How hard is to say to your dad or your professor “You forgot to zip your pants”? And Imagine how easy is to say “Your lights are ON” and still be able to send a message equivalent to “You forgot to zip your pants” without psychologically affecting the recipient of the message. This is what I have been working on this week.
When walking in streets, I have seen several men with their pants not zipped. Sometimes this even happens to officials when giving speeches in public. How can we solve this embarrassment to men? Here I provide an easy but an effective solution. Your pants are ON Projects seems promising.
It is probably one of the simplest circuits I have ever made during the previous 3 years. But still, it is good enough to fulfill the purpose I intended it to do. Skills like sewing and soldering were also used during the process.
Circuit components: Battery, resistor, LED, (button), and wire.
Circuits: The circuit components were arranged as showed in the diagram below which was sketched by using Circuitlab.
Mechanism and function of each component: The battery supplies power to switch on the LED when the circuit is complete. The pushbutton switches the LED on or off. The LED emits light when the circuit is completed.
Different versions: The initial idea involved having a push button in order to enable a user to switch on and off the LED regardless of the conditions. But later, I thought that this will actually not be saving a purpose to remind users to zip their pants because they may just decide to switch off the LED completely. So my last version excluded the push button.
First Version: A circuit with the pushbutton
Final Version: A circuit without the pushbutton
The circuit is designed in such a way that, as long as the pants are not zipped, the LED is ON, but when it is fully zipped, there is a short circuit which prevents the flow of the electric current to the LED hence it switches OFF. The resistor, R1, was put between the short-circuiting wires in order to avoid overheating and damaging the battery, V1, when the short circuit happens. Below are images which explain both the sewing and circuit making process in details.
Conducting threads whose terminals create a short circuit when the zip is pulled up. As a result, the LED switches off.
In case the pants are not zipped, LED is ON. You will be distracted by them and have to switch them off only by zipping your pants of course. Also, friends can easily remind you by saying, “your lights are ON”.
When the pants are zipped, LED is OFF and you are good to go.
The last version may involve uses of capacitors and transistor in order to avoid the short approach of just creating a short-circuit to switch off the lights.