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  • probe slip poster

    From john larkin@21:1/5 to All on Wed Jan 22 16:30:10 2025
  • From Martin Rid@21:1/5 to john larkin on Thu Jan 23 12:14:07 2025
    john larkin <[email protected]> Wrote in message:r
    https://www.dropbox.com/scl/fi/trdug87h0w498h94znv3x/Probe_Slips.jpg?rlkey=r5a22cx09twhsn9edq4c6es6f&raw=1

    Don't throw away your probe tip accessories?

    Cheers
    --


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  • From Phil Hobbs@21:1/5 to Martin Rid on Thu Jan 23 17:56:59 2025
    Martin Rid <[email protected]> wrote:
    john larkin <[email protected]> Wrote in message:r
    https://www.dropbox.com/scl/fi/trdug87h0w498h94znv3x/Probe_Slips.jpg?rlkey=r5a22cx09twhsn9edq4c6es6f&raw=1

    Don't throw away your probe tip accessories?

    Cheers

    As old time circuit columnist Tom Kneitel K2AES etc. once wrote, the reason they’re marked “10:1” is that “they ten to one away when you’re not looking.“

    Cheers

    Phil Hobbs

    --
    Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics

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  • From john larkin@21:1/5 to [email protected] on Thu Jan 23 10:32:34 2025
    On Thu, 23 Jan 2025 12:14:07 -0500 (EST), Martin Rid <[email protected]> wrote:

    john larkin <[email protected]> Wrote in message:r
    https://www.dropbox.com/scl/fi/trdug87h0w498h94znv3x/Probe_Slips.jpg?rlkey=r5a22cx09twhsn9edq4c6es6f&raw=1

    Don't throw away your probe tip accessories?

    Cheers

    Given a really good fet or sampling probe, and a decent logic signal,
    you don't need a probe ground and you only need to get near the
    signal.

    But there are too many really tiny, or leadless, parts around these
    days. People save space by using microscopic parts, and then add
    enough test points to pave over the area.

    A sewing needle is a good probe. It sticks to where you poke it.

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  • From Martin Rid@21:1/5 to john larkin on Thu Jan 23 16:13:02 2025
    john larkin <[email protected]> Wrote in message:r
    On Thu, 23 Jan 2025 12:14:07 -0500 (EST), Martin Rid<[email protected]> wrote:>john larkin <[email protected]> Wrote in message:r>> https://www.dropbox.com/scl/fi/trdug87h0w498h94znv3x/Probe_Slips.jpg?rlkey=r5a22cx09twhsn9edq4c6es6f&raw=1>>
    Don't throw away your probe tip accessories?>>CheersGiven a really good fet or sampling probe, and a decent logic signal,you don't need a probe ground and you only need to get near thesignal.But there are too many really tiny, or leadless, parts around
    thesedays. People save space by using microscopic parts, and then addenough test points to pave over the area.A sewing needle is a good probe. It sticks to where you poke it.

    Yes, I do use sewing needles jammed into a large micro grabber.
    And I have a set of micro grabbers that work great on soic size
    packages. Still looking g for a good octopus for holding
    everything in place.
    And I still have my probe accessory bag.

    In addition I usually add some 030 holes as test points to the
    layout to make troubleshooting easier.

    Cheers
    --


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  • From Robert Roland@21:1/5 to All on Fri Jan 24 09:58:14 2025
    On Wed, 22 Jan 2025 16:30:10 -0800, john larkin <[email protected]>
    wrote:

    I have been thinking if it may be possible to make a probe tip where
    only a part of the circumference is conductive. You might need to
    rotate the probe to reach the pin you want, but I don't think that
    would be a big problem.

    I found one hobby project where a probe tip was made from a piece of
    single sided PCB. But copper tarnishes quickly, and glass fibers are
    very abrasive.

    I have not been able to figure out a way to fabricate a useful
    prototype.
    --
    RoRo

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  • From Phil Hobbs@21:1/5 to Robert Roland on Fri Jan 24 14:02:37 2025
    Robert Roland <[email protected]> wrote:
    On Wed, 22 Jan 2025 16:30:10 -0800, john larkin <[email protected]>
    wrote:

    I have been thinking if it may be possible to make a probe tip where
    only a part of the circumference is conductive. You might need to
    rotate the probe to reach the pin you want, but I don't think that
    would be a big problem.

    I found one hobby project where a probe tip was made from a piece of
    single sided PCB. But copper tarnishes quickly, and glass fibers are
    very abrasive.

    I have not been able to figure out a way to fabricate a useful
    prototype.

    It’s simple to functionally reproduce the Tek “SureToe” probe holders by putting a dab of JBWeld putty on the pins and poking the probe through.
    Grease it up first!

    Cheers

    Phil Hobbs

    --
    Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics

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    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From john larkin@21:1/5 to [email protected] on Mon Jan 27 13:58:52 2025
    On Thu, 23 Jan 2025 16:13:02 -0500 (EST), Martin Rid <[email protected]> wrote:

    john larkin <[email protected]> Wrote in message:r
    On Thu, 23 Jan 2025 12:14:07 -0500 (EST), Martin Rid<[email protected]> wrote:>john larkin <[email protected]> Wrote in message:r>> https://www.dropbox.com/scl/fi/trdug87h0w498h94znv3x/Probe_Slips.jpg?rlkey=r5a22cx09twhsn9edq4c6es6f&raw=1>>
    Don't throw away your probe tip accessories?>>CheersGiven a really good fet or sampling probe, and a decent logic signal,you don't need a probe ground and you only need to get near thesignal.But there are too many really tiny, or leadless, parts around
    thesedays. People save space by using microscopic parts, and then addenough test points to pave over the area.A sewing needle is a good probe. It sticks to where you poke it.

    Yes, I do use sewing needles jammed into a large micro grabber.
    And I have a set of micro grabbers that work great on soic size
    packages. Still looking g for a good octopus for holding
    everything in place.
    And I still have my probe accessory bag.

    In addition I usually add some 030 holes as test points to the
    layout to make troubleshooting easier.

    Cheers

    Right. A scope probe will stand up in a 30 mil diameter test point
    hole.

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    * Origin: fsxNet Usenet Gateway (21:1/5)