Power Arduino Mega ESP85266

Question

Is it possible to Power a Arduino Mega 2560 and a NodeMCU V2 ESP8266 ESP-12E from a single 9V Block?

What would be the best solution?

• Can i power the ESP8266 directly via the Arduino Mega 5V output? (3.3V Output seems to weak)
• Is a Power Converter like this for the ESP8266 necessary?
• Should i use another external Power source for the ESP8266?

Thanks for any Help :)

Answer 1

Is it possible to Power a Arduino Mega 2560 and a NodeMCU V2 ESP8266 ESP-12E from a single 9V Block?

Yes. Assuming the "block" can provide enough current.

Can i power the ESP8266 directly via the Arduino Mega 5V output? (3.3V Output seems to weak)

No.

Is a Power Converter like this for the ESP8266 necessary?

Yes if you are powering it from more than 3.3V.

Should I use another external Power source for the ESP8266?

Not necessary if the 9V one can provide enough current as I mentioned above.