# Platformio compiling help

**URL:** <https://wled.discourse.group/t/platformio-compiling-help/1198>\
**Category:** Issues\
**Created:** [November 1, 2020, 12:25pm UTC](https://wled.discourse.group/t/platformio-compiling-help/1198 "2020-11-01T12:25:41Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![grumpazoid](https://avatars.discourse-cdn.com/v4/letter/g/4da419/32.png) [@grumpazoid](https://wled.discourse.group/u/grumpazoid)\
**Post date:** [November 1, 2020, 12:25pm UTC](https://wled.discourse.group/t/platformio-compiling-help/1198/1 "2020-11-01T12:25:41Z")

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Hi. Have been using the WLED pre compiled binaries for a while but I though I’d have a go at compiling to get the latest features.

In platformio.ini I had to comment out ;default\_envs = travis\_esp8266, travis\_esp32 otherwise I had a npm error.

I use wemos d1 mini’s so I uncommented default\_envs = d1\_mini.

However it seems to be compiling for every version of board - still going as I type.

What did I do wrong?

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**Author:** ![Aircoookie](https://yyz2.discourse-cdn.com/free1/user_avatar/wled.discourse.group/aircoookie/32/2_2.png) [@Aircoookie](https://wled.discourse.group/u/Aircoookie)\
**Post date:** [November 1, 2020, 12:39pm UTC](https://wled.discourse.group/t/platformio-compiling-help/1198/2 "2020-11-01T12:39:03Z")

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Hi! 🙂  
There is a semicolon and space in front of every `default_envs` line. Perhaps the space is still there, which will lead to PIO ignoring the line

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**Author:** ![pille](https://yyz2.discourse-cdn.com/free1/user_avatar/wled.discourse.group/pille/32/100_2.png) [@pille](https://wled.discourse.group/u/pille)\
**Post date:** [November 1, 2020, 1:11pm UTC](https://wled.discourse.group/t/platformio-compiling-help/1198/3 "2020-11-01T13:11:36Z")

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you can also limit compilation to an environment: `platformio run -e d1_mini`

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**Author:** ![grumpazoid](https://avatars.discourse-cdn.com/v4/letter/g/4da419/32.png) [@grumpazoid](https://wled.discourse.group/u/grumpazoid)\
**Post date:** [November 1, 2020, 2:01pm UTC](https://wled.discourse.group/t/platformio-compiling-help/1198/4 "2020-11-01T14:01:33Z")

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Thanks for the replies. I will try those suggestions next time - You can probably tell I am a beginner with platformio.

So I ended up with many binaries but the Wemos D1 mini one worked perfectly. Now my LED turns off.  
Big thanks to all.  
G