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ESP-01 Versions

https://www.esp8266.com/viewtopic.php?f=160&t=17915

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ESP-01 Versions

PostPosted: Mon Jul 02, 2018 3:05 pm
by OG Style
How many different versions of the ESP8266-01 are there? I have 2 different board designs. One is blue and the other is black. It seem that I can't get gpio 0 to work on the blue one. The lights on the black one does not stay on when it is running.

Thanks
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