Infrared Remote Control Decoder & Switcher Board

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Infrared Remote Control Decoder & Switcher Board

Post by » Wed Jun 02, 2021 10:18 pm

Infrared remote controllers are everywhere around us. The majority of home appliances are controlled using infrared remote controls. In this article/video, we learn to build a device that can decode (almost) any IR remote control and use the instructions to switch the relays (loads). So we can use this feature in a variety of applications without buying a new IR remote control and expensive hardware, such as turning ON/OFF the lights, opening/closing the curtains, ... etc. I have used an ATTiny85 microcontroller as the heart of the circuit. The device can record up to three IR codes in the EEPROM memory and switch 3 separate devices. Each relay can handle the currents up to 10A. The load switching mechanism (momentary ON/OFF, toggling, .. etc) can be programmed by the user.

I used Altium Designer 21.4.1 and the SamacSys component libraries (SamacSys Altium Plugin) to design the Schematic and PCB. I also used the Siglent SDS2102X Plus/SDS1104X-E to analyze the IR signals.

The device works stable and reacts well to the transmitted IR signals. So let’s get started and build this puppy!

I recommend redpitaya team to include the IR decoding package in the oscilloscope as IR is widely used in a variety of controlling applications.




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