Learn on the fly : Repurpose old TV remote as a universal remote control- [parasite design] [chip in the middle modifier on IR signals]
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SIMPLE ROBOT】38khz MCU learning board IR remote control Infrared decoder for protocol remote control For .MP3 .MP4|mp3 decoder|decoder mp4mp3 decoder board - AliExpress
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new, 10pcs 38khz MCU learning board IR remote control Infrared decoder for NEC protocol remote control|ir infrared|infrared irdecoder board - AliExpress
![Understanding IR Remote Protocols to build your own IR Signal Decoder using TSOP and PIC Microcontroller Understanding IR Remote Protocols to build your own IR Signal Decoder using TSOP and PIC Microcontroller](https://circuitdigest.com/sites/default/files/inlineimages/u3/NEC-Remote-Protocol.png)