In this post I will show how to construct a stopwatch which automatically starts timer when the runner begins to run and the timer stops when the runner reaches the end. The elapsed time between starting and ending point is displayed on a 16 x 2 LCD. First let’s begin by learning how to configure […]
Games and Sports Projects
Simple Digital Stopwatch Circuit (4-Digit)
In this article we’ll study a digital stopwatch design configured around the very popular IC LM555 in conjunction with a 4-digit counter IC with multiplexed 7-segment output drivers (MM74C926). Written and Submitted by: Jennifer Goldy Circuit Operation IC MM74C926 is internally made up of a 4-digit counter, an output latch up stage, a npn output […]
Electronic Scoreboard Circuit Using IC 4033 Counter
A simple multi-digit electronic score board system can be built using a basic 4033 IC counter circuit. The whole procedure is explained in the following article. So far we have learned quiet a lot about this interesting IC 4033 through the following posts that have comprehensively discussed the pinouts and cascading procedures of the chip. […]
Make a Football Electricity Generator Circuit
The explained football electricity generator circuit was developed by me in response to the request sent by one of the readers Mr.Bright. Though I am not sure if the explained concept would actually give the intended results, it’s worth trying as it’s quite easy to understand and build. Designing the Generator There were three things that I had to consider while designing the […]
10 LED Simple Roulette Wheel Circuit Diagram
A very simple 10 LED roulette wheel circuit is shown here. pressing the button starts the LEDs in a rotational motion (sequencing) at full swing initially, and gradually slows down, until it stops to a particular, randomly selected LED. The randomness of the selection depends upon the time for which the push remains switched ON […]