This DIY cellphone is not just a basic communication device; it comes with a range of features that make it quite functional. For instance, it includes a display, buttons, speaker, and microphone ...

Fig. 1: The author’s prototype Fig. 2: Android app interface. Circuit and working Fig. 3 shows circuit diagram of the Android phone-controlled robot. The circuit is built around an Arduino UNO board ...

Why not create your very own high-speed camera trigger using an Arduino, piezoelectric sensor (as a sound sensor), a DSLR camera, and an external flash. Watch the video after the break to see it ...