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It would be difficult for me to exceed my "unlimited" monthly allowance, but I'm elephanted if I could get my head round their "reasonable use" criteria.
Software rusts. Simon Stephenson, ca 1994. So does this signature. me, 2012
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That's why I switched to a provider that offers unlimited.
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And what the ![Elephant | [mastadon]](https://codeproject.global.ssl.fastly.net/script/Forums/Images/elephant.gif) is SLA?
M.D.V. 
If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
Help me to understand what I'm saying, and I'll explain it better to you
Rating helpful answers is nice, but saying thanks can be even nicer.
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Service Level Agreement
I’ve given up trying to be calm. However, I am open to feeling slightly less agitated.
I’m begging you for the benefit of everyone, don’t be STUPID.
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Thank you
M.D.V. 
If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
Help me to understand what I'm saying, and I'll explain it better to you
Rating helpful answers is nice, but saying thanks can be even nicer.
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The game is called Magicka 2; you cannot install it, without a spy-app that makes sure you do not cheat.
SLA? You sell a product. If the license is toxic, it doesn't run.
Bastard Programmer from Hell 
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.
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If they don't measure their SLA's - how do they know if they meet them?
Do they let you the organisation specify how you are going to measure the SLA's?
If not, I recommend this high technology device to help to determine if the service levels were met: Industry recognised SLA measurement device
Ask them: if you assert they did not make their SLA's what their process would be to determine that they did?
Otherwise - indefinite free service. 
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maybe the stepper has an intermittent short in it. sounds faulty in any case. The current draw should be stable under a constant load.
Check out my IoT graphics library here:
https://honeythecodewitch.com/gfx
And my IoT UI/User Experience library here:
https://honeythecodewitch.com/uix
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That was my first thought. Changed motors still does it, changed 4988 driver (could have been a fault) still does it but only with a scope probe, not multimeter or other implement only a scope probe (connected to a scope, not even selected channel, but connected).
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Wow. It almost sounds like maybe your scope is doing something to the signal. Could it be your scope is to blame?
ETA: My Salae was acting really strange one day, and I spent all day debugging because I couldn't figure out why my SPI signal was so off. It's still a mystery as the analyzer hasn't acted up since.
Check out my IoT graphics library here:
https://honeythecodewitch.com/gfx
And my IoT UI/User Experience library here:
https://honeythecodewitch.com/uix
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Don't really think so, a cheapo R&S Pro branded UniT model, about 700mV on the probe...
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Inductor or capacitor - I forget which.
I had a similar problem 20+ years ago: the board was working really weirdly so I stuck a scope on to look at what was happening and ... the problem went away. I talked it over with Tektronix, and (apart from their first suggestion which was "ship a scope with each unit?") they were very helpful. IIRC, it was the scope probe capacitance that was fixing it and adding a couple of pF to the line smoothed it all out and it worked faultlessly from then on (though it may have been a small inductor we needed to add, I can't remember and the H/W designer died a few years ago.)
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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I have been thinking that, I just try resoldering the connections to the module. Stupid thing is must be the capacitance as adding other probes or a screw driver doesn't do it (inductive, I think). It happens if I change the motor, the driver board.
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Quote: and the H/W designer died a few years ago.
Sorry, but that cracked me up. Feeling like the Bicentennial Man here: "Oh that guy that designed that system is long gone and the guy that took over is already retired too" 
forging iron and new ideas
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Andreas Saurwein wrote: "Oh that guy that designed that system is long gone and the guy that took over is already retired too"
I have not reached the 50s and I already have experienced something like that. 
M.D.V.
If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
Help me to understand what I'm saying, and I'll explain it better to you
Rating helpful answers is nice, but saying thanks can be even nicer.
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Ground through the scope? The ring of the probe BNC connector is connected to earth.
I'm skeptical of the tiny (pF) capacitance of a scope probe "fixing" this, though it's not out of the realm of possibility depending on what you're connected to.
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Dave Kreskowiak wrote: Ground through the scope
I would agree.
"the debugger doesn't tell me anything because this code compiles just fine" - random QA comment
"Facebook is where you tell lies to your friends. Twitter is where you tell the truth to strangers." - chriselst
"I don't drink any more... then again, I don't drink any less." - Mike Mullikins uncle
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Do you have a cat? This is clearly a case where observation affects the observed.
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No Putty's involved, I'm not Griff!
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Found something like this behavior on an old NCR printer.
Found the client had cheated with a wire wrap pass of speed control
to get extra fast printing without paying for it.
Long ago when such things were part of leased equipment agreements. (Ha! SLA)
"A little time, a little trouble, your better day"
Badfinger
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Strengthen Aldi - no Tesco struggles! (11)
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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Consolidate
Good getting two supermarkets in 
In a closed society where everybody's guilty, the only crime is getting caught. In a world of thieves, the only final sin is stupidity. - Hunter S Thompson - RIP
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You are up tomorrow!
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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I kept trying to find anagrams that included ALDI but excluded TESCO. After all, the clue clearly stated there was no Tesco. 
It finally dawned on me, Tesco's not out, it's in and I was able to solve it. I liked this one! 
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way. The current draw is all over the place, it will not move! stick a scope probe on the 
Proper Weird!