ESP01 unsuccessful code execution I am trying to upload the Blink example from the Arduino IDE to a ESP8266-01 module using an Arduino Uno as serial programmer.
Now, the upload is successful but, upon restart (and disconnecting GPIO0 from GND), nothing happens. I have tried with different example sketches but it seems code was not uploaded.

My Board manager configuration


Board: Generic ESP8266 Module
Flash mode: QIO
Flash frequency: 40 MHz
CPU frequency: 80 MHz
Flash size: 1M (128K SPIFFS)
Debug port: Serial
Debug level: none
Reset method: ck (tried nodemcu too without success)
Upload speed: 115200
USB port


As an addition, here's what I get from the ESP01 through the Arduino IDE Serial monitor:

load 0x4010f000, len 1384, room 16 
tail 8
chksum 0x2d
csum 0x2d
v09f0c112
~ld
e:
 ets Jan  8 2013,rst cause:3, boot mode:(3,7)

ets_main.c 


and here's the IDE console window output:

sptool.py v1.3
Connecting..........
Auto-detected Flash size: 8m
Running Cesanta flasher stub...
Flash params set to 0x0020
Writing 229376 @ 0x0... 0 (0 %)1024 [...]
Wrote 229376 bytes at 0x0 in 39.0 seconds (47.0 kbit/s)...
Writing 229376 @ 0x10000... 0 (0 %)1024 [...]
Wrote 229376 bytes at 0x10000 in 39.0 seconds (47.0 kbit/s)...
Leaving...


The sketch I am using

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)
}
If you are using an ESP01 I don't think you should be using GPIO1 as the output pin, its my understanding that they don't have GPIO1.

I think they have GPIO0 and GPIO2, so you should have attached the LED to GPIO2 and use digitalWrite(2, HIGH); in you code.

Have a look at this page and see if what its on about is what you are trying to do.

http://iot-playground.com/blog/2-uncategorised/38-esp8266-and-arduino-ide-blink-example