THE MQ-3 is suitable for detecting Alcohol, Benzine, CH4, Hexane, LPG, CO. The sensitivity of the sensor can be adjusted by using the potentiometer.
Author
iainhendry
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In this article we simply show you 4 examples using an RGB LED connected to an Arduino
The RGB led we had was a common anode type, so if you only have common cathode one’s available you will have to modify the code examples later on -
Here are a few code examples for the Wemos RGB LED Shield, the shield consists of 7 RGB LEDs (WS2812B-mini) each wtih 24-bit RGB color 9 optional control pins (Default:…
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In this article we compare the BMP180 and SHT30 temperature sensors using a Wemos Mini and various shields. We will look and see if there are any significant difference in temperature readings.
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In this example we will create a simple traffic light system with a micro:bit. This is fairly simple and at a basic level involves switching red, amber and green LEDs on and off at certain time intervals.
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In this article we show you how to create a dice using your micro:bit, there are a couple of ways to do this and we will also show a couple of different development examples.