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Wifi Remote Control using ESP8266
Thank you! All this ESP stuff is a bit confusing and information on the web differs a lot for the same chip. Somebody advises using level shifters, somebody just puts voltage divider on an RX pin of ESP, somebody uses straight connection. As for the FTDI - that's right, burned one chip already.
The ESP8266 did not need a level shifter for 5V inputs from the serial port on the MEGA
The only problem was that we needed a 3.3V FTDI for the remote ESP8266 and the common FTDI would not support enough power for the ESP to run all the time. I see that there is a new SparkFun Beefy 3 - FTDI Basic Breakout (DEV-13746) that should solve this. Otherwise you need a battery or other power for the remote ESPThe Arduino MEGA 3.3V regulated output ran the local ESP just fine.
Did you have any problems with ESP being 3.3v and Arduino being 5v on a serial port?
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