just Buzz

Build the justBuzz circuit by adding the buzzer to your arduino board. At this stage, leave your justBlink LED circuit in place. Test the buzzer works by signing into Tinkercad using Sign In with Google and selecting your school account. Copy and Tinker the design. Copy and paste the code (which is text based this time) into your Arduino IDE and upload it to your board. The buzzer should play a little tune.

Extension:

• Find some of your previous code that uses both the buzzer and LEDs. Edit this code to use the correct pins as per your built circuit and upload to your Arduino UNO to test it.
• Add an LED or 2. You need two wires, two more 220 ohm resistors and 2 more LEDs. You should have wires that look different to the male-male wires we used in the justBlink circuit. Look at the Exploring Electronics page to work out what type of wires they are and write this in your log. Next, go back to the Tinkercad circuit and add the first extra LED, using just one of each component as per the diagram. Update your code to include that LED in your setup and loop functions and test the circuit with the new code. If you get that working, add in the second extra LED.