Many times people make choice by flipping coin, but this method is not always fair but sometimes it give biased result and therefore, to fix this we can use Electronic Coin Toss Circuit using IC 555 and JK Flip-Flop. It works like real coin flip using digital technology and LED. This circuit has two main […]
Hobby Circuits
Metal Detector Circuit using IC CS209A
The Metal Detector Circuit using the CS209A IC is a useful tool for detecting nearby metal objects. People use it for security screening, treasure hunting and industrial applications, also this article explains a simple yet effective metal detector circuit based on a single CS209A chip. The circuit is easy to build and provides reliable metal […]
Canary Bird Chirp Generator Circuit
Canary Bird Chirp Generator Circuit is fun and easy circuit, it make sound like real canary bird chirping and it works like audio oscillator to copy bird sound. In addition, toys, sound gadgets and DIY projects use this circuit to generate sound effects and, also, a 9 V battery powers the circuit, making it easy […]
Jet Engine Sound Generator Circuit using IC HT2844P
Jet Engine Sound Generator Circuit using IC HT2844P is fun learning project and it makes jet engine sound using simple parts. Furthermore, it uses IC HT2844P sound chip to make real jet noise which is good for model fans, school work or DIY fun; also circuit needs 3V power and keeps under 3.3V or else circuit […]
Electronic Game Scorer Circuit
To begin with, we call this circuit an Electronic Game Scorer Circuit because it uses a 555 timer IC, a 74LS192 counter, a 74LS247 decoder, and a 7-segment display. When player presses the button the circuit counts the score and each press increases the number on display, so it is easy to keep score in […]
Simple 0-9 Counter Circuit with 7-Segment Display
A Simple 0-9 Counter Circuit with 7-Segment Display shows numbers from 0 to 9 and serves digital counters, clocks and measuring instruments. Also, main parts of this circuit are 7490 Decade Counter IC, 7446 BCD to 7-segment Driver IC and it works with Common Anode 7-segment display with all LED positives joined. Moreover, a 5 […]