Posts Tagged ‘Ic555’

Circuits with IC555

Monday, December 17th, 2012

Some fun circuits with IC555, from my college days, compiled them all and put them under a GIT project. Hopefully I will be working on them in the months to come :)

Till then, visit the below link and get the PDF containing 15 awesome circuits that can be built with IC555

https://github.com/circuitchef/IC555

Random LED POV

Thursday, October 25th, 2012

CKT

Working:
The main aim of this project was to generate a random (Somewhat ) LED blinking using Ic 555.

When browsing I came across an article to use Ic4026 to add some amount of randomness, But that was not enough . So an AND gate to ‘and’ the outputs from two different astable multivirators (Ic 555 Circuits) and that was given as a clock source for the IC 4026. This made sure that the pattern would not be the same always.

One could change the patterns using the two potentiometers (trimmers).These potentiometers ensured that the frequency of the output has changed and thus the clock input to 4026 was altered.

Note : Only five output pins were selected from the set of outputs in a 4026 based on distinct blinking combination.

To make the whole setup spin , One small computer cooling fan was taken and a 9V battery was mounted(Glued) onto it ( In the center) . Now the circuit was mounted over the battery. Now when the fan rotated — The battery rotated along with it and so did the circuit — producing beautiful patterns of light.

Video: