#3232907 - 03/13/11 01:45 AM
Re: DIY hall sensor ...
[Re: Sokol1]
|
Joined: Dec 2008
Posts: 1,065
aRareKindOfMonster
Member
|
Member
Joined: Dec 2008
Posts: 1,065
|
Unfortunately the only place where I find theses items is in mouser.com but the shipping for my address is U$ 40!!! Local Farnell dont have. Sokol1 How many would you need? If you come up with a design and publish it - is this option better than Willynovi's implementation? if yes, I am interested - I will buy some and ship it to you.
|
|
#3233031 - 03/13/11 05:38 AM
Re: DIY hall sensor ...
[Re: f15sim]
|
Joined: Nov 2001
Posts: 3,955
Sokol1
Senior Member
|
Senior Member
Joined: Nov 2001
Posts: 3,955
Internet
|
aRareKindOfMonster Thank you for your offer, but I need understand how assembly this "MaRS" thing first. is this option better than Willynovi's implementation? What Willynovis's implementation you refer? I know only your USB controller, "Controladora Joy.01" Sokol1
|
|
#3233475 - 03/13/11 09:01 PM
Re: DIY hall sensor ...
[Re: Sokol1]
|
Joined: Dec 2008
Posts: 1,065
aRareKindOfMonster
Member
|
Member
Joined: Dec 2008
Posts: 1,065
|
What Willynovis's implementation you refer? I know only your USB controller, "Controladora Joy.01"
Sokol1 The PIC18F2550 based USB controller. Let me know when you got the MaRS gizmo figured out and I'll send you a couple.
|
|
#3234367 - 03/14/11 10:43 PM
Re: DIY hall sensor ...
[Re: f15sim]
|
Joined: May 2010
Posts: 108
julian265
Member
|
Member
Joined: May 2010
Posts: 108
|
FYI, the A1321LUA-T is still available from Newark Electronics and some other vendors. The link is: http://www.newark.com/allegro-microsyste...?CMP=AFC-HEARSTThey're $1.62 each in single quantities and they've got 2800 in stock. julian265, would it be worth it to order these as replacements for the A1302's that I'm using now? tnx. g. Thanks for the link! If you want to make a sensor that can be adapted to different axes and their angle ranges, I think so. You can use weaker, smaller, wider spaced, single magnets, or an offset sensor to get the best sensitivity for each axis. But if you don't notice any non-linearity, and you have enough resolution over the range of angles you need to measure, then no. Also if you find stronger magnets, or are able to increase your current magnetic flux in any other way, then you could increase the senstivity without replacing the sensor.
Last edited by julian265; 03/14/11 10:43 PM.
|
|
#3237676 - 03/18/11 03:02 PM
Re: DIY hall sensor ...
[Re: f15sim]
|
Joined: Jan 2004
Posts: 1,221
f15sim
More projects than sense!
|
More projects than sense!
Member
Joined: Jan 2004
Posts: 1,221
Graham, WA
|
Sitting on the SD card. I'll get some posted soon - working on other things at the moment. g.
|
|
#3286645 - 05/04/11 03:49 AM
Re: DIY hall sensor ...
[Re: f15sim]
|
Joined: Dec 2008
Posts: 1,065
aRareKindOfMonster
Member
|
Member
Joined: Dec 2008
Posts: 1,065
|
I wonder; what is the CH Products controllers' resolution? Some controllers can only recognize up to 256 steps. And while that should be enough - or is it? - a higher resolution, if supported, is a winner, especially with HALL sensors.
|
|
#3286752 - 05/04/11 09:08 AM
Re: DIY hall sensor ...
[Re: aRareKindOfMonster]
|
Joined: Jan 2011
Posts: 658
Bluedeath
BS 62 "Pegasus" CAG
|
BS 62 "Pegasus" CAG
Member
Joined: Jan 2011
Posts: 658
|
Given the quality of CH Products i would be surprised if a raw resolution of analog axes lower than 1024 steps while 4096 or more could be the most probable answer. 256 values is the resolution of the good old PC game port.
"When you plan revenge best dig two graves" Confucius "They who can give up essential liberty to obtain a little temporary safety, deserve neither liberty nor safety" Benjamin Franklin
|
|
#3286916 - 05/04/11 03:06 PM
Re: DIY hall sensor ...
[Re: f15sim]
|
Joined: Nov 2001
Posts: 3,955
Sokol1
Senior Member
|
Senior Member
Joined: Nov 2001
Posts: 3,955
Internet
|
|
|
#3287498 - 05/05/11 11:09 AM
Re: DIY hall sensor ...
