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infrared - IR transmitter connected to phone audio jack ...
https://electronics.stackexchange.com/questions/150602/ir-transmitter-connected-to-phone-audio-jack
I took an IR LED transmitter, and soldered it to a mono audio jack (positive pin to the left channel, negative to mass). Now, the LED is quite small, and I'm pretty sure that the phone audio output voltage is enough to power it on. If I connect a multimeter to the jack and put it on the diode check mode, the LED turns on (I can see it glow ...
IR Based Wireless Audio Transmitter and Receiver : 6 …
https://www.instructables.com/IR-Based-Wireless-Audio-Transmitter-and-Receiver/
The Audio signal will be transmitted through an IR LED from the transmitter circuit; the IR signals will be then received by a photodiode which will be placed on the receiver circuit. The audio signal thus received by the photodiode will be very weak and hence it will be amplified by an LM386 amplifier circuit and finally played on a speaker.
Amazon.com: ir transmitter
https://www.amazon.com/ir-transmitter/s?k=ir+transmitter
infrared - IRDA Through Audio Jack - Electrical ...
https://electronics.stackexchange.com/questions/85721/irda-through-audio-jack
The IR transceiver would be as minimal as possible: just an IR LED and IR receiver soldered to a typical 4-conductor 1/8" audio plug. The basic idea is that the app would read/write to the audio port to control the IR transceiver to talk to another IrDA device. We're assuming the IrDA protocol stack is implemented in the app.
DIY audio jack ir blaster - FzWARE
https://fzware.com/diy-audio-jack-ir-blaster.html
DIY audio jack ir blaster This IR Blaster works with iOS App EzRemote. Theory. The process is based on the fact that the IR key codes are series of square waves at 38kHz of main frequency. The duration in time of the square waves ON and OFF defines the codification of a specific key. By considering a common audio stereo channel (2 mono), it can ...
Amazon.com: 3m IR Receiver-3.5mm Plug 12V-Infrared …
https://www.amazon.com/Receiver-3-5mm-12V-Infrared-System-Control-Extender/dp/B008O32IWI
3m IR Receiver - Wide Band - 3.5mm Plug 12v This IR receiver can be used with an IR system to relay IR commands picked up from a remote control to operate AV equipment in another room or AV cupboard. Features: CFL Friendly - This IR receiver works in most lighting environments, even areas with compact fluorescent lighting (CFL), e.g. energy saving bulbs.
How to connect an IR receiver to an audio card
https://www.lirc.org/ir-audio.html
It uses just one piece: a IR module (any, more details on them can be found on lirc home page) and a (very) optional diode. The schematics. The basic idea is that the output of the IR module (somewhere in the range from 0 to ~3-4V) can be limited by using the attenuator built into every audio-card (also known as "mixer sliders").
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