rfid
#RFID
#wireless
#RF communication
#tag reader
#identification
#proximity sensor
#contactless
#data transmission
#security
#access control
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A Low Power Wireless Audio Power Amplifier
A battery-powered portable unit suitable for all types of televisions. This low-cost project allows audio reproduction from a TV without disturbing others.
This battery-powered portable audio unit is designed to provide a convenient solution for reproducing television audio discreetly. The unit...
Wireless Fm Microphone
A simple FM wireless microphone utilizes a single BC183C transistor as an audio amplifier, with the option to substitute it with a 2N3565. The transistor Q1 functions as an oscillator that is frequency-modulated by the signal from Q1. Other transistors...
Security-door-ajar-alarm
The TL3019 device activates, or goes low, when a south pole of a magnet approaches the chip face. In this example, there are five doors, each equipped with a magnet embedded in its edge, with the south pole facing outward....
Wireless Color Sensor
Close to human perception and stable color sensing is a pervasive challenge encountered in various disciplines, such as machine vision for classification and recognition, as well as in intelligent systems like smart illumination systems in home or workplace environments. In...
Wireless mains voltage tester
This circuit is designed to test the presence of mains voltage without direct electrical contact with the mains line. The core component of this circuit is the CMOS IC CD4033, which features a five-stage decade Johnson counter and an output...
simple rf id reader module design
A coil of approximately 1 mH is utilized for both sides of the circuit. Given a chosen frequency of 125 kHz, the required capacitor value is calculated to be 1.62 nF, with a standard value of 1.5 nF selected. L1...
Wireless IR Headphones circuit
This wireless infrared (IR) headphones circuit project enables the transmission of audio signals through an infrared connection. The circuit consists of two main components: a transmitter and a receiver. Unlike radio frequency (RF) transmitters, both parts of this application must...
Wireless/Wii Hack for SNES and NES Controllers
The NES version of this modification closely resembles the SNES version, and it is advisable to review that article first for a general understanding of the assembly of these controllers. The primary component required is an original NES controller, which...
Park Aid
This circuit was designed to assist in parking a car near the garage wall while reversing. It includes a proximity sensor as part of the electronics project and circuit diagram.
The parking assistance circuit employs a proximity sensor to detect the...