# The way how to use Arduino UNO R4 MINIMA's LOVE pin

**URL:** <https://forum.arduino.cc/t/the-way-how-to-use-arduino-uno-r4-minimas-love-pin/1142989>\
**Category:** UNO R4 Minima\
**Created:** [June 29, 2023, 4:50pm UTC](https://forum.arduino.cc/t/the-way-how-to-use-arduino-uno-r4-minimas-love-pin/1142989 "2023-06-29T16:50:30Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![dhksrl0508](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/dhksrl0508/32/1146334_2.png) [@dhksrl0508](https://forum.arduino.cc/u/dhksrl0508)\
**Post date:** [June 29, 2023, 4:50pm UTC](https://forum.arduino.cc/t/the-way-how-to-use-arduino-uno-r4-minimas-love-pin/1142989/1 "2023-06-29T16:50:31Z")

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the pin of 'LOVE' is P204.  
P204 was not implemented in pins\_arduino.h, but it is implemented in io layer (r-ioport.h).  
so, you can use it with io layer api.  
gist: [How to use Arduino UNO R4 MINIMA's LOVE Pin · GitHub](https://gist.github.com/varofla/7867ada08db70190413d2a070330acc1)  
video: [how to use LOVE pin on arduino R4 MINIMA - YouTube](https://www.youtube.com/watch?v=zH2bbQNgjyU)

```arduino
void setup() {
  // P204 -> PORT 2, PIN 4
  R_IOPORT_PinCfg(NULL, BSP_IO_PORT_02_PIN_04, IOPORT_CFG_PORT_DIRECTION_OUTPUT);
}

void loop() {
  R_IOPORT_PinWrite(NULL, BSP_IO_PORT_02_PIN_04, BSP_IO_LEVEL_HIGH);
  delay(100);
  R_IOPORT_PinWrite(NULL, BSP_IO_PORT_02_PIN_04, BSP_IO_LEVEL_LOW);
  delay(1000);
}

```

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<div class="post-metadata">

**Author:** ![trevormakes](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/trevormakes/32/957779_2.png) [@trevormakes](https://forum.arduino.cc/u/trevormakes)\
**Post date:** [June 29, 2023, 11:12pm UTC](https://forum.arduino.cc/t/the-way-how-to-use-arduino-uno-r4-minimas-love-pin/1142989/2 "2023-06-29T23:12:27Z")

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I'm just about to upload a video on this too, you beat me to it!

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<div class="post-metadata">

**Author:** ![trevormakes](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/trevormakes/32/957779_2.png) [@trevormakes](https://forum.arduino.cc/u/trevormakes)\
**Post date:** [June 30, 2023, 1:58am UTC](https://forum.arduino.cc/t/the-way-how-to-use-arduino-uno-r4-minimas-love-pin/1142989/3 "2023-06-30T01:58:23Z")

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I uploaded [my video here](https://www.youtube.com/watch?v=5cS-ShyYW_k). It's tied to instead P113 on the WiFi board. I think these may have been intended to work as capacitive touch pads (CTSU pins T00 on Minima and T27 on WiFi), but I haven't been able to figure out the CTSU yet.

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**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.arduino.cc/u/awneil)\
**Post date:** [June 30, 2023, 12:46pm UTC](https://forum.arduino.cc/t/the-way-how-to-use-arduino-uno-r4-minimas-love-pin/1142989/4 "2023-06-30T12:46:53Z")

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"Love Pin" ?!?!

😳 😳 😳

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**Author:** ![dogware202](https://avatars.discourse-cdn.com/v4/letter/d/a587f6/32.png) [@dogware202](https://forum.arduino.cc/u/dogware202)\
**Post date:** [June 30, 2023, 1:33pm UTC](https://forum.arduino.cc/t/the-way-how-to-use-arduino-uno-r4-minimas-love-pin/1142989/5 "2023-06-30T13:33:05Z")

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There is a heart shaped pin (covered in solder) on the back of both new R4 boards.

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<div class="post-metadata">

**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.arduino.cc/u/awneil)\
**Post date:** [June 30, 2023, 1:44pm UTC](https://forum.arduino.cc/t/the-way-how-to-use-arduino-uno-r4-minimas-love-pin/1142989/6 "2023-06-30T13:44:57Z")

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Some sort of PCB designer's joke? An "Easter Egg"?

 ![image](https://europe1.discourse-cdn.com/arduino/original/4X/b/7/b/b7be575ca1b7ed4a503dfe808fc7bb105a3fcf66.png)