I ran into a problem with servo rotation. I used the "Servo Sweep" program to test the servo's rotation (Futaba S3003), when connected to the UNO it rotates 180 degrees without any problem, but when connected to the D1 Mini Pro (esp8266) it only rotates approximately 80 degrees. I need to get the …

Servo rotates 180 degrees with UNO, but only about 80 degrees with D1 Mini Pro (esp8266)

LarryD September 9, 2021, 8:12pm 5

I believe your ESP8266 has Vcc = 3.3v

The servo may need its input to be > 3.3v