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Oscilloscope shows reaction, but LED does not blink

hello;

I put a simple blink sketch to a bare atmega328 but the LED does not blink. the oscilloscope at this pin shows that there is an alternate 5v / 0v every second but when I change the oscilloscope with a LED ist dos not blink. I use 220 Ohm resistor and tried the LED in both directions. I also use the ground 0V symbol at the other side of the LED. What ist my mistake ?

Hi.

difficult to know without without the actual circuit.
Can you share it?

when I put an oscilloscope at B2 it shows toggling 5 Volt every second but with LED ist does not work

 

void setup() {
pinMode(10, OUTPUT);
}

void loop() {
digitalWrite(10, HIGH); // turn the LED on (HIGH is the voltage level)
delay(1000); // wait for a second
digitalWrite(10, LOW); // turn the LED off by making the voltage LOW
delay(1000); // wait for a second
}

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hello thank you now it works. the connections were not correctly done