In this example we will connect a HDC1008 sensor to our ARduino and display the output on a 128 x 32 I2C OLED LCD display, you could use a different type of LCD or a bigger OLED variety but that is …

In this example we will connect a MLX90614 to our ARduino and display the output on a 128 x 32 I2C OLED LCD display, you could use a different type of LCD or a bigger OLED variety but that is what …

The is a 16-bit, general purpose parallel I/O port expander for I2C bus applications. The 16-bit I/O port functionally consists of two 8-bit ports (PORTA and PORTB). The MCP23017 can be configured to operate in 8-bit or 16-bit modes. Lets …

The Microchip MCP3008 ADC is a 10-bit Analog to Digital (A/D) converter with on-board sample and hold circuitry. Communication with the device is accomplished using a simple serial interface compatible with the SPI protocol. The MCP3008 operates over a broad …

A few of the code examples and projects on this site use modules containing the Tm1638 driver chip, I was interested in this one which is the TM1637 which appears to be a more basic version which can only control …

The MLX90614 is a non-contact infrared thermometer with a measurement range from -70 to +380 degree Celsius. Just connect the four leads to your Arduino and you will have a accurate thermometer with a resolution of 0.01 and a accuracy …

The TEA5767HN is a single-chip electronically tuned FM stereo radio for low-voltage applications with fully integrated Intermediate Frequency (IF) selectivity and demodulation. The radio is completely adjustment-free and only requires a minimum of small and low cost external components. The …

The PCF8574 is an 8 bits I/O port expander that uses the I2C protocol. Using this IC, you can use only the SDA and SCL pins of your Arduino board to control up to 8 digital I/O ports. A0,A1,A2 are address …

I purchased this module as part of a microcontroller kit, its an interesting little module as it has 16 buttons but with only 1 I/O line is required, an analog input. You connect this to your Arduino and read in the …

The ML8511 measures the amount of ultra violet rays contained in sunlight, and it is used for the equipment which displays the suntan by a ultra violet rays, the guidance for UV care of skin, etc The sensor detects 280-390nm …

In this example we use the DHT22 (or AM2302) humidity/temperature sensor and the Arduino UNO board to read data and print it out to the serial monitor. The DHT22 is better than the DHT11 because it has a wider range of measurement, …

In a previous example we connected a SHT21 temperature and humidity sensor to an Arduino – http://www.arduinoprojects.net/sensor-projects/sht21-humidity-and-temperature-sensor-example.php. This was a bit basic as the data was sent via the serial port, so lets add an LCD to display the temperature and …

The SHT21 is a low cost humidity and temperature sensor. Its an I2C device so again is very simple to connect to any arduino The SHT2x sensors contain a capacitive type humidity sensor, a band gap temperature sensor and specialized …

I recently acquired a BMP180 barometric pressure sensor and was pleased to see that it used the BMP085 library from Adafruit, what I was interested in was how accurate the altitude reading was. The BMP180 is the function compatible successor …