A digital dice using 74LS47, 74LS90 and seven segment display

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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.

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DIY Arduino Kit with ZIF socket

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It is just another ‘build your own Arduino’ project. BuildCircuit has worked on similar projects before. The most popular project is a DIY Arduino kit. The DIY Arduino looks similar to the real Arduino boards and uses an FTDI basic programmer to program the chips.

The kit that we are going to work on this article is also a DIY Arduino. It comes with a zero insertion force (ZIF) IC socket. You can simply insert an Arduino chip and program it. The board has a header to connect an FTDI basic module that can be used to program the Arduino chip.

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A basic multivibrator using 2 transistors

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This is a simple multivibrator kit using two transistors(S9014), two capacitors, and a few other components. The working principle of a multivibrator has been explained in previous posts also. You can read about the multivibrator circuit on this page.

The two LEDs on the PCB flash alternately, that’s all you see on the circuit board. It is a very basic electronic kit for electronics beginners.

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