This Long Range FM Transmitter Circuit (2km) send voice or music on FM radio, as it can cover up to 2 km range with good antenna. Also, it uses small microphone to take sound and then circuit make signal; then signal goes to antenna and any FM radio can catch it. Finally, it runs on […]
Transmitter Circuit
Spy Phone Bug Transmitter Circuit
This circuit for Spy Phone Bug Transmitter Circuit is like small secret listening thing; It can listen and record phone talk which people do not know. Also, this type of device is called a bug or transmitter because it can spy on peoples conversations, so people should not use it for illegal or unethical purposes. […]
Simple RF Field Strength Meter Circuit
To begin with, this Simple RF Field Strength Meter Circuit show how to make device to measure radio wave! Radio and mobile phone both use radio wave and this signal we cannot see, also this thing are helpful for radio fans, engineers and new people. Also, they can check how strong signal is in different […]
Infrared Wireless Headphone Circuit
Anyone can make its own wireless headphones using this Infrared Wireless Headphone Circuit, as this circuit sends sound by using infrared light but not with wire. So we can move around easily while listening and we can also control it from far like change volume or songs. What is a Infrared Headphones Receiver Circuit: The […]
Simple Mobile Phone Signal Jammer Circuit
Simple Mobile Phone Signal Jammer Circuit is device that stop signal between phone and tower, it does this by using same radio frequency like phone and to make communication not to work. Also, this small circuit can block call and message on 3G, 4G and also old network. Here, three main part inside jammer are: […]
Simple Li-Fi Transmitter Receiver Circuit
Think internet is like a light and not a radio wave, then this Simple Li-Fi Transmitter Receiver Circuit do the same thing like that. This article tell how to make simple Li-Fi system to send and get data using light. Here, transmitter uses bright LED and normal transistor to send signal and receiver catch signal […]