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 digital SHT2x humidity sensor series is used in high volumes in a wide variety of …

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. This is a picture of the breakout …

Previously we showed an example of the fan module here http://www.arduinolearning.com/learning/basics/arduino-and-l9110-fan-module-example.php . This used digital I/O but of course you can send an analog value using a pin that supports PWM. I found out if the number was under 75 the fan …

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 …

Generally you can buy any Arduino board on the internet and they will work out of the box, this means that you can find many suitable development boards at reasonable prices on the internet if you are prepared to buy …

You need to download and LCD Assistant , now create a 84 x 48 pixel bitmap using a drawing program. I used Paint.net for windows to create this image Import this into LCD Assistant and save the output, this then is pasted …

In a previous example, we did a basic copy of the Arduino capacitance shield but hey outputting to the Serial Monitor is a bit boring, so how about we pick an LCD or LCD shield to try this out with. …

I fancied trying the 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 as the Chipkit and the MSP_EXP430G2 to …

This was an app that interested me as it actually gives you the Arduino IDE on your Android device, so obviously a tablet is way better than a phone. One slight problem as the developer explains is that the app …

The Arduino Companion is an Android app which has been designed to help anyone getting into Arduino and electronics. The app contains the full Arduino Reference for offline use, as well as a very useful resistor calculator.   As well as …

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 …

Another example for the Arduino Esplora, we will read the value from the slider and play a tone based on that from the buzzer. You can see the location of these parts in the picture of the Esplora underneath This …