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Newly Updated Circuit Projects:

Wireless Home theater Circuit using Bluetooth Headset

Last Updated on June 26, 2019 by Swagatam 22 Comments

speaker visible

In this post I have explained a 200 + 200 watt wireless home theater circuit using a class D amplifier and a Bluetooth headset as the wireless module. The idea was requested by Mr. Sudipta Mandal. Technical Specifications I want to make my home theater wireless. My home theater model is Sony SRS-D9 2.1 channel. […]

Filed Under: Wireless Circuits Tagged With: Bluetooth, Headset, Home, Theater, Wireless

Modifying a Bluetooth Headset Device

Last Updated on May 26, 2019 by Swagatam 27 Comments

speaker visible 1

In the previous post I explained regarding the internal circuitry of a typical Bluetooth headset, in this post we’ll see how a Bluetooth headset unit can be modified or “hacked” in order to make it work for other personalized applications. In the previous article I have explained how to break open a Bluetooth headset device and […]

Filed Under: Wireless Circuits Tagged With: Bluetooth, device, Headset, Modifying

What’s Inside a Bluetooth Headset

Last Updated on August 6, 2018 by Swagatam 5 Comments

Bluetooth headset

In this post I have explained what’s inside a Bluetooth headset gadget and also know how to hack it for using it for other useful personalized applications. The world is going digital at a rapid pace and advanced concepts such as Bluetooth are quickly replacing the other traditional form of technologies. What’s Bluetooth What’s Bluetooth? […]

Filed Under: Wireless Circuits Tagged With: Bluetooth, Headset, Inside

5kva Ferrite Core Inverter Circuit – Full Working Diagram with Calculation Details

Last Updated on August 25, 2020 by Swagatam 468 Comments

5kva inverter circuit

In this post I have explained the construction of a 5000 watt inverter circuit which incorporates a ferrite core transformer and therefore is hugely compact than the conventional iron core counterparts. Block Diagram Please note you can convert this ferrite core inverter to any desired wattage, right from 100 watt to 5 kva or as […]

Filed Under: Inverter Circuits Tagged With: 5kva, Core, Ferrite, Full, Inverter, Working

Playing a Melody Using Arduino

Last Updated on May 15, 2026 by Swagatam 2 Comments

speaker schem

In this Arduino tutorial we will learn how to execute the tone() command for producing musical notes. The configuration will play a tiny musical tone that could be familiar to you.     Required Hardware for the Project Arduino BoardLoud speaker – 8 Ohm 1 inchResistor – 100 ohmsHook-up wires Procedure: It’s rather too straightforward […]

Filed Under: Arduino Projects, Audio and Amplifier Projects Tagged With: Arduino, function, Melody, Playing, Tone

Making a Wireless Doorbell Circuit

Last Updated on January 4, 2020 by Swagatam 27 Comments

wireless doorbell transmitter circuit

Today the traditional wired type of doorbells are gradually getting obsolete and are being replaced by the advanced wireless type of doorbells that are easier to install due to their hassle free set-ups. A simple wireless doorbell circuit is discussed in the following post which can be constructed at home. Written and Submitted By: Mantra […]

Filed Under: Wireless Circuits Tagged With: Doorbell, Making, Wireless

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