Getting basic LED electronics to work with raspberry pi 400

I finally got around to plugging some basic electronics into the GPIO pins on the back of the Raspberry Pi 400 i got

Top is ground GND the one below is GPIO 21

How I wired my breadboard

I used both Scratch and Python to get my LED to flash

Things I’ve learned:

  • My eyes are getting worse! It’s real tricky to see where you’re plugging the wires in
  • double check the pin diagram n the book. For ages I was working with the wrong pins!
  • you really do need a resistor before plugging in the led! I burnt one out already without one!