ESP8266 Community Forum

- Sat Jul 25, 2015 4:41 am #24219 Hi everyone!

I want to connect ESP8266 with my Arduino Uno using external power supply.

Can someone tell me is this schematic correct?

Link: http://img.ctrlv.in/img/15/07/24/55b25e813cb36.png

Thanks!

- Thu Aug 06, 2015 6:22 am #25174 Looks about right. Personally I would level shift the TX and RX pins using 4 resistors and 2 fets like this:

http://www.electronicsupgrade.com/a-sim ... -33v-logic

Or if you really wanted to make things easier use something like this:

http://www.electronicsupgrade.com/shop/ ... -fi-shield