<d1b2>
<rwhitby> I've been using them for almost 10 years now - very handy, and after a project is finished you can remove the wires from the housings and reuse both.
<d1b2>
<rwhitby> I've been using them for almost 10 years now - very handy, and after a project is finished you can remove the wires from the housings and reuse both.
<d1b2>
<rwhitby> I've been using them for almost 10 years now - very handy, and after a project is finished you can remove the wires from the housings and reuse both.
<d1b2>
<rwhitby> I also then make adapters like this for 0.05 headers
<d1b2>
<rwhitby> I also then make adapters like this for 0.05 headers
<d1b2>
<rwhitby> I also then make adapters like this for 0.05 headers
<d1b2>
<thirtythreeforty> Awesome thank you. I may buy some. My connector is 2x16 (16 digital channels plus ground) and that seems to be unobtainium so 4x 2x4 might be the ticket
<d1b2>
<thirtythreeforty> Awesome thank you. I may buy some. My connector is 2x16 (16 digital channels plus ground) and that seems to be unobtainium so 4x 2x4 might be the ticket
<d1b2>
<thirtythreeforty> Awesome thank you. I may buy some. My connector is 2x16 (16 digital channels plus ground) and that seems to be unobtainium so 4x 2x4 might be the ticket
<d1b2>
<rwhitby> (I've never been able to find a source of pre-made converters)
<d1b2>
<rwhitby> (I've never been able to find a source of pre-made converters)
<d1b2>
<rwhitby> (I've never been able to find a source of pre-made converters)
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<d1b2>
<cfy_yfc> today, I tested this with a LeCroy WavePro and good passive probes; with the standard GND clip on the LeCroy probes the signal already improved a lot; using the 'GND-antenna-clip' resulted in a decent signal I would consider usable; so up to 100 MHz now looks quite well on my 'pirated Glasgow Explorer'; I checked the output up to 140 MHz, there, the signal is quite degraded
<d1b2>
<cfy_yfc> measurement before/after the Rarray: the R provides a little bit of damping, so there is overshoot/undershoot before the array and what looks to me being a better signal after the Rarray to the I/O pin
<d1b2>
<cfy_yfc> so takeaway is: 1) the Glasgow Explorer (unofficial build / assembly) performed reasonably well up to 100 MHz; beyond that signal integrity degrades noticable 2) I'm glad the Rigol and its probes were from a friend and not my own 😅 they suck
<d1b2>
<cfy_yfc> applet gets a little bit of polishing and then posted for everyone to confirm that if needed
<jpa->
the lecroy probe might have smaller input capacitance, which causes it to be less affected by the ground clip loop
<jpa->
the loop can easily have 0.5µH of inductance, which when combined with typical ~10pF capacitance in 10x mode gives lowpass at 70 MHz
<d1b2>
<cfy_yfc> sounds like a very reasonable estimate/assumption. I could also double check with a ZS4000 active probe but I think the results won't change much; it seems to me that it is mainly a matter of proper GNDing --> 'reasonably good' PCB/addon design is probably enough for most cases up to 100 MHz; I cannot think of an actual requirement for me where I would need that much but it is good to know that everything up to 50 MHz should be easily possible --
<d1b2>
exactly what I was looking for 😀
<d1b2>
<thirtythreeforty> @cfy_yfc what probe model were you using with the Rigol? Have you tried Lecroy probe-with-Rigol and/or other-probe-with-Lecroy?
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<d1b2>
<thirtythreeforty> (just wondering which of them is the limiting factor. could be both, too)
<whitequark[m]>
thank you for investigating, cfy_yfc!
<modwizcode>
That's good to know
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<d1b2>
<Attie> sounds good, thanks for the info @cfy_yfc
<d1b2>
<Attie> out of curiosity... is yours a "pirated" because you built yourself, or because you've made other changes (e.g: used different conponents)
<d1b2>
<Attie> if you self built, afaik, that's totally legit!
<d1b2>
<Attie> also... are you able to share screenshots for reference?
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<d1b2>
<stefandeml> hmm, head scratching . How does combination of capacitor and inductor yield a low-pass filter? I'm just aware of regular LC lowpass filters...
<miek>
err, i don't understand the question. an LC lowpass filter *is* a capacitor and inductor
<whitequark[m]>
re self-built: so long as you use our layout and BOM, yes, legit!
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<d1b2>
<Perigoso> What's the [m] in your name?
<sorear>
the matrix.org bridge adds that
<hell__>
oh, I thought it meant mobile (phone)
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<d1b2>
<Perigoso> Ah, didn't know about that bridge
<d1b2>
<Perigoso> How many we got by now?
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<modwizcode>
is there any benefit to using the matrix bridge?
<whitequark[m]>
yes, no messing with bouncers or persistent ssh sessions
<whitequark[m]>
i like it greatly
<modwizcode>
ah
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