I want to control relay

Need Help With My Project
1

I have a arduino uno and esp8266-01 module.
I want to control relay.Help me please.

2

Welcome to the Blynk forum.

Start with this documentation for connecting the ESP and UNO:

http://help.blynk.cc/how-to-connect-different-hardware-with-blynk/arduino/esp8266-with-at-firmware

Other links to the Documents, Help Center and Sketch Examples are available at the upper right of this page.

3

Can i try it without using USB-UART TTL converter?

4

Yes but it’s difficult to debug any problems without Serial Monitor.
Wouldn’t recommend using an Uno and 01 to control a relay with Blynk.
Just use the ESP01 in standalone mode.

5

if i use esp01 in standalone mode,UNO can be a programmer?

6

Yes I believe it can be set up in place of a USB2TTL adapter.

7

you probably should buy something like this, it is much cleaner way to upload flash.