To facilitate the production of high-precision potentiometers cheap Hall

Hope useful to you

Subtle changes in position of the magnet will affect the accuracy and range of the potentiometer

This is a Hall sensor model I used:SS495A or SS495A1

This is a simple, elegant mod. I like it, thanks for sharing it!

Hello,
Thank you for this tutorial photos, succinct and clear mas especially international
What Hall component reference is used?
What is the accuracy?
Does it can operate with a voltage of 0V to 3.3V?
Do you have a datasheet of this component?

Texte original
Merci pour ce tutorial en photos , succint mas clair et surtout international
Quelle référence de composant Hall est utilisé ?
Quelle est la précision obtenue ?
Est-ce qu'il peut fonctionner avec une tension de 0v à 3.3v ?
Avez-vous un datasheet de ce composant ?

Thanks, the best you to have precision.

translation:
Congratulations, otimo material.
Simple and objective.

Original:
Parabéns, otimo material.
Simples e objetivo.

Hello ! This is a Hall sensor model I used:SS495A or SS495A1

Thanks for your answer
It is used as an ordinary potentiometer?

I already have a pair of hall sensors and a pair of neodymium magnets, so I will try, thanks!

For my motion simulator

Thank you
I will study a little datasheet to see the accuracy that can be expected

I just get interested in the datasheet SS495A sensors A1 and AE
They do not suit me because I intended them to be connected to the analog inputs of 3.3V Arduino Due working
These sensors apparently operate only from 4.5v
My use of the Arduino Due to 3.3v I 1024 10-bit and 12-bit 4095
Has anyone ever used these sensors 3.3v?
For my part, I will look for references Hall sensor operating in 3.3v

Texte original
Je viens de m’intéresser au datasheet des capteurs SS495A , A1 et AE
Ils ne me conviennent pas car je les destinais à être branchés sur les inputs analogiques du Arduino Due travaillant en 3.3v
Ces capteurs fonctionnent apparemment qu’à partir de 4,5v
Dans mon utilisation sur l’Arduino Due à 3.3v j’ai 1024 en 10 bits et 4095 en 12 bits
Quelqu’un a-t-il déjà utilisé ces capteurs en 3.3v ?
De mon côté, je vais rechercher des références de capteur Hall fonctionnant en 3.3v

Use a converter to get a 5volt supply if only 3.3 is available, lots of types available and gives a better choice of components. The output from the device is easily scaled with a couple of resistors.

maybe like this one
http://www.mikroe.com/add-on-boards/power-supply/3-3v-5v-voltage-regulator/

or this one for about 5 euro
http://proto-pic.co.uk/ncp1402-5v-step-up-breakout/

Thank you for your idea!
Do you have an example of plain lowcost?
No risk to lose response time using a 5v component instead of a proper component 3.3v?

Texte original
Merci de votre idée !
Avez-vous un exemple de plaine lowcost ?
Pas de risque de perdre du temps de réponse en utilisant un composant 5v au lieu d'un composant adéquat en 3,3v ?

You would not have any response time penalty using a 5 volt sensor and scaling the output with a potential divider.

Allegro have some 3.3 volt devices though
http://www.allegromicro.com/en/Prod...sor-ICs/Linear-Position-Sensor-ICs/A1304.aspx

Thank you, it would be to try the A1304 using this type of case


But at the same price you can have an module ADXL345 3-Axis Output Module Sensor Accéléromètre Gyroscope for Arduino operating from 3v and to put directly on the dynamic simulator

To study …

Texte original :
Merci, ce serait à essayer le A1304 en utilisant ce type de boitier
Mais à prix égal on peut avoir un ADXL345 3-Axe Output Module Sensor Accéléromètre Gyroscope pour Arduino fonctionnant à partir de 3v et à mettre directement sur le simulateur dynamique
A étudier …

HI FREINDS
ive done something like this with SS495A and two magnets, but it has noise with this setup
that i donno how to cotrol this unwanted noise.do you have nose too ? and how to get rid of that?
regards and thank you for sharing

I did something similar with Allegro devices and they are noise free
http://www.xsimulator.net/community/threads/home-made-hall-effect-pot.7203/

Sources of noise can be;
Noisy supply to device
Grounding/earthing issues between device and rig electronics (earth loop with 50 or 60 Hz on signal).
Poorly designed device with no built in filtering or averaging.

Ensure the supply voltage is well filtered with an electrolytic and ceramic cap across the supply close to the device. If the device itself generates a noisy output you could place a filter (resistor/cap) across the output. Your electronics should be 'star' grounded with care paid to ground and 0 volt plane separation.

This comes from other websites, I didn't try.





Un problema que nos podemos encontrar con los "potenciómetros" una vez instalados es que por más que intentemos eliminar esas pequeñas vibraciones no lo consigamos, aún incluso variando los valores que nos ofrece el programa XSIM o el Software de Prilad.-

Normalmente ese problema es originado por las denominadas "corrientes parasitarias" las cuales crean movimientos no deseados (vibraciones) de los motores al no tener la "señal" (patilla central del potenciómetro) una estabilidad correcta.


Podemos intentar solucionarlo/afinarlo instalando un "condensador" de unos 100 nanofaradios (100 nF). Necesitamos conectar la patilla central del potenciómetro (señal) y la patilla de tierra (GND) al condensador.-



Gracias a "PETAR2" por la aclaración.-

thanks for sharing . i think @SeatTime has suggested something similar to do with the pots too if there was some noise.

Google translation:

One problem that we can find the "knobs" once installed is that even though we try to eliminate those small vibrations do not get even even varying the values offered by the XSIM Prilad or software program.

Usually this problem is caused by so-called "eddy currents" which create unwanted movement (vibration) of the motors not having the "signal" (center pin of the potentiometer) proper stability.

We can try to fix / refine it by installing a "capacitor" about 100 nanofarad (100 nF). We need to connect the center pin of the potentiometer (signal) and ground pin (GND) to the condenser.