[Re: f15sim]
|
Joined: Jan 2011
Posts: 658
Bluedeath
BS 62 "Pegasus" CAG
|
BS 62 "Pegasus" CAG
Member
Joined: Jan 2011
Posts: 658
|
@ Sokol and Julian, i cannot believe that!!! 8Bit! my respect for CH engineers is fading away.
"When you plan revenge best dig two graves" Confucius "They who can give up essential liberty to obtain a little temporary safety, deserve neither liberty nor safety" Benjamin Franklin
|
|
#3287696 - 05/05/11 03:47 PM
Re: DIY hall sensor ...
[Re: f15sim]
|
Joined: Jan 2011
Posts: 658
Bluedeath
BS 62 "Pegasus" CAG
|
BS 62 "Pegasus" CAG
Member
Joined: Jan 2011
Posts: 658
|
Of course i was exaggerating about ch engineers, the pots are similar but not identical. Pots in my TM flcs failed, by fail i don't mean only spiking I mean that after very little time the rivets that held the soldering contact in place were so loose that was impossible to fix them. The spiking instead was horrible right out of the box so had to lubricate and clean them the very day i bought the F-16 FLCS , calibrating the thing was a nightmare (but i loved it anyway). I workaround the problem of not finding the correct ones by using modified cheap stock 500k pots with no spiking or problem at all (I contacted Bob who was very helpful a lot of time back then), my TM wheel pedal pots suffered the same issue. CH pots after intensive use (even transplanted now to a my FLCS) never gave me any problem at all just the joystick was too light. I love TM stuff but i always thought that CH put more care in their products (They just don't give me the right feel when i use them), But 8 bit of resolution is really too low (i didn't consider the "old venerable" design, but even low end products of Saitek line have better resolution) i took for granted that the design was keep up with the time standard, on the software I really can't comment because I owned game port version of both the controllers and I tended to use fox2 at the time and in the end i gave the CH stuff to a friend.
"When you plan revenge best dig two graves" Confucius "They who can give up essential liberty to obtain a little temporary safety, deserve neither liberty nor safety" Benjamin Franklin
|
|
#3287752 - 05/05/11 04:40 PM
Re: DIY hall sensor ...
[Re: f15sim]
|
Joined: Jan 2011
Posts: 658
Bluedeath
BS 62 "Pegasus" CAG
|
BS 62 "Pegasus" CAG
Member
Joined: Jan 2011
Posts: 658
|
Actually is possible and relatively easy to hit a discrete position over a 1024 range with a joystick (the longer is the neck of the stick the more precise you can be) or a throttle (and be steady enough to maintain the value within the jitter rejection range of your controller) Try with Diview you will see that you can be precise to the first decimal of the percentage (even the second if you are good gunslinger without too much effort if you are not at the center of the stick (where springs do have the most of the resistance) if mechanical parts are in good shape, if this kind of precision is needed that's another story but 256 discrete position can be achieved even by untrained hand for example in MAME you can "feel" the difference between an 8 bit (which theoretically is the native resolution of most of the arcade analog controllers) and a 10 bit (or more) controller by the smoothness of the response because of the aliasing elimination. Like Audio is better to work with the highest possible sampling rate even when the final products will have CD quality. Any how i agree that extreme resolution are most of the time overkill, but they come very handy when is needed to use only a fraction of available range. BTW XBOX 360 pads do have 16 bit (at least my windows PC sees them as such when i check raw values) of resolution on the analog "Mushrooms" that is definitely overkill
Last edited by Bluedeath; 05/05/11 04:52 PM.
"When you plan revenge best dig two graves" Confucius "They who can give up essential liberty to obtain a little temporary safety, deserve neither liberty nor safety" Benjamin Franklin
|
|
#3288327 - 05/06/11 12:07 PM
Re: DIY hall sensor ...
[Re: f15sim]
|
Joined: Jan 2010
Posts: 464
tirta
Member
|
Member
Joined: Jan 2010
Posts: 464
|
@Brandano, thanks for the reply. hall sensor sounds very intriguing, I think I am going to try it.
@aRareKindOfMonster, actually, I have changed my gameport CH with mjoy16. so with mjoy16 (10 bits), hall sensor should be more accurate?
@Sokol & Julian I didn't know that CH use 8 bits. How about if I buy a new CH Fighterstick now? Does it still use 8 bits?
I plan to change x and y axis of my CH flightstick. With the magnets from cd/dvd drive, do I have to worry about shielding the magnets? if yes, how to shield the magnets from each other?
Last edited by tirta; 05/06/11 12:11 PM.
|
|
|
|
|
|
|
|
|
|
|
|
Exodus
by RedOneAlpha. 04/18/24 05:46 PM
|
|