Wheel Angle sensor

Using a rotary sensor it is relatively easy to cancel out Ackerman with linkage design. (And poor linkage design can easily create an Ackerman like imbalance from a straight line reference)

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Does anyone know any linear sensors available in europe that arent over 100 euro? Seems like a real easy solution and since you can adjust the ackerman effect in the software there is no need to do so with the hardware.

Reichelt has one but no idea if it’s robust. The one from Ali seems more robust and they ship for free.

Hi
Ok for the linkage but un some cases
(Like our carraro front drive with suspension and mud guard) it s not so simple to have à linear and robuste linkage
So i prefer to install it “the best robust” then measure à few points (résistance vs angle) and put it in linearization table (map) afterwards in the Ino code, just important to have à few points close to 0 deg
François

a little inspiration Fendt 714 TMS 2004 ackerman 115%

was


Should this one work AgOpenGps?

They are shy on detailed specs but most likely it would work. How much is it? I’m afraid that it costs a lot compared to other options.

The thing is it came on a tractor when bought, so it’s not that i want to buy one of those.

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#winning

The WAS can be a tricky install sometimes, what luck to have one ready to go!

So, if installed, you only have to find out which terminals are provided, check out the type and manufactor of the WAS sensor.

Edit: installed like this example:

image

Yes i think it’s exactly one like that, now i just need a wiring idea for those, maybe somebody knows. To me it’s the same as the ones from AcDelco but maybe i’m wrong.

May be some photos of the WAS sensor itself helps.

The LD-Agro holder and sensor look like a copy af AG-leader, so perhaps you could find more about wiring on AG-leader site.
https://www.google.com/search?q=ag-leader+was+sensor&tbm=isch&ved=2ahUKEwjO2-Opup74AhVDKewKHWBLCJQQ2-cCegQIABAA&oq=ag-leader+was+sensor&gs_lcp=CgNpbWcQAzoECCMQJ1DSCFj8FWDJGWgAcAB4AIABRIgB3wOSAQE4mAEAoAEBqgELZ3dzLXdpei1pbWfAAQE&sclient=img&ei=geagYo6XDMPSsAfglqGgCQ&bih=722&biw=1536#imgrc=CXiZ8sPKgKvS6M

Check out this example of AG-leaders manual:

You can see the wire colors of the WAS plug,

I guess
red … 5 Power supply (5V or if radiometric type VBatt)
green… Signal
black … GND

But keep in mind, if the senor is not an radiometric type and You connect 12V to 5V you WAS is death!!!

Edit:
same Manual:

but look red / black wires a crossed :sweat_smile:

It seems outer wires are sensor voltage supply, inner is signal

Is there a way i can know if it’s a radiometric type? Because there is zero description or Model Number or anything on the sensor.

At first you can try supplying only 5 VDC. If its a radiometric type it needs 10 … 30 V supply voltage.

I’m using elobau sensors, which are reverse polarity proof.

Following Multimeter measurements on my 5V variant: (elobau 424A06A120)
1…0V, 2…Ub(5V), 3 Out (0,5-4,5V)

Out → Ub = 169 Ohm
Out ← Ub = 172 Ohm
Out <-> 0V = 6020 Ohm
Ub <-> 0V = 5940 Ohm

Hi Brian,

I am trying to learn as much as I can WAS and came across the camaro sensor referred to above. You provided a link https://github.com/farmerbriantee/AgOpenGPS/tree/v4201/Support_Files/Docs with a bunch of pictures but its resulting in an error tried playing around with the address and came up with AgOpenGPS/Support/Docs at master · farmerbriantee/AgOpenGPS · GitHub but it got nothing on WAS. Can I have the updated address for the bunch of pictures. Thanks.

Question - does it matter if the sensor is on the front left or right wheel?

Not really, Ackerman setting can go + or -. Most important when mounting is to use as much of the sensor range as possible to get the best resolution possible and as close to center as possible when the wheels are straight.

When setting WAS center in AoG, is important to get it as close to perfect as you can. Counts Per Degree isn’t as fussy but it’s good if the displayed steering angle is pretty close in both directions.

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What readings should I get in kOhms on rqh100030 I got prewired connector for it but its wierd

It rotates 360 deg in circle infinitely is that normal