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Hobby Circuits

Simple USB Lamp Circuit

Last updated on 11 May 2026 by Admin-Lavi Leave a Comment

This small and Simple USB Lamp Circuit shows how to make an easy night light using a USB port from a computer or laptop, and it only needs a few parts such as: Also, this circuit is good when we need little more light in dark place or when power goes OFF. Circuit Working: Parts […]

Filed Under: DIY Projects, Hobby Circuits, LED and Lamps, Mini Projects

Seven Segment Counter Circuit

Last updated on 11 May 2026 by Admin-Lavi Leave a Comment

Seven Segment Counter Circuit is one simple circuit.; which count numbers and show on seven segment display. Also, when we press button, number goes up by one and the circuit is very easy to make and good for learning how counting works in electronics. What is a Seven Segment Counter Circuit: Seven segment counter circuit […]

Filed Under: 555 Timer Projects, DIY Projects, Hobby Circuits, Indicator Circuits, Meters and Testers, Timer Circuits

Simple Room Ionizer Circuit

Last updated on 11 May 2026 by Admin-Lavi Leave a Comment

In this Simple Room Ionizer Circuit, a machine called a room ionizer helps clean the air in a room and it also creates small electric particles called ions. Furthermore, these ions catch smoke, dust and bad things in air and ionizer use special electric way to make these ions. Like when we press one side […]

Filed Under: DIY Projects, High Voltage, Hobby Circuits, Mini Projects

Simple Passive Crossover Network Circuit for Loudspeakers

Last updated on 11 May 2026 by Admin-Lavi Leave a Comment

Think like music conductor who tell each instrument when to play. In a speaker system, a Simple Passive Crossover Network Circuit for Loudspeakers does the same thing but with sound. Also, normal speakers consist of many parts, with each part handling a different sound range, rather than just one component. Woofer make big boom sound, […]

Filed Under: Amplifier Circuits, Audio Circuits, DIY Projects, Hobby Circuits, Mini Projects

Heads or Tails Decision Maker Circuit

Last updated on 9 May 2026 by Admin-Lavi Leave a Comment

To begin with, this easy Heads or Tails Decision Maker Circuit show how to make fun coin flipper using electric, for example like when we flip real coin but here we press a button and small chip inside do fast thinking and then say “heads” or “tails” very quickly The circuit also uses logic parts […]

Filed Under: DIY Projects, Hobby Circuits, Indicator Circuits, LED and Lamps

Simple Musical Doorbell Circuit using IC UM66

Last updated on 8 May 2026 by Admin-Lavi Leave a Comment

Do anyone want a special doorbell? not just make buzzing sound but this one plays small music tune as well! The Simple Musical Doorbell Circuit using the UM66 IC is very easy to build and requires only a few components,. However, the main part of this circuit is a special chip called the UM66T, which […]

Filed Under: Audio Circuits, DIY Projects, Hobby Circuits, Mini Projects

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