ESP8266 Blink sketch - does not blink / or stays constant I uploaded the Blink sketch (from the ESP8266 examples, in the Arduino IDE) successfully. 

Depending on which wire configuration I am using two different things happen:

wiring 1:

CH_PD -&gt; 3.3V
VCC -&gt; 3.3V
RST -&gt; GND
GPI02 -&gt; LED
GND -&gt; GND


wiring 2:

VCC -&gt; 3.3V
RST -&gt; GND
GPI02 -&gt; LED
GND -&gt; GND




There are TX/RX lines in the picture from when I was flashing - they aren't being used for running the sketch.

With wiring 1 the LED stays on (doesn't blink) - I was wondering if this was because I still had the VCC -> 3.3V connected. So I disconnected that, which gives way to wiring 2.

With wiring 2 the LED doesn't come on at all, it is the same as wiring 1 except without VCC -> 3.3V.

Why is it constant when 3.3V is going to VCC, and constantly off when I disconnect it? Why doesn't it blink using wiring 2?

UPDATE

A diagram as requested, sorry it was my first time doing this:



Code:

/*
 ESP8266 Blink by Simon Peter
 Blink the blue LED on the ESP-01 module
 This example code is in the public domain

 The blue LED on the ESP-01 module is connected to GPIO1 
 (which is also the TXD pin; so we cannot use Serial.print() at the same time)

 Note that this sketch uses LED_BUILTIN to find the pin with the internal LED
*/

void setup() {
  pinMode(LED_BUILTIN, OUTPUT);     // Initialize the LED_BUILTIN pin as an output
}

// the loop function runs over and over again forever
void loop() {
  digitalWrite(LED_BUILTIN, LOW);   // Turn the LED on (Note that LOW is the voltage level
                                    // but actually the LED is on; this is because 
                                    // it is acive low on the ESP-01)
  delay(1000);                      // Wait for a second
  digitalWrite(LED_BUILTIN, HIGH);  // Turn the LED off by making the voltage HIGH
  delay(2000);                      // Wait for two seconds (to demonstrate the active low LED)
}
You should connect Vcc to 3.3V, because that's how the ESP8266 is powered.
RST is active-low reset and should be pulled to 3.3V