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…
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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…
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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…
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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…
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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…
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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…
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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…
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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,…
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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…
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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…
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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…
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In this example we connect an Arduino to a L9110 fan module. This is a commonly found, basic low cost module which consists of an L9110 chip and a small motor attached. You need 4 connections between the arduino and…
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This was a simple project which appeared on the ARduino website – https://www.arduino.cc/en/Tutorial/CapacitanceMeter , to look at the theory visit that page. I was wanting to see how accurate this is and also wanted to test this on other variants such…
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The MQ-2 gas sensor module is suitable for detecting LPG, i-butane, propane, methane ,alcohol, Hydrogen, smoke. Code In this example we simply connect the AOUT to Analog pin 0 and read in the value and output this via the serial monitor…