ESP8266 Community Forum

- Sat Jun 11, 2016 2:10 pm #49019 Of course, but I presume you won't run your module on breadboard all the time ...
Are you using surface mount parts ? or at least, for resistors, some 1/8W instead of 1/4W to save space ?

- Mon Jun 13, 2016 5:01 am #49103 Is this better now?
I want to use ESP-03 so do i need GPIO2, GPIO15 to pull or GPIO0, GPIO16 is enough?
And if i use 3.3V PS and 3.3V Relay do i need extra regulator for voltage or keeping 5v is better?

- Mon Jun 13, 2016 7:40 am #49113 You still need PullUP on GPIO2 and PullDown on GPIO15, otherwise it won't enter in proper boot mode.
For relays power supply, it is better to leave them at 5V, first because 3.3V version are more expansive and second because if you attach them on the same 3.3V of the ESP, it can cause power surge which the ESP won't like.

- Mon Jun 13, 2016 9:08 am #49117 @martin Sorry for keeping you busy thanks for your help. How can i use the pins G0, G2, G15, G16 when don't need to flash esp.



The ESP-03 pinout.