Infrared wireless headphones amplifier circuit

"" "Browser amplifier" home "" Rangkaian infrared Wireless Headphone Amplifier

Rangkaian infrared Wireless Headphone Amplifier using the low cost project, can reproduce AUDIO of TV without disturbing anyone. It uses not all wire between TV and the helmet. Instead the pair of wires, it uses the invisible infrared light to transmit audio signals from TV to the helmet. Without the help of a wide range of lens 6 metres is possible. Scope can be extended using lenses and reflectors with sensors IR transmitters and receivers. IR Transmitter uses amplifier transistor two-storey driving two IR LEDs connected in series. An audio output transformer is used (on the back) to couple the Audio of TV output to the IR transmitter.

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Schematics Infrared Thermometer Module-MLX90614

The MLX90614 Infrared Thermometer Module is an intelligent non-contact temperature sensors with a 90° field of view and a serial interface for easy connection to host microcontrollers. The MLX90614 sensor is designed for non-contact temperature measurements of objects placed within the sensor’s cone of detection. The sensors is comprised of an integrated ASIC and infrared sensitive thermopile detector. The sensors communicates with an SX20AC/SS-G coprocessor over a digital SMBus, which Parallax has programmed to simplify an otherwise fairly complex communication protocol.

Features

• Outputs continuous data flow with an active alarm running in background
• 16-bit digital temperature output data, ranging from -70°C to 380°C
• Auto-baud detection (2400, 4800, 9600, 19.2K, 38.4K) for microcontroller-to-MLX90614 communications
• SIP module format fits easily in breadboards or through-hold prototype areas
• Multiple modules can be connected from a single I/O processor pin for serial data flow
• Module can act as a stand alone sensors for alarming control
• Sleep setting for low power consumption
• Starts up active without pre-programming using preset writeable defaults
• 90° Field Of View (10° FOV version available)

Infrared Thermometer: BASIC Stamp PIN Connections

With a temperature range of -70°C to 380°C, auto-baud detection and a programmable alarm setting, this module becomes very useful in many applications such as surface temperature measurement, human/animal presence detection or HVAC. Up to 100 modules can be connected on the same bus making multi-zone temperature measurement easy.

Source: MLX90614 infrared thermometer module

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