Hello Sparkers!
I’d like to make a kind of sensor with a tone. The bigger picture being I want to mimic essentially what a seatbelt in a car does when it beeps when the belt is unbuckled then stops once it is. Only for my purposes it could be a beep or an annoying tone -doesn’t matter and it would be for the buckle on a cycling helmet because I forget to buckle my own.
I’d like to eventually add some portability so I can attach it to my bicycle or to the helmet itself to take around with me as I bike, but for now I’m ok with messing around with a circuit board and some jumper cables in my office.
Any guidance would be much appreciated
Thanks!
You’d need to rig some sort of switch up to the buckle to do this but I’m not aware of a switch that would work.
If you can use metal buckles, run a wire to each half, and then when the circuit is complete, (buckles buckled) stop sounding the beeper. An Arduino could do this or you could use a few transistors and some resistors. Search for ‘transistor inverter circuit’ for ideas how to construct this with just transistors.
If using a Arduino, it’s as simple as writing a small program the turn off the buzzer when the Arduino sees a completed circuit through the buckles.
Hi! Thanks for this. It’s a plastic buckle male+female as it is and I was just thinking there could be some small metal attachment on the buckle(male) and then another small piece of metal on the plastic it buckles into?