Dear all,
I have a project in mind that i'd like to undertake that involves a key component (proximity switch) and i'm not sure if it exists in the form and parameters that i'm after. I have a fairly basic knowledge of component electronics so have done a small amount of research on proximity switches.
My understanding is that there are 4 basic proximity switches:
-Infared
-Acoustic
-capacitive
-Inductive
My requirements are -
A switch that closes a circuit on a series of leds (turning them on) once a distance of 20cm or more has been reached. Or rather that once the leds and circuit come within 20cms range of a particular object that the leds will turn off.
From what i've looked at on proximity switches they appear to work within quite small ranges, i.e. 25mm max.
So my question is, does anyone know of a proximity switch that has a greater range than the ones i've found or any kind of alternative component that might achieve the same result. The smaller the component the better really.
Many thanks for responses in anticipation.
I have a project in mind that i'd like to undertake that involves a key component (proximity switch) and i'm not sure if it exists in the form and parameters that i'm after. I have a fairly basic knowledge of component electronics so have done a small amount of research on proximity switches.
My understanding is that there are 4 basic proximity switches:
-Infared
-Acoustic
-capacitive
-Inductive
My requirements are -
A switch that closes a circuit on a series of leds (turning them on) once a distance of 20cm or more has been reached. Or rather that once the leds and circuit come within 20cms range of a particular object that the leds will turn off.
From what i've looked at on proximity switches they appear to work within quite small ranges, i.e. 25mm max.
So my question is, does anyone know of a proximity switch that has a greater range than the ones i've found or any kind of alternative component that might achieve the same result. The smaller the component the better really.
Many thanks for responses in anticipation.