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Thread: Pickup Gaussmeter v.3.0

  1. #71
    Woodgrinder/Pickupwinder copperheadroads's Avatar
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    Quote Originally Posted by BadHorsie View Post
    Yes, you can order it at your own leisure. I ordered mine as soon as I was sure I was getting a PCB from -Elepro-
    so is everybody ordering there orders on there own or is this a group buy as well. what else do i need the sensor and a enclosure ..anything else ?

  2. #72
    Senior Member -Elepro-'s Avatar
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    Quote Originally Posted by David King View Post
    My new PCB and pic arrived today. Thanks Mr Elepro!
    miiiinchia in 4 days.....


    someone else received it?

  3. #73
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    -Elpro-, mine was in the mailbox this morning. That is 5 days to Texas. ( Smoking Fast). Know how to I separate (cut) the sensor probe from the rest of the PCB? @copperheadroads, this is not a group buy, you will have to purchase on your own you can follow the link to mouser on the front. Look at the following post reply :3, 35, 57, 65 looks like this will be all that you will need

  4. #74
    Senior Member -Elepro-'s Avatar
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    Please note

    someone changed the quantity of some component in the mouser basket link in reply #3.... compare quantity with list in that reply....

  5. #75
    Senior Member -Elepro-'s Avatar
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    Quote Originally Posted by BadHorsie View Post
    Know how to I separate (cut) the sensor probe from the rest of the PCB?
    i cut mine with a small hacksaw and then moulded pcb probe with dremel and a small sanding drum like this....

    bye


  6. #76
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    Thanks -Elepro-. I guess I was on the heading down the right track already.

  7. #77
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    -Elepro- is the PDF that you posted early to serve as the schematic or do you have one with more detail that shows the orientation of the components to be attached to the PCB. This is my first electronic project of this caliber and I am a little unsure of the orientation of some of the components Diode rectifer . or can you provide a macro picture of the board with components attached. HELP!!!
    Last edited by BadHorsie; 06-12-2010 at 10:05 PM.

  8. #78
    Senior Member -Elepro-'s Avatar
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    pcb silk screen show right orientation of all components....
    let me know if you have trouble...

    bye


  9. #79
    Woodgrinder/Pickupwinder copperheadroads's Avatar
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    thanks guys & BadHorsie ..... i was wondering if mouser had a sensor for this project or do i have to look on ebay . that one on ebay has ended probably not a problem finding another somewhere

  10. #80
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    My bad, looks like the sensors are not included in the mouser work sheet and will need to be sourced from some where else.
    Last edited by BadHorsie; 06-13-2010 at 03:44 AM.

  11. #81
    Woodgrinder/Pickupwinder copperheadroads's Avatar
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    i was going to try these ,are these the correct sensors
    10 pcs A1302 Ratiometer Hall Effect Sensors - eBay (item 350361904577 end time Jul-02-10 01:30:13 PDT)
    same number but just making sure ...i know im a pain in the ass

  12. #82
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    A1302 If this is the correct part number (A1302KUA-T) digikey has them for 1.37 but they will not ship until 7-28-12. The same for the AD22151 if this is the correct part number is (AD22151YRZ) they are also at digikey for 5.40 and will ship now.

  13. #83
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    Quote Originally Posted by copperheadroads View Post
    i was going to try these ,are these the correct sensors
    10 pcs A1302 Ratiometer Hall Effect Sensors - eBay (item 350361904577 end time Jul-02-10 01:30:13 PDT)
    same number but just making sure ...i know im a pain in the ass
    That is a good deal if it is the right sensor. you would be able to sell what you don't use to recoupe some of your outlay. Edit: that appears to be the same sensor that David King referenced in post 4. It has the same specs.
    Last edited by BadHorsie; 06-13-2010 at 05:10 AM.

  14. #84
    Woodgrinder/Pickupwinder copperheadroads's Avatar
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    i think im gonna give her a shot

  15. #85
    Senior Member -Elepro-'s Avatar
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    a1302 in ebay link are the right sensor..... and the ad22151xxx of digikey too
    ....instead the a1302kua-t of digikey has wrong package

    bye

  16. #86
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    Thanks -Elepro- I just ordered the eBay A1302 and the AD22151YRZ from Digikey (already had an account at Digikey).
    Last edited by BadHorsie; 06-13-2010 at 06:26 AM.

