DIY KIT 68- A digital dice using 74LS47, 74LS90 and seven segment display

This is a different type of digital dice. We have previously seen electronic dice with 7 LEDs. In this project, we have a seven-segment display, not LEDs.

When you press the tactile switch the numbers increase from 0 to 9, and when the switch is released it stops at a random number. Using the 2 jumpers, you can display the numbers from 0 to any number, for example, from 0 to 1 or 0 to 5 or 0 to 8 or 0 to 9. (more…)

DIY KIT 65- NE555 based sound generator DIY kit with a photoresistor

This is yet another NE555 based DIY kit for electronics beginners. A long time ago, I had published this project on this page: https://www.buildcircuit.com/sound-generator/

The electronic kit presented in this article is exactly the same circuit that I had published previously.

The circuit is an astable mode timer. The output frequency of the NE555 varies with the change in resistance of the photoresistor. When you block the light falling on the photoresistor, its resistance drops and that contributes to the change in frequency of NE555. (more…)

DIY KIT 36- NE555 and uA741 based monostable trigger learning kit

This is a basic electronics learning kit based on NE555 and uA741. Check out the following images for assembly. You can see all the images on Flickr also.

Other images of the kit:

 

DIY KIT 24- NE555 based piano kit

This is a very simple NE555 based electronic kit for electronics beginners. It is a basic piano kit. I have written a similar project article before on this website. You can see it here. The kit has been built in an astable multivibrator mode. Every press of the switches results in a change in resistance in the astable multivibrator mode circuit. (more…)

DIY KIT 22- Rain drop sounder circuit using NE555

This is yet again a very simple astable multivibrator circuit using NE555. The circuit produces a sound that somewhat sounds like a raindrop. This is a very basic electronic kit project for electronics beginners and hobbyists. Anyone with basic electronics and soldering skills can build this easily. (more…)

CD4017 and NE555 timer experiments

Step 9- Put NE555 and CD4017 chips over the DIL socket

You can build simple LED chaser circuits using CD4017 and NE555 timer. There are hundreds of projects in the internet for making such simple LED chaser circuits.

(more…)

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