Joystick use a Rotary Hall effect sensor.

[lazy-b]

I just wonder, why the most expensive Futaba Transmitter still using the 50 year old technology Potentionmeter ?

Just encounter this items, its a Rotary Hall Sensor.
http://www.mclarenelectronics.com/products/all/sens_rotary_hall.asp

Have saw others have make Home-Made Joystick that uses this kind of sensor.

Here another Hall sensor, that really look like a regular Potentiometer:
http://www.farnell.com/datasheets/59167.pdf

Guys, Have you tried using this sensor?

Plan to make my own Joystick that uses this kind of sensor.

[ZAGNUT]

haven't tried that specific sensor but have played with others and am now very happy with using the "old technology" pots in my radios.

the hall sensors make a lot of noise, eat lots of current and most importantly they and the magnets used are very sensitive to temperature changes and expansion/contraction of the joystick parts that hold them in place.

the $1 pots used in the 14MZ are good for a million cycles and if you want something better then $10-$15 will get you sealed pots that are good for 10 million cycles. either of these are going to be far more stable than the hall pots.


dave

[slippyr4]

I just wonder, why the most expensive Futaba Transmitter still using the 50 year old technology Potentionmeter ?

Because it's proven, reliable technology that works perfectly in that application. If it ain't broke, don't fix it.

[AleG]

Because it's proven, reliable technology that works perfectly in that application. If it ain't broke, don't fix it.

For what is worth, and from what I´ve read in reviews of modified joysticks, the hall effect pots are vastly superior in precision and durability, you can really kiss pot noise and glitches goodbye.

Some time ago I was working on a custom joystick project and I looked into using this kind of pot for it, but it was about the same time I moved to Bangkok so I abandoned it.

[lazy-b]

Guy, I guess....The Rotary Hall sensor still expensive.....saw one in internet, that each Rotary Hall Sensor cost about USD 50 each, for 4 pcs thats already USD 200.

if the Hall effect sensor have drop its price.....someday all our Transmitter and servo will be using a Rotary Hall sensor Potentiometer.