be80be
Well-Known Member
This would make a good accelerometer. How it works is it has three mirrors in it two on the led side of the flaps. And one on the bottom, with the LDR facing down out side of the flaps. When the car or what ever you put it on
accelerates they move back by the amount of force to make your car move. Which angles the light from the led towards the LDR. Which lowers the resistance by how much force is applied. You could also use it for sensing tilt.
I made one with ball and spring to see if the car moved but with flaps and mirrors you have better precision if you wanted to use it for tilt. It starts at 112K and gos down to 20k like turning a adjustable potentiometer very good control.
**broken link removed**
I guess people think this is big or hard to make it is only a 1/2 by 1/2 by 1 1/2 inch the mirror is made of
paper you get it at hobby shops. The flaps are hinged on a piece of copper wire with copper foil and the mirror glued to it an I coated it with solder for more weight. Here a pic of the first one I made not to good looking but it worked as good or better then what you can buy. And it cost less then a dollar to make.
Here shows how the adc values change on LCD
[embed]http://www.youtube.com/v/xsrZR8J2Y_c&hl=en&fs=1[/embed]
accelerates they move back by the amount of force to make your car move. Which angles the light from the led towards the LDR. Which lowers the resistance by how much force is applied. You could also use it for sensing tilt.
I made one with ball and spring to see if the car moved but with flaps and mirrors you have better precision if you wanted to use it for tilt. It starts at 112K and gos down to 20k like turning a adjustable potentiometer very good control.
**broken link removed**
I guess people think this is big or hard to make it is only a 1/2 by 1/2 by 1 1/2 inch the mirror is made of
paper you get it at hobby shops. The flaps are hinged on a piece of copper wire with copper foil and the mirror glued to it an I coated it with solder for more weight. Here a pic of the first one I made not to good looking but it worked as good or better then what you can buy. And it cost less then a dollar to make.
Here shows how the adc values change on LCD
[embed]http://www.youtube.com/v/xsrZR8J2Y_c&hl=en&fs=1[/embed]