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Test Equipment / Re: ds1102e - burned out psu resistor?
« Last post by Performa01 on Today at 09:44:28 PM »
It's actually the other way round. Leaded solder joints (as it is preferred for repair work by most) are shiny silver, whereas the lead-free stuff mostly looks pretty much like a cold solder joint, i.e. dull grey.
General Chat / Re: What did you buy today? Post your latest purchase!
« Last post by ChrisLX200 on Today at 09:42:47 PM »
Tried 3D printing a case for one of the five DPS5015s I have lying around, seemed to work out OK and a whole lot cheaper than buying them.

Well, I had everything going great once I put the scope back together with the original hard drive I had, but I decided to clone the drive so I could keep the original disk as back-up. Now the scope won't pass SPC  :palm:

I reset the RTC on the mini-ATX motherboard and now I'm running SPC again and it has been running for at least 15 minutes (It seems like it's hanging). Prior to running SPC I ran the Diagnostic Loop and it passed all 444 with no failures  :wtf:  I'm at a loss here. I hope someone can help with the SPC issue. There has to be a software issue or the like but I'm not sure. Thanks in advance.
Test Equipment / Re: Test Equipment Anonymous (TEA) group therapy thread
« Last post by djos on Today at 09:41:19 PM »
Not quite TEA but I'm super happy with hakko 611 dual solder reel the wife and kids "bought" me for my birthday, dunno how I lived without one before!

I see that you seem to be using the same iron stands I am but somehow you managed to get your 9501 handle to sit correctly in it whereas mine in sits in but is completely horizontal, bd139 has precisely the same problem so we can learn from you please?

Basically I customised the crap out of it.  :box:

I’m an electronics engineer and I often find that I want to measure a couple parameters (voltage, current, temp, maybe a few digital pins) over a few hours or days at a relatively low data rate. I often also want simple test automation (switch a load on – drain a battery; switch load off – observe charging cycle etc.). It seems like I should be able to set up this sort of test in a few minutes, but all of the existing data acquisition solutions I can find take considerable time to configure (write code for logger, get a shunt resistor for current measurement etc.) Also, many of the existing options have limited input ranges, and their gain doesn't scale automatically with input signal amplitude. Has anyone else found this sort of thing to be a problem?

Anyway, I finally got frustrated enough and just went and made the data acquisition / test automation device I wanted. I call it “Trendeca”, you can see the details here:

If you have any feedback on the design, or have some other thoughts, I’m keen to hear them. Some of my engineering mates in the area wanted one, so I thought I would offer it to anyone who's interested.
Received my boards and stencil.
They modified my apertures and even added some extra apertures below an IC since they probably thought I had forgotten them.
This annoys me so much I have no words. How on earth can I communicate to them that they are not do ANYTHING to my stencil design files???
Projects, Designs, and Technical Stuff / Re: Configuration file format
« Last post by css on Today at 09:38:10 PM »
Found this schema description for JSON:

Seems to be a draft specification. Also, the it seems not possible to include the schema "inline" in the configuration file (I may need to accept that the schema is stored in a separate file)
I thought the voltage standard across the whole EU was 230V +10% -6%, so it shouldn't go below 216.2V.

In former 240 V countries it's 230 V +10/-6% in former 220 V countries it's 230 V +6/-10%
Are you sure? I thought the purpose of harmonisation was that it should be the same everywhere, so having different tolerances, for different places doesn't make sense, although this is the EU we're talking about here.
Projects, Designs, and Technical Stuff / Re: Configuration file format
« Last post by css on Today at 09:36:06 PM »
Hi hamster_nz, thanks for your reply.

I dont think trust is an issue in this setup. Let me try to explain in more detail.

The embedded nodes carry the configuration. The nodes "knows" the restrictions of each configurable parameter. On boot, the embedded device loads the configuration file, and validates every entry against the restrictions stored in internal flash. As such, the validation of the configuration file does not rely on the schema.

What I seek is a way to export the parameters and restrictions - such that the configuration parameters and restrictions can be presented to a user. By including the restrictions in the configuration file, the user can make sure to not enter eg. invalid parameter values (if he does anyway, then the configuration is just rejected by the embedded device, which will use a default safe value).

By including the restrictions (and possibly also descriptive strings), the tool used for changing the configuration (in this case a web interface) does not need to know anything about the configuration file - it can simply load the current values and, from the schema, present the user the valid selections for each parameter.

I hope above is clear.
Test Equipment / Re: EEVBlog 121GW Discussion thread
« Last post by EEVblog on Today at 09:34:51 PM »
Those 2000 get the updated hardware (switch..) right?


What about the meters stuck at the harbor, are these unstuck yet?

Yep, all finally unstuck.

What about selling these to "qualified" (those that are aware of what they are getting themselves into) beta testers?

I'd rather not, we already have enough keen people out there testing I think.
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