We're now going to look at a second mode of the 555 timer. In this case, it outputs a continuous stream of pulses. This can be used to drive logic gates and create binary counters amongst other things.

555 Astable

Following on from http://drumcoder.co.uk/blog/2013/aug/06/555-timer-monostable/, we're using the same chip …

When I was at school, I had a strong interest in electronics. This hobby eventually led me to doing a computing degree, and gave me the career I have today. Recently, I found my box of old electronic components, and discovered that it was 20 years since I last did …