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All devices that are designed to send and receive signals from two distant set ups for implementing an intended operation without using physical wires or contact across the two installations are called wireless systems, and the involved gadgets are called wireless devices.
Under this category you will find some amazing related circuits mainly based on FM wireless transission.
FM stands for frequency modulation and today most of the wireless based devices are controlled using FM signals at different frequency levels.
Here you will comes across a vast range of designs starting from the most basic ones suitable for new hobbyists to the relatively complex ones designed for the engineering students and experts in the field.
You will find some interesting FM remote control circuits which could be used for remotely operating an intended job such as doors locks and safes, you will also discover a few sophisticated GSM based highly advanced remote controlled systems working through cellphone networks.
The 10 km range, 27 MHz transmitter circuit explained here uses citizen’s band which consists of 2 main types of users: radio control (R/C) modellists and users of low-power FM transceivers for local communication. However, here it is designed and intended for testing antennas and aligning receivers. It is actually an AM/FM quartz controlled for … Read more27 MHz Transmitter Circuit – 10 Km Range
This robotic arm circuit which can be also implemented like a robotic crane, works using 6 servo motors and can be controlled through a microcontroller remote control, using an Arduino based 2.4 GHz communication link. Main Features When you are building something as sophisticated as a robotic arm, it must look modern and must include many … Read moreHow to Make a Wireless Robotic Arm using Arduino
We all use remote control handsets for controlling various household devices such as TV, AC, Music systems, curtains etc, and sometimes we seem to have problems with these devices, or even a newly purchased remote controller unit occasionally seem to malfunction, and identifying the issue becomes quite difficult for us. This simple 2 transistor circuit … Read moreTV Remote Control Tester Circuit
In this post we will learn how to increase or extend the range of an ordinary infra red or IR remote control through a 433MHz RF remote control system. IR Range Extender Concept The idea of this circuit is to feed the IR data from an IR transmitter into the transmitter input of an RF … Read moreMake this IR Remote Control Range Extender Circuit
In this post we are going to construct a car robot which can be controlled using a joystick on 2.4 GHz wireless communication link. The proposed project is not only made as a RC car, but you can add your projects such as surveillance camera etc. on the car. Overview The project is divided in … Read moreJoystick Controlled 2.4 GHz RC Car Using Arduino
In this post we are going to construct a GSM based car security system using Arduino, which can lock and unlock car’s ignition system and central lock by sending a password SMS to car from your cellphone By Arduino Guru Car theft can be a heart break; it feels like your loved one got kidnapped. … Read moreGSM Car Ignition and Central Lock Circuit Using Arduino