Adafruit
Adafruit Infrared IR Remote Receiver - STEMMA JST PH 2mm
· MPN: ADA5939
The Adafruit Infrared IR Remote Receiver is a sensitive, wide-range 38 kHz IR receiver board with two selectable sensor orientations — one vertical and one h...
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The Adafruit Infrared IR Remote Receiver is a sensitive, wide-range 38 kHz IR receiver board with two selectable sensor orientations — one vertical and one horizontal. A slide switch lets you choose which sensor to read from, making it easy to mount in any position within your enclosure or project.
Using a STEMMA JST PH 2 mm cable, you can wire this board without any soldering. Point any standard 38 kHz IR remote at the sensors, and the demodulated signal is output to your microcontroller for decoding. Green power and red signal LEDs provide visual confirmation that the board is powered and receiving IR signals.
Key Features
- Dual IR Receiver Sensors – Vertical and horizontal 38 kHz receivers with slide switch selection
- STEMMA JST PH 2 mm Connector – Solderless 3-pin connection for power, ground, and signal
- 3V – 5V Compatible – Works with a wide range of microcontrollers
- Demodulated Signal Output – Clean envelope output ready for microcontroller decoding
- Status LEDs – Green power LED and red signal LED for visual feedback
- Independent Sensor Pads – Optional solder pads to read both sensors independently
- Mounting Holes – Easy to mount in enclosures and on devices
- Breadboard Option – 0.1" header pads for soldered breadboard connections
Ideal For
- IR remote control receivers for home automation
- Media player and appliance remote control projects
- Enclosure-mounted IR receiver installations
- Arduino and Raspberry Pi IR decoding projects
Package Contents
- 1× Adafruit Infrared IR Remote Receiver Board (assembled and tested)
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- 38 kHz IR
- Infrared light that is switched on and off 38,000 times per second, a common carrier frequency used by IR remotes and beam sensors. Matching this frequency matters because the receiver is tuned for it and will ignore much of the steady or random infrared light in the environment.
- JST PH
- A small keyed plug-and-socket connector with 2 mm pin spacing, often used for low-power electronics connections. You need the correct JST PH cable, and its current rating limits how much power should be passed through it.
- LED
- A light-emitting diode (LED) is a small electronic component that emits light when current flows through it in the correct direction. Because it only conducts one way, its polarity matters, and a through-hole LED must be soldered the correct way around to light up.
- microcontroller
- A microcontroller is a small computer on a single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
- pH
- A measure of how acidic or alkaline a liquid is, on a scale where 7 is neutral. For a water monitoring kit, pH tells you about water chemistry and whether the included probe matches the range and accuracy your project needs.
- STEMMA
- A plug-and-cable connection system used on some maker electronics boards to make wiring simpler. If a product uses STEMMA, you need the matching cable or connector type to plug it in without soldering.
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