Skip to content
Go to file

Latest commit


Git stats


Failed to load latest commit information.
Latest commit message
Commit time

HDC1000 Arduino Library

Here's my Arduino library for the TI HDC1000 temperature and humidity sensor. It should work with the HDC1008 too but I haven't tested it.

More details about the library and my breakout board for the chip on my website

Setup your sensor:

First, declare it:

HDC1000 mySensor;

Default address is 0x40 and the DRDYn pin is disabled. You can change your address by declaring your sensor like this:

HDC1000 mySensor(addr, DRDYn_pin);

Then, initialize it:


Default options are set to enable both temperature and humidity readings, at 14-bit resolution, with the integrated heater on. You can change them by initializing your sensor like this:

mySensor.begin(mode, resolution, heater);

"mode" can be HDC1000_SINGLE_MEASUR, HDC1000_BOTH_TEMP_HUMI or HDC1000_RST.

"resolution" can be HDC1000_TEMP_HUMI_14BIT, HDC1000_TEMP_11BIT, HDC1000_HUMI_11BIT, HDC1000_HUMI_8BIT.

"heater" can be HDC1000_HEAT_ON or HDC1000_HEAT_OFF.

Read some values

You can read temperature and humidity by using the following commands:

double temperature = mySensor.getTemp(); in Celsius degrees.

double humidity = mySensor.getHumi(); in %

You can also access raw values from the sensor:

uint16_t temp = mySensor.getRawTemp();

uint16_t humi = mySensor.getRawHumi();

Check your battery

The following code returns '1' if the battery voltage is <2.8V, '0' otherwise.

boolean isDead = mySensor.battery();

Read the internal registers' configuration:

This returns the 16-bit value of the internal configuration register (0x02): the last 8 bits are always zero and leading zeros are not displayed.

uint16_t config = mySensor.readConfig();

Happy making!


An Arduino library for the HDC1000 temperature and humidity sensor.



No releases published


You can’t perform that action at this time.