I have a 5 volt powersupply (2,5 A) and I have connected a long wire (+/- 4 meters) to the 5V side.
Then I reduce the 5V to 3.3V with a Lm1117 and connected the esp8266 to it with the 3.3V.
Without the 4 meters wire between the powersupply and the LM1777 everything works fine.
But as soon I extend the distance to the powersupply with the 4 meter (speaker)wire the ESP8266 doen’s work anymore or not reliable (sometimes I can ping it).
I also tried to add capacitors to the esp8266 between ground en 3.3v. I tried 1uf, 10uf en a 100uf electrolyt all the same time.
It improved a litte bit but still a lot of trouble.
I don’t understand why the 4 meter of wire is a problem and how i can solve it.
Thanks in advance