Archive for 27 May 2010

One led voltmeter (Part 2)

Part 1, 2, 3, 4 Auto ranging This improvement is quite easy, and it may be useful in some circumstances. Arduino contains in fact one A/D converter which is connected to an 8 ports multiplexer: 6 of them are available from the 28 DIL PDIP package, the one which is used on Arduinos. Before getting […]