The BMP280 based pressure and temperature sensors have an amazing accuracy for their price point (around 1$USD, 1Euro, 1GBP or cheaper!) and they are incredibly easy to connect up and use. Both I²C or SPI busses are usually supported. Below is the one similar to those that are readily available. They usually come with header pins that need soldering, although.....

Tutorial on using cheap heart rate sensors along with a graphical display output, now available (also on Youtube, see further down): http://www.xtronical.com/basics/heart-beat-sensor-ecg-display/.....

Note : This page has been superseded, please use this new guide. Heart beat sensors now seem to be cheap and plentiful (around 2 USD, a little less than 2 GBP and around 1.80 Euros). Here we'll hook one up with an OLED display to show the results. Let's Go... The heart beat sensor I bought is shown below: They.....

Latest article on the Arduino Space Invaders project is now available as a post and video: http://www.xtronical.com/projects/space-invaders/parts-1-7/part-6-explosion-animations/ Video :.....

In this episode we will add the explosion animations for the Invaders. I did mention we'd add in the scoring as well but on reflection I'm going to leave that for a later episode because I do not want to put two different items in this article and scoring would be better suited when we have more game elements. As.....

Article on adding 1 or multiple temperature sensors to your projects http://www.xtronical.com/basics/temperature-sensor-dallas-ds18b20/ Also available on youtube.....

Temperature can be sensed in a variety of ways, from a simple thermistor connected to the analogue pin of your micro-controller to fully digital versions that send their information over a bus like I²C. In this "Basics" article we will be using the digital serial bus kind. Pictured below is the device that we will be setting up. It uses.....

This episodes adds the players missile and collision detection, available as a post on this site here and as a video, see below......

In this episode we look at launching some missiles from the player tank and checking for collisions with the Invaders. Also available on Youtube for those that like a more visual approach, OK,Let's go! The full source code is available here, to use it (or just view it) just click expand and copy and paste to your Arduino Development.....

Part 4 of the Arduino Invaders build/code is available here. In this episode we implement the players tank and movement including adding the required push buttons to our hardware and wiring them up......