hello
i am trying to make a analog handbrake for car simulations.

would be very appreciative of someone that can tell me what is required when using hall effect sensors.
i am new to using this technology.
when using analog potentiometers, i was able to control the degree of pot min - max deflection by way of the size of spur gears connected to the pot.
if i got 0-5 volts out of the circuit if the magnet were to turn 0-180 degrees
how can i can i change the configure of the circuit to output 0-5 volts, if this time the magnet only was allow to turn 0-90 degrees?

after watching a youtube video
https://www.youtube.com/watch?v=EHM3ahJ8FYQ
and
https://www.youtube.com/watch?v=9MegJCuHZjI
it looks like i can change the max output in relation to the degree of max deflection by way of adding an analog potentiometer used for TRIM?

this site has info relevant to my project
http://www.mycockpit.org/forums/content.php?r=88-Hall-Effects-Sensors-to-make-a-joystick

i would like to continue to use gears, but unfortunately, i can not mount a spur gear to the pivot point. i wanted to use the linkage and connect it to a rack gear, but it will make the project more bulky than it needs to be.
i have decided on hall effect sensors because i feel like i can glue a magnet on the pivot point.

i just dont know what kind of magnets to get, and if someone could recommend me some hall effect sensor par number/ manufacturers, VERY MUCH APPREICATED!!!

I seem to recall seeing something about being able to reduce the needed degrees of movement similar to what you describe, but I can't put my fingers on it right now.

In Suncom F-15 gimbal is very trick put HALL sensor (or anything that not the original potentiometers) because this gimbal use a "oscillating disk" to move the pot lever. The "plate" move up and down and turn around a ball join in potentiometer lever.