~90°C.
If you're looking to measure temperature more accurately, we recommend the MCP9808 High Accuracy I2C Temperature Sensor Breakout Board.
Such a lovely chip - so we spun up a breakout board that includes the Filtered version (the white bit of plastic which is a PTFE filter to keep the sensor clean), a 3.3V regulator and I2C level shifting circuitry.
This lets you use it safely with any kind of microcontroller with 3.3V-5V power or logic.
To get you going fast, we spun up a custom made PCB in the STEMMA QT form factor, making them easy to interface with.
The STEMMA QT connectors on either side are compatible with the SparkFun Qwiic I2C connectors.
This allows you to make solderless connections between your development board and the HTU21Ds or to chain them with a wide range of other sensors and accessories using a compatible cable.
QT/Qwiic Cable is not included, but we have a variety in the shop.
Each order comes with one fully assembled and tested PCB breakout and a small piece of header.
You'll need to solder the header onto the PCB to use in a breadboard but it's fairly easy and takes only a few minutes even for a beginner.
It's also very easy to use, thanks to our Arduino library and tutorial. Check out our tutorial for pinouts, wiring, files, etc.
- I2C 7-bit address 0x40
- PCB CAD files, datasheets, Fritzing object, etc available in the tutorial
- 25.5mm x 17.0mm x 5.0mm
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