touch sensor

[Dr_Doggy]

In a related problem someone recommended setting up a pin to an oscillator, so when a bearing hits the pin it changes the frequency,

does anyone know what this was called again>?

 

[killivolt]

You need to provide more information I think.

Here is what I looked up in the Search.

I don't know if this is something that will help you or not.

https://www.electro-tech-online.com/threads/pic-pin-latch.23154/

 

[Dr_Doggy]

actually it may be a tilt type sensor.....

well originally it was the tube from a pen and they put 2 pins in each end so when a ball bearing rolled on to the pins they closed the contacts as a tilt detector......

but there was another way...... I want to use a single pin in each end for detection and by doing this i would set up a oscillator type thing and when the bearing hit the single pin it changes the capacitance and throws off the clock somehow creating a trigger

 

[killivolt]

actually it may be a tilt type sensor.....

well originally it was the tube from a pen and they put 2 pins in each end so when a ball bearing rolled on to the pins they closed the contacts as a tilt detector......

but there was another way...... I want to use a single pin in each end for detection and by doing this i would set up a oscillator type thing and when the bearing hit the single pin it changes the capacitance and throws off the clock somehow creating a trigger

This one might work for you.

https://www.electro-tech-online.com/threads/4066-analog-switch-reliability.41171/

If I'm thinking like you are then what I would do is put a single actuator though the bearing with 2 sensor plate either washers what ever. Then put a separate circuit on the bearing isolate the bearing surface with a plastic washer and adhere your sensor plate to it.

When the pin slides through the bearing it touches one end of the sensor surfaces to one side of the bearing meanwhile sliding it in the opposite touch's the other surface to the opposite side of the bearing. Both bearing and pins are in a

(Series parallel wiring combo )

 

[cobra1]

This sort of thing is called a relaxation oscillator,

 

[killivolt]

This sort of thing is called a relaxation oscillator,

Thanks, cobra1.

Here is a good site to study. https://www.4qdtec.com/mvibs.html

Ericgibbs, suggested it in a Thread back in 2009. Ocillator Circuits

 

[Dr_Doggy]

hey!thats it! thnx!