Difference between revisions of "Infrared transmission"

Outline

The Microduino IR LED can emit infrared signals just like a remote control. Couple this with an infrared receiver and you can control projects from a distance. The maximum transmission distance for the emitter is 10 meters.

Specification

• Electrical Specifications
  • Operation Voltage: 3.3V~5V
  • This is an Output Device
• Technical Specifications
  • Emitting Distance: 10 meters
  • Emitting Angle: 25 degrees
  • Wavelength: 940nm
• Dimensions
  • LED: 5mm
  • Board: 10mm x 20mm
  • Connector: 4-Pin, 1.27mm-pitch
• Connector Interface
  • Pins: D6 (on Hub), VCC (power), GND (ground) and NC (Not Connected)
  • NOTE: To emit at the proper frequency for remote control (38KHz), the sensor must be connected to pin D6 on the Sensor Hub

Development

Equipment

Preparation

Setup 1: Connect the IR transmitter's interface with the Hub's D6 digital port.

• Setup 2: Connect the core, Hub and IR transmitter to a computer with a USB cable.

Debugging

• Open " IRsendDemo " program in the libraries.

• Select the right board and COM port, compile and download. You can refer to AVR Core：Getting started

• include <IRremote.h> - Imports the IRremote library and allows you to use all functions.
• IRsend irsend; - Declares an object for the infrared transmitter to use IR functions.
• irsend.sendSony(0xa90, 12); - Sends an infrared code using a Sony remote protocol.
• Once you open the Serial Monitor, you can input any values into the console. The LED on the transmitter will blink once the infrared signal has been sent.