Archive for 26 May 2010

One led voltmeter (Part 1)

Part 1, 2, 3, 4 This is a minimal voltmeter which reads the signal from one of the analog ports and converts its value in to a sequence of led flashes. Long flashes for volts, short flashes for tenths of volts. /* One led voltmeter or ‘the voltmeter of the poor’ Reads analog port 0 […]