# KY-005 needs pin 3, my ESP32 doesn't have one **URL:** \ **Category:** Sensors\ **Created:** [September 13, 2020, 9:16am UTC](https://forum.arduino.cc/t/ky-005-needs-pin-3-my-esp32-doesnt-have-one/674326 "2020-09-13T09:16:26Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![stephan2307](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/stephan2307/32/327632_2.png) [@stephan2307](https://forum.arduino.cc/u/stephan2307)\ **Post date:** [September 13, 2020, 9:16am UTC](https://forum.arduino.cc/t/ky-005-needs-pin-3-my-esp32-doesnt-have-one/674326/1 "2020-09-13T09:16:26Z")
Hi, Playing around with IR sending and receiving. Got myself the KY-005 IR board and it turns out that in order to transmit signals, the IRRemote library requires you to connect the signal pin to pin 3 on your Arduino. I got an esp32 and it doesn't show any pin 3. What can I do now? ( Link to a picture of my board as I couldnt upload it [https://photos.app.goo.gl/kfPAcR33cKxEkYYx6](https://photos.app.goo.gl/kfPAcR33cKxEkYYx6) ) Thanks for any help. ---
**Author:** ![horace](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/horace/32/1014299_2.png) [@horace](https://forum.arduino.cc/u/horace)\ **Post date:** [September 13, 2020, 9:45am UTC](https://forum.arduino.cc/t/ky-005-needs-pin-3-my-esp32-doesnt-have-one/674326/2 "2020-09-13T09:45:53Z")
the pinout diagram for your ESP32 may help [ESP32 various pinouts](https://www.mischianti.org/2020/05/30/esp32-pinout-specs-and-arduino-ide-configuration-part-1/) ---
**Author:** ![system](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/system/32/1140315_2.png) [@system](https://forum.arduino.cc/u/system)\ **Post date:** [May 6, 2021, 10:30am UTC](https://forum.arduino.cc/t/ky-005-needs-pin-3-my-esp32-doesnt-have-one/674326/3 "2021-05-06T10:30:28Z")
Closed on May 6, 2021, 10:30am UTC