Week 5 - Journal

I start by using Tinkercad to design and simulate my circuit and made sure that the circuit will work.

Tinkercad Components that I used during designing:

• Power Supply 5V

• Mini Breadboard

• Switch

• Push Button

• Buzzer

• 2x 220 Ohm Resistors

• 1x RGB LED

Braking Down:

I used 5V power source

I used 2x 220 Ohm resistors to reduce the voltage for the LED. One on the blue led terminal & the other on the red LED terminal and by combining the two colors Blue & Red it gives us Purple

Be Careful: While using RGB LED you must have in mind that Red color LED have maximum operating voltage of 2.4V on the other hand Green & Blue can handle up to 3.6V

It's time to buzz

I used the same components as on Tinkercad except the Pushbutton I replaced it with 2x aluminum foil lines on a cardboard slide that when user insert the coin it slides over that slide touching the two aluminum lines together and closing the circuit firing up the buzzer and lighting up the LED.

I build a box like encloser for the buzz bank using cardboard and cut out slots for power terminal .

Note: I used 5V DC Adaptor for my circuit as the operating voltage range of the piezo buzzer is 4-8V DC