# Interrupts in new Arduino Uno REV4 **URL:** \ **Category:** Programming\ **Created:** [July 24, 2023, 8:03am UTC](https://forum.arduino.cc/t/interrupts-in-new-arduino-uno-rev4/1151146 "2023-07-24T08:03:36Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Dziubym](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/dziubym/32/688676_2.png) [@Dziubym](https://forum.arduino.cc/u/Dziubym)\ **Post date:** [July 24, 2023, 8:03am UTC](https://forum.arduino.cc/t/interrupts-in-new-arduino-uno-rev4/1151146/1 "2023-07-24T08:03:36Z")
Just received the Arduino REV4 board. Will start playing with it today. I have a question about interrupts on this board. before I bought it I read somwhere that it provides more interrupts then just on pin D2 and D3. But now I cannot find that information anymore. I would love for this board to have more interrupt pins like e.g. Arduino Mega. Anybody tested it? ---
**Author:** ![J-M-L](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/j-m-l/32/766245_2.png) [@J-M-L](https://forum.arduino.cc/u/J-M-L)\ **Post date:** [July 24, 2023, 8:53am UTC](https://forum.arduino.cc/t/interrupts-in-new-arduino-uno-rev4/1151146/2 "2023-07-24T08:53:49Z")
may be it was > **[Arduino UNO R4 Minima Cheat Sheet | Arduino Documentation](https://docs.arduino.cc/tutorials/uno-r4-minima/cheat-sheet)** > > Learn how to set up the UNO R4 Minima, the fourth revision of our most popular and important development board. Also There is a good article on the timers for the arduino-uno-r4 > **[Under the Hood: Arduino UNO R4 - Timers - Phil Schatzmann](https://www.pschatzmann.ch/home/2023/07/01/under-the-hood-arduino-uno-r4-timers/)** > > I was wondering how to use the timers in the new Arduino UNO R4. Unfortunately I did not find any documentation, so I decided to document my findings here. The UNO R4 has two timer Read more… ---
**Author:** ![J-M-L](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/j-m-l/32/766245_2.png) [@J-M-L](https://forum.arduino.cc/u/J-M-L)\ **Post date:** [July 24, 2023, 9:02am UTC](https://forum.arduino.cc/t/interrupts-in-new-arduino-uno-rev4/1151146/3 "2023-07-24T09:02:21Z")
also this discussion > [@Using Encoder library, what interrupt pins on Uno R4 Minima?](https://forum.arduino.cc/t/using-encoder-library-what-interrupt-pins-on-uno-r4-minima/1143957): > > Hi, I am trying to use the Encoder library (version 1.4.2) on my new Arduino R4 Minima board. The library needs to know the interrupt pins on this MCU, these are not in interrupt\_pins.h. Getting this error message on compilation: In file included from /Users/koen/Documents/Arduino/libraries/Encoder/Encoder.h:46:0, from /Users/koen/Documents/Arduino/FM Radio 6.1/FM\_Radio\_6.1/FM\_Radio\_6.1.ino:202: /Users/koen/Documents/Arduino/libraries/Encoder/utility/interrupt\_pins.h:202:2: error: #error "I… ---
**Author:** ![Dziubym](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/dziubym/32/688676_2.png) [@Dziubym](https://forum.arduino.cc/u/Dziubym)\ **Post date:** [July 24, 2023, 9:57am UTC](https://forum.arduino.cc/t/interrupts-in-new-arduino-uno-rev4/1151146/4 "2023-07-24T09:57:09Z")
☹ that does not answer my question. The two articles have no interrupts mentioned and the post basically asks the same question. Are more digital pins interrup enabled on REV4 board?☹ ---
**Author:** ![J-M-L](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/j-m-l/32/766245_2.png) [@J-M-L](https://forum.arduino.cc/u/J-M-L)\ **Post date:** [July 24, 2023, 10:32am UTC](https://forum.arduino.cc/t/interrupts-in-new-arduino-uno-rev4/1151146/5 "2023-07-24T10:32:39Z")
> [@Dziubym](#): > > The two articles have no interrupts mentioned well article 1 shows this ![image](https://europe1.discourse-cdn.com/arduino/original/4X/6/b/a/6ba6ca9f6c190643c595aed5616795e2209ebf8f.png) article 2 states ![image](https://europe1.discourse-cdn.com/arduino/original/4X/d/f/c/dfc9b477f296cfb4c7e72e0ffb3ad9c5cd0d68de.png) the third link (if you read the details) brings you to this mention ![image](https://europe1.discourse-cdn.com/arduino/original/4X/5/a/3/5a343012399b80571828ada0b401d1c84fdc13d5.png) So I thought the three links were meaningful. But it's OK if you think otherwise. good luck with your project ---
**Author:** ![Dziubym](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/dziubym/32/688676_2.png) [@Dziubym](https://forum.arduino.cc/u/Dziubym)\ **Post date:** [July 24, 2023, 12:05pm UTC](https://forum.arduino.cc/t/interrupts-in-new-arduino-uno-rev4/1151146/6 "2023-07-24T12:05:48Z")
My bad. I was doing few things at the same time and I scanned those documments briefly and could not find it. Thank you for your feedback ---
**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:** [January 20, 2024, 12:06pm UTC](https://forum.arduino.cc/t/interrupts-in-new-arduino-uno-rev4/1151146/7 "2024-01-20T12:06:07Z")
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