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  1. Replies
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    It's not the post that is protected. I think that...

    It's not the post that is protected. I think that the protection is on the forum/subforum level. Please check whether after login you can see the Parking Lot forum marked with red rectangle.
    ...
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    I was fixing a lower power EA amp and it was...

    I was fixing a lower power EA amp and it was based on the ICE Power module. Luckily it was a preamp problem and I managed to fix it.
    Can you post a photo of the power supply?
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    It looks like some kind of a permissions problem....

    It looks like some kind of a permissions problem. Maybe Tboy can help.
    Can you check whether you see the "Flea Market" subforum after you login into the forum? It's in the "Hang Out" group. Have you...
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    Yes, the details are in the other thread in the...

    Yes, the details are in the other thread in the Flea Market subforum. I think that you need to have 4 posts to see the subforum (it's a general forum requirement).

    Mark
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    I sent you an email with all the details. It...

    I sent you an email with all the details. It looks you didn't read it :(.
    All the details are in the "Flea Market" subforum.


    https://music-electronics-forum.com/showthread.php?t=48634
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    Thanks for the suggestion. It seems to me that...

    Thanks for the suggestion. It seems to me that I've seen an offer (for the delivery) for about $40 but for me it is still a lot.
    For the time being I'm looking for some friends who travel to the US...
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    Thanks, the second link was the most important to...

    Thanks, the second link was the most important to clarify the issue. Very nice keyboard - I would need to have at least 50 orders to manufacture such a keyboard (which most probably won't happen)....
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    Yes, of course. I use 3.7V LiPo which is charged...

    Yes, of course. I use 3.7V LiPo which is charged to 4.2V and then charging is switched off by the battery management chip. So you may leave the meter connected to the USB charger for as long as you...
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    Piezo pickup requires a high impedance buffer....

    Piezo pickup requires a high impedance buffer. And such a buffer requires a battery. So your idea to avoid battery in the instrument is very difficult to fulfill. I would rather search for circuits...
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    I think that you need at least 4 posts in order...

    I think that you need at least 4 posts in order to be able to PM other users. In the meantime you can update your profile and add your location. It is very important whether it's UK or the US.

    Mark
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    I've got few questions about features of the...

    I've got few questions about features of the meter. Here they are:

    - Range +/- 1670 Gs. Over (and below) this value the meter displays "OVER" text
    - The polarity of the magnetic field is...
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    I think that this is possible. But since I have a...

    I think that this is possible. But since I have a lot of amp repairs now, this may take a week or so.

    Mark
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    Finally I have 7 meters ready. One of them has...

    Finally I have 7 meters ready. One of them has black enclosure. I have also 2 prototypes but I need to update their software - there are minor differences between the prototypes and the final...
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    Ciao Pepe, It's a pity that we couldn't meet...

    Ciao Pepe,

    It's a pity that we couldn't meet in Milan.
    Have you seen this photo?
    52548
    It was made in Milan :) - pickups with alnico magnets. I was wondering whether these were your pickups.
    ...
  15. It seems that I forgot to mention that I have two...

    It seems that I forgot to mention that I have two such fuses. If anyone needs such a fuse, I can send it to him (possibly in Europe - due to costs of packages).

    Mark
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    Thanks for the info. So the ER version had a...

    Thanks for the info. So the ER version had a fixed range 25000 Gs. It's suitable for neodymium magnets but for pickups you loose accuracy. This can be done but requires a redesign of the PC board.
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    Does ER means "extended range"? The meter I...

    Does ER means "extended range"? The meter I designed can measure values up to 1690 Gs. I was wrong thinking that it can be easily modified by replacing the Hall sensor. The only sensor that I found...
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    This is the latest version of the meter (next to...

    This is the latest version of the meter (next to the prototype). I still have to buy the OLED display and program the meter (with the latest version of the software). It will take about two weeks to...
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    Thanks, It looks like there may be problems...

    Thanks,

    It looks like there may be problems with A9 magnet. But in this case I may change the Hall sensor and get the range up to 3280 (with slightly lower precision).
    The pickups that I tested...
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    I agree with Helmholtz that there is no need to...

    I agree with Helmholtz that there is no need to change the sensor. It would mean loosing precision of the measurements. However, if there is a demand to do it, I can easily change the range of the...
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    Yesterday I visited friends in Milan (IT) who...

    Yesterday I visited friends in Milan (IT) who make their own pickups and guitars and I tested my meter with one of their pickups (with alnico magnets). I was a little afraid that the magnets are to...
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    Yes, I'll be selling them. But at the moment I...

    Yes, I'll be selling them. But at the moment I have just 1 prototype that I can sell (the other one will be used for tests) and I ordered several PC boards yesterday. I think I'll get them in a week....
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    The tip is 5 mm wide.The lower part is 14 mm wide...

    The tip is 5 mm wide.The lower part is 14 mm wide but this shouldn't be critical.
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    Will this shape be better? 52167 This is bottom...

    Will this shape be better?
    52167
    This is bottom layer as seen from the bottom.
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    Of course. The meter displays the orientation of...

    Of course. The meter displays the orientation of the magnet that is measured (letters N/S) so there is only one way to make the measurement. You cannot reverse the probe and expect that correct...
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    I'm not sure what you mean by 1.3mm thickness of...

    I'm not sure what you mean by 1.3mm thickness of the probe tip. In my meter the Hall sensor is assembled on the bottom layer of the board and when doing the measurement it touches directly the...
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    In the final version of the meter there will be a...

    In the final version of the meter there will be a fiducial on the top layer of the PC board. In the prototype I plan to mark it with a nail lacquer :). Do you suggest that the tip of the meter should...
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    You are right: there is an option "Save a copy of...

    You are right: there is an option "Save a copy of sent messages in my Sent Items folder by default" in the User Profile. I thought that it is set to true by default but maybe it's not.
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