I'm working with ATTiny85 that has low current (40 mA) GPIO. In the other side I have a power supply (battery with ~5V) connected to a LM317 and an ESP8266 that demands high current (more than the ATTiny85 can give, around 170 mA) and uses 3.3V.
I need to switch the ESP8266 (on/off). I tried some Darlington transistors, MOSFET and optocoupler but nothing works. All the examples that I see in the web is to switch from a 3.3V signal to a 5V (or more) circuit. In my case I want to switch from a 3.3V signal (ATTiny85 low current) to a 3.3V circuit (ESP8266 high current). Is this possible? And is so, how can I do this?
(I have a little background in electronic but I'm from computer science, so please try to be soft with your answers, thank you)
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