I just received an ESP8266 which I ordered from SparkFun (https://www.sparkfun.com/products/13678), and I'm having a hard time verifying whether it is functioning properly. I've looked at several tutorials, and videos that go over how to connect the module to an Uno, but nothing shows up in the serial monitor for me and I'm stuck at this point.
I'm using an external power supply of 4x AA batteries, with a voltage regulator to give me 3.3 V. I have Vcc(aka 3V3), CH_PD (aka EN), and RST connected to 3.3 V. I have the module connected to ground, and GPIO0 connected to 3.3 V. I have the RX and TX pins from the Uno connected to a level shifter, and then connect the RX and TX pins from the module to the respective pins to the level shifter. I've also tried swapping RX and TX around in case I had them mixed up.
When I supply power to the module the blue LED will do a quick blink, and then proceed to stay lit. When I connect GPIO0 to ground, and power the module, the LED goes straight to being solid without the initial blink. The LED leads me to think it has sufficient current, and then I haven't damaged it. There seems to be only 1 LED opposed to the additional red LED that every example seems to show.
When I open the serial monitor and power the module, I don't see the boot information. I've tried changing the baud rate in case that was an issue but regardless of which baud rate I select from the serial monitor nothing shows up. Trying to enter "AT" yields nothing in the serial monitor either.
Does anyone have any idea what I could be doing wrong?