  17. #87
    Woodgrinder/Pickupwinder copperheadroads's Avatar
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    thanks guys & -Elepro- i ordered the ebay a1302 from evilbay

  18. #88
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    @ copperheadroads did you already order your AD22151?

  19. #89
    Woodgrinder/Pickupwinder copperheadroads's Avatar
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    no................ im gonna order A1302 from ebay

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    Wow, it seems as though I should be checking my PO box today.
    I already have an A1302 so I just ned to get the rest of the mouser stuff.
    Should be fun.

    Bill

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    The probe is double sided; What is the advantage of using both sensors on the probe.

  22. #92
    Senior Member -Elepro-'s Avatar
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    with ad22151 you have a wide range (more than +/- 5000 gauss) and can measure all magnets.... neo too....
    with a1302 you have about +/- 1650 Gauss range then you can measure only ceramic and alnico magnets....(but with more precision)

    so you can choose if you want a1302 or ad22151 or both.....

    bye

  23. #93
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    Thanks -Elepro. I have both on order and will use both. I guess I am all set part wise. I think I have everything sorted now. Once everything arrives I might have a few questions during assembly.

  24. #94
    Old Timer RedHouse's Avatar
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    That's a good looking board.

    Quote Originally Posted by -Elepro- View Post
    pcb silk screen show right orientation of all components....
    let me know if you have trouble...

    bye


  25. #95
    Woodgrinder/Pickupwinder copperheadroads's Avatar
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    thanks Elepro .......i got mint in the mail this morning

  26. #96
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    I got mine this morning to .

    great job.

  27. #97
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    Hey -Elepro- on the AD22151 sensor in the picture I can clearly see that the tow outer legs of the sensor is soldered. I can also see that on the bottom that the the two legs on the left side is soldered and the leg on the bottom right side is soldered. Are the two middle unused legs on the top and the 1 on the bottom left not soldered. Click on the picture to see exactly what i am talking about.
    Attached Thumbnails Attached Thumbnails gauss-002.jpg  
    Last edited by BadHorsie; 06-14-2010 at 08:47 PM.

  28. #98
    Senior Member salvarsan's Avatar
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    Elepro wired the AD22151 for unity gain and no temperature compensation.
    At unity gain, you get the +/-5000 gauss range.
    Since the device will get used near 20C/72F, the tempco isn't needed.
    Fewer parts == cheaper build cost.

    -drh

  29. #99
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    I am just trying to find out what the status of the three unused connectors on the sensor. I am having a hard time making it out in the picture as it is a little out of focus.

  30. #100
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    So are you saying they are just left alone because they are not needed.

  31. #101
    Senior Member -Elepro-'s Avatar
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    Quote Originally Posted by BadHorsie View Post
    Hey -Elepro- on the AD22151 sensor in the picture I can clearly see that the tow outer legs of the sensor is soldered. I can also see that on the bottom that the the two legs on the left side is soldered and the leg on the bottom right side is soldered. Are the two middle unused legs on the top and the 1 on the bottom left not soldered. Click on the picture to see exactly what i am talking about.
    pin used are 4 5 6 and 8.... the pin 1 has soldering just for a better solidity....

    Quote Originally Posted by salvarsan View Post
    ....Since the device will get used near 20C/72F, the tempco isn't needed.
    Fewer parts == cheaper build cost.

    -drh
    from 10C/50F to 35C/95F gain variation has +/- 1% error.... but.... i do not measure magnet in the garden in winter or at the sea in summer .....

    i think that temperature compensation of this chip is useful for automotive application (trhottle/valve position sensing) where there is a more wide range of temperaure

    bye

  32. #102
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    Elepro,

    Just got my board and chip in today.
    Thanks alot.

    Bill

  33. #103
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    I just pulled the data sheet PDF and it makes since to me now. I am learning Slowly, but learning. Thank you

  34. #104
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    Quote Originally Posted by -Elepro- View Post
    Please note

    someone changed the quantity of some component in the mouser basket link in reply #3.... compare quantity with list in that reply....
    Ahh.. that just completely stuffed my order up with Mouser which I just paid for.. why would anyone change that list around ?

    EDIT: I just emailed Mouser with amendments to my order, hopefully they can include the stuff that was missing from the list
    Last edited by fletch; 06-15-2010 at 06:19 AM.

  35. #105
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    Got my board today in the mail. I thought I had the right sensor already but it turns out I had an A1323 which appears to be 4x more sensitive, so I guess I'll have to wait for an a1302 :-(.

    Elepro, you mentioned posting some more pfds?

    Thanks!

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