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Hall effect pots

Started by h106frp, February 01, 2015, 04:43:19 PM

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h106frp

These look useful, long life with much improved relaibilty and works just like a normal pot. Added bonus is a range of swept angles 35 to 360 continuous so no need for any gearing to maintain resolution. Definite upgrade item if the rest of my rig works out. Tad pricey though £10 to £15 for one offs :(
http://uk.farnell.com/bi-technologies-tt-electronics/6127v1a90l-5/sensor-hall-0-2v-20v-to-10v-pin/dp/2319673

doubledragoncc

Another great find H, Tell me you live online lol.

DD
GPBOC Live Streams: https://www.youtube.com/c/IASystemsComputerControls; i7 12700K 5.1GHz Z690 ASUS Strix Z690-A Mobo 32GB 3600MHz DDR4 RAM ASUS Strix RTX3080 OC 10GB DDR6X ASUS Ryujin 360 AOI Cooler ROG Thor 1200w PSU in ROG Helios Tower Case.

h106frp

Like to surf if the television is on - most programs only hold my attention in small snippets ;) missus complains that i watch 3 programs at once if i have the channel hopper (remote) in my hand, it is possible with the ad breaks these days  ;D

doubledragoncc

I dont have a TV so Im safe from the disease "mustaswitchachannelitus"

The Hall pot is the way to go but nearly 3 times the price of a heavy duty P260 vishay pot

DD
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h106frp

Might get more reasonable in quantity  ;) and you can reduce the complexity and component count elsewhere to balance the cost a bit - but yes, pricey. I think it will be one of those items that get cheaper as they become more mainstream - the advantages are just too obvious and i'm sure (better) equipment manufacturers will make the move to the newer technology eventually.

doubledragoncc

I can 3D print the gears for pennies as they dont have any pressure on them but I WANT hall pots and sensors no matter what. I think its best for me to have them as an option if the customer is willing to pay the extra. Too many dont understand the cost of building systems and make it hard to build quality without the cost. Also mass produced is far different from hand made!!!

People need to wake up and stop comparing a bike controller cost to the steering wheel systems!!!

DD
GPBOC Live Streams: https://www.youtube.com/c/IASystemsComputerControls; i7 12700K 5.1GHz Z690 ASUS Strix Z690-A Mobo 32GB 3600MHz DDR4 RAM ASUS Strix RTX3080 OC 10GB DDR6X ASUS Ryujin 360 AOI Cooler ROG Thor 1200w PSU in ROG Helios Tower Case.

h106frp

Nearly all the top end wheels have gone hall effect due to issues with steering center point drift when using traditional resistive sensors and it is cheaper and simpler than  optical encoders

HornetMaX

Quote from: h106frp on February 01, 2015, 08:57:35 PM
Nearly all the top end wheels have gone hall effect due to issues with steering center point drift when using traditional resistive sensors and it is cheaper and simpler than  optical encoders
Oh, I thought wheels used optical encoders.

MaX.

doubledragoncc

Its the optical encoders that have been hving problems, G25/27 seem hit pretty bad. There are fixes for it but who wants to HAVE to fix something that should work?

I would love to use the best on my systems and I have designed them to use different types of sensors so people can upgrade if they want to save money to start with, or just pay for the best components from the start. Its not an easy market.

DD
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h106frp

February 01, 2015, 10:22:21 PM #9 Last Edit: February 01, 2015, 10:25:50 PM by h106frp
Thinks its the T500 where they have changed,
High end custom wheels use an (industrial)encoder, for consumer grade production units hall effect is a fraction of the price of a high resolution encoder (you would need 1024 ppr quadrature absolute for similar performance angle sensing - or a cheaper unit and a lot of gearing) and does not need extra processing for direction and angle.

doubledragoncc

Yeah I need to get some and test how they are but it can be expensive if you have to buy so many to test the ACTUAL way they are on a system with different angles of rotation and I learned a long time ago it is NOT something you can calculate, feeling is a human factor not a mathematical calculation. You would not believe how many springs I have purchased over the years to get things right for levers and throttle etc.

DD
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h106frp

Might try the home-made route as suggested in this link for hall effect pots for feedback - geared pots are not the best for smooth servo feedback ;)

http://www.mycockpit.org/forums/showthread.php?t=22267

doubledragoncc

I love that H, with my new 3D printer it would be so easy to make a body to replace the wood and make it neater. Just got the grant at 3AM on my bank so got the GO dude...........WOOOOOOOOOHOOOOOOOOOOO

DD
GPBOC Live Streams: https://www.youtube.com/c/IASystemsComputerControls; i7 12700K 5.1GHz Z690 ASUS Strix Z690-A Mobo 32GB 3600MHz DDR4 RAM ASUS Strix RTX3080 OC 10GB DDR6X ASUS Ryujin 360 AOI Cooler ROG Thor 1200w PSU in ROG Helios Tower Case.

h106frp

Snagged a few sensors, £2 ea for the more sensitive version (twice the volts out per gauss). Probably modify an old potentiometer as a test housing to generate some test data and report back once tested.

Would be nice to have a proper 3D printed housing, and might make for a very economic low noise rotary sensor.

Been some interesting announcements this week with new 3D printing methods, its certainly the production method of the future.

doubledragoncc

H we can work together bro, you send me a 3D design to print and I can print it for you. We are a community and if people need 3D printed parts I am totally up to let anyone use my printer to do it, just need the 3D model and in STL file type. I aint interested in making money from such a thing, cover the cost of ABS or PLA or Nylon(have to test nylon yet) is all good. I will even sign a doc to say I wont steal a design if you know what I mean, this is for all of us.

DUDE time to work together..........................

DD
GPBOC Live Streams: https://www.youtube.com/c/IASystemsComputerControls; i7 12700K 5.1GHz Z690 ASUS Strix Z690-A Mobo 32GB 3600MHz DDR4 RAM ASUS Strix RTX3080 OC 10GB DDR6X ASUS Ryujin 360 AOI Cooler ROG Thor 1200w PSU in ROG Helios Tower Case.