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 67- How to build Jaycar’s electronic dice DIY kit

This is yet another electronic dice project from Jaycar. When you press the RED button on the PCB, all 7 LEDs flash for a while and the LEDs that stay on will represent numbers between 1 and 6. This is a basic learning kit for electronic beginners. Basic soldering skill is enough to build the kit.

This kit is similar to an electronic dice kit from eBay. Check it out. 

Watch the video below to see all the assembly steps:

The video published below is documentation of good images. The images will help you assemble the kit easily.

You can see all the images below. All the images can be viewed on Flickr.

Download Jaycar’s Short Circuits Volume 1, 2 and 3:

Volume 1: https://www.buildcircuit.com/wp-content/uploads/2020/11/Short-Circuits-Volume-1.pdf

Volume 2: https://www.buildcircuit.com/wp-content/uploads/2020/11/Short-Circuits-Volume-2.pdf

Volume 3: https://www.buildcircuit.com/wp-content/uploads/2020/11/Short-Circuits-Volume-3.pdf

DIY KIT 66- Basic electronic dice with 7 LEDs

This is yet another CD4017 and NE555 based digital dice with 7 LEDs. When you press the tactile switch, the LEDs start flashing and stop with a pattern that represents a number between 1 to 6 like real dice. The display will always random.

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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 64- ClockIt digital clock DIY kit using Arduino

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This is a great kit to learn the basics of soldering. The Sparkfun ClockIt is a basic alarm clock with buzzer based on the ever-popular ATMega328. If you’re just learning how to solder, this kit should take you 15-20 minutes. If you’re a weathered pro at soldering, this is a great relaxing build that should take 5-10 minutes. (more…)

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