They look for all the world like any other LED, though embedded in the plastic dome is an integrated circuit to do all that flashing work. There was a time though when a flashing LED was something ...

so the blinking only occurs in darkness. Of course, the resistor also has to have a sufficient view of the LED. You might use this as a safety light that only works in the dark. A simple circuit ...

After verifying that the circuit works correctly, upload the examples and execute them after a restart. The uploaded file has to be called main.py and gets executed when the ESP32 starts up. blink.py ...

All of the versions of the code use the same circuit, which is described here ... BlinkLED_v1 Minimal demo showing how to blink a single LED, using only direct calls to low-level functions like ...

A possible next step is to create blinking circuit with capacitors and transistors. One of the most inventive ways to incorporate LED circuits into STEM projects is to make LED greeting cards.

The illumination LED lights up or blinks in response to remote control operations and lights up in different colours according to the status of the TV. Yes, but it's not advisable. Without the LED ...