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For ESP-01 blink sample on Arduino
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VelvetLounger commented Jul 3, 2021

Just tried this sketch. It loads fine onto two different ESP01 modules, however no LED is blinking on either one.

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HankB commented Dec 15, 2021

I just tried this out on an ESP-01 I've had for a while. It generally worked as desired. In my case the serial port and GPIO1 (which drives the blue builtin LED) share the same pin so I can't use both at the same time.

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