FastLED does not work on STM32/BluePill : BOUNTY US$40 for making it work. · Issue #744 · FastLED/FastLED · GitHub
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How do I fix the error that says 'ledpin' was not declared in this scope? - Project Guidance - Arduino Forum
BUILTIN_LED' was not declared in this scope · Issue #1 · G6EJD/ESP32-42e-Paper-Weather-Display- · GitHub
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How to program arduino using this application · Issue #4 · cotestatnt/arduino-plus-scratch3 · GitHub
![error: 'wifi_station_get_reconnect_policy' was not declared in this scope - Programming Questions - Arduino Forum error: 'wifi_station_get_reconnect_policy' was not declared in this scope - Programming Questions - Arduino Forum](https://aws1.discourse-cdn.com/arduino/optimized/4X/3/7/8/3784d9e90a30e511db48bc080dcb5908ad01dcba_2_1024x819.jpeg)