# Using EEPROM on Teensyduino or TeeOnArdu (Leonardo)

**URL:** <https://forum.arduino.cc/t/using-eeprom-on-teensyduino-or-teeonardu-leonardo/383069>\
**Category:** 3rd Party Boards\
**Created:** [April 30, 2016, 2:29am UTC](https://forum.arduino.cc/t/using-eeprom-on-teensyduino-or-teeonardu-leonardo/383069 "2016-04-30T02:29:51Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![monti73](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/monti73/32/215521_2.png) [@monti73](https://forum.arduino.cc/u/monti73)\
**Post date:** [April 30, 2016, 2:29am UTC](https://forum.arduino.cc/t/using-eeprom-on-teensyduino-or-teeonardu-leonardo/383069/1 "2016-04-30T02:29:51Z")

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Hi to everyone. I've made a MIDI controller using a Leonardo whith another bootloader following this: [GitHub - fricklr/TeeOnArdu](https://github.com/fricklr/TeeOnArdu)  
In the board select menu I select "TeeOnArdu".  
Everything works OK but now I'm trying to use the EEPROM library and it seems to be disabled when I select this board. If I go and choose Leonardo as the board, the include-\>EEPROM option appears again.

Is there a way to use the EEPROM library when using the Leonardo as a TeeOnArdu? OR using EEPROM without library? (I believe this would be too hard anyway)

Thanks in advance!

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**Author:** ![MalharD](https://avatars.discourse-cdn.com/v4/letter/m/f475e1/32.png) [@MalharD](https://forum.arduino.cc/u/MalharD)\
**Post date:** [May 1, 2016, 9:21am UTC](https://forum.arduino.cc/t/using-eeprom-on-teensyduino-or-teeonardu-leonardo/383069/2 "2016-05-01T09:21:51Z")

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type #include \<EEPROM.h\>

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**Author:** ![wbajzek](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/wbajzek/32/1168091_2.png) [@wbajzek](https://forum.arduino.cc/u/wbajzek)\
**Post date:** [July 6, 2016, 11:58pm UTC](https://forum.arduino.cc/t/using-eeprom-on-teensyduino-or-teeonardu-leonardo/383069/3 "2016-07-06T23:58:34Z")

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> MalharD:  
> type #include \<EEPROM.h\>

I am having the same issue as the original poster, and that didn't work. The EEPROM library seems to be inaccessible when using this type of board.

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**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, 5:04pm UTC](https://forum.arduino.cc/t/using-eeprom-on-teensyduino-or-teeonardu-leonardo/383069/4 "2021-05-06T17:04:56Z")

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