User manual

Connecting the IR receiver is very simple. Connect the left-hand pin to any digital input pin on your

Arduino. In our examples we will use pin 11. Connect the center pin to ground and the right-hand

pin to +5v.

Note that this device has a bandpass filter tuned to 38 kHz which is the typical frequency for most

protocols. However some protocols use frequencies from 36 kHz all the way up to 57 kHz. The filter

however is not extremely specific and we have had good success receiving anywhere from 36-40

kHz using a 38 kHz receiver. The Panasonic_Old protocol however uses 56 kHz. The

TSOP38238 sold by Adafruit has difficulty decoding that frequency. I have however had good

success with the receiver sold by Radio Shack at 56 kHz even though it is a 38 kHz device. Radio

Shock did not list a part number but we believe it to be a TSOP4438. Sadly that may not be an

option anymore :-(

These devices are made by Vishay and come in a variety of package styles, frequencies, and AGC

methods. If the Adafruit device does not work for you and you need 56 kHz you can refer to the

following guide.