My First Arduino-based Robot

My First Arduino-based Robot Finally, I managed to assemble my first Arduino-based robot. I bought it from this Italian online shop. They provide all the instructions as well, but you also need some tools (screwdrivers, soldering tool, etc.) and some patience. It works fine! Thanks to a quite basic IR sensor, this small rover can …

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The LHC @ home: How to build an electromagnet

At the LHC, the main experiment at CERN, protons and other charged particles generated during collisions are deflected using powerful electromagnets. These magnets can yield enormous B fields of several Tesla. For comparison, Earth's magnetic field has a strenght of ~10^-4 T, a "natural" unit which is called Gauss after the guy who measured it …

Temperature Measurement using Arduino and a Thermistor

Components Arduino Duemilanove Board, a USB cable and of course a PC/Mac A 10kOhm thermistor A 10kOhm resistor A breadboard wires Hot topic It'g getting hotter and hotter. Is it due to global warming? Who knows, but in the meanwhile we can measure the temperature with our Arduino board and a thermistor. A thermistor is …

Solar-Powered Arduino Board

Components Arduino Duemilanove Board 12V Solar Panel 1N4007 Diode 25V 100uF Capacitor 9V Rechargeable Battery and connector A breadboard and some wires (suggested red and black) A multimeter to measure tensions 1) Green Power Arduino datasheet suggests us to power it with 6-20V, being aware that the upper limit could be dangerous. It seems that …