# ESP-01 doesn't start

**URL:** <https://wled.discourse.group/t/esp-01-doesnt-start/5089>\
**Category:** Questions\
**Created:** [March 20, 2022, 5:51pm UTC](https://wled.discourse.group/t/esp-01-doesnt-start/5089 "2022-03-20T17:51:11Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Sefan](https://avatars.discourse-cdn.com/v4/letter/s/ecb155/32.png) [@Sefan](https://wled.discourse.group/u/Sefan)\
**Post date:** [March 20, 2022, 5:51pm UTC](https://wled.discourse.group/t/esp-01-doesnt-start/5089/1 "2022-03-20T17:51:11Z")

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There are problems with my ESP-01. If i leave the data wire to the neopixel Stripes, the ESP starts. But if the wire ist connected, nothing starts!  
I have a resistor between the GPIO2 and the LEDs and a pullup between 3,3v and GPIO2.  
What else could i do?

Greetings from germany, Stefan

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**Author:** ![blazoncek](https://yyz2.discourse-cdn.com/free1/user_avatar/wled.discourse.group/blazoncek/32/1886_2.png) [@blazoncek](https://wled.discourse.group/u/blazoncek)\
**Post date:** [March 21, 2022, 7:09am UTC](https://wled.discourse.group/t/esp-01-doesnt-start/5089/2 "2022-03-21T07:09:26Z")

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Use 4k7 pull-up resistor on GPIO2. That may help.  
The other option is to use @srg74 [ESP01 shield](https://www.tindie.com/products/serg74/esp-01-wled-shield/).  
If the shipping cost from US is prohibitive I am able provide a few from EU.

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**Author:** ![Sefan](https://avatars.discourse-cdn.com/v4/letter/s/ecb155/32.png) [@Sefan](https://wled.discourse.group/u/Sefan)\
**Post date:** [March 21, 2022, 7:28am UTC](https://wled.discourse.group/t/esp-01-doesnt-start/5089/3 "2022-03-21T07:28:54Z")

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Thanks for your answer. I’ve used a 100k resistor, now it works with a 10k resistor.

Thanks a lot, Stefan