Metal Detector Circuit using IC CS209A is a cool tool to find metal near by. It is used for security, treasure hunt and in industries. This article shows simple but strong circuit using one chip called CS209A. It is easy to make and works great to detect metal. We can find metal from few inches […]
Canary Bird Chirp Generator Circuit
Canary Bird Chirp Generator Circuit is fun and easy circuit. It make sound like real canary bird chirping. Works like audio oscillator to copy bird sound. Circuit is used in toys, sound gadgets or DIY projects. It runs on 9V battery so anyone can use it easily. Circuit Working: Parts List: Component Specification Quantity Resistors […]
Jet Engine Sound Generator Circuit using IC HT2844P
Jet Engine Sound Generator Circuit using IC HT2844P is fun and learning project. It makes jet engine sound using simple parts. It uses IC HT2844P sound chip to make real jet noise which is good for model fans, school work or DIY fun. Circuit needs 3V power and keeps under 3.3V or else circuit may break. […]
Subwoofer Low Pass Filter Circuit using Op-Amp TL062
Subwoofer Low Pass Filter Circuit using Op-Amp TL062 that let low sound go and block high sound. This circuit is good for subwoofers which gives deep and strong bass. The circuit uses TL062 op-amp which is active for low pass type. It cut high sound and keep bass clean and loud. TL062 IC from ST […]
Simple 12V DC Fan Speed Controller Circuit
Simple 12V DC Fan Speed Controller Circuit is an useful project in electronics. It changes fan speed by adjusting the voltage. This post talks about fan speed controller using IC LM2941. LM2941 is low dropout voltage regulator and it handles up to 1A current. It is good for cooling, temperature control and automation projects. In […]
Electronic Game Scorer Circuit
This circuit is called Electronic Game Scorer Circuit. It uses 555 timer IC and 74LS192 counter, 74LS247 decoder and 7-segment display. When player presses the button the circuit counts the score. Each press increases the number on display. So it is easy to keep score in game without writing. Circuit Working: Parts List: Component Value […]