I created this attiny circuit using paper, 3V battery, copper tape, 10k resistor and LED lights. As the result, the light should be turned on when I touch the two ends by hand. The first time after I upload the code into ATTiny, it did not work. I checked it using bread board first and uploaded the code again. One of the lights in my circuit worked, which means my ATtiny worked fine and there was a problem with my circuit. I have to check the connection in my circuit.