@de@noc.social
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de

@de@noc.social

I am mostly here for hacking and science stuff. At my day job I am developing industrial robot controllers. In my spare time I like hacking all kinds of stuff, with a special interest for computers from the 70s and 80s. I am running zeromips.org.

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mntmn, to random
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me, procrastinating to go grocery shopping

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@mntmn didn't know that Mac OS9 had ARM support 😆

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@mntmn A shame that this architecture is slowly fading away.

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@mntmn well Motorola ehm Free scale ehm NXP went through a lot of changes. Maybe they were busy doing other stuff.

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@mntmn I guess i.MX is enough for everybody...

azonenberg, to OSINT
@azonenberg@ioc.exchange avatar

Time for another fun puzzle!

  1. Where am I?
  2. What building is pictured at the center of the frame?
  3. What are all of the antennas for?

CW guesses or solutions to avoid spoilers, as usual.

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@azonenberg Corning Tower observation Deck

de, to random German
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My daughter's latest laptop design. With wireless mouse, ehh whale. @mntmn Look, it has a split spacebar.

image/jpeg

de, to random German
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Attic find dated 1969

de, to random German
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I have no idea what I am doing here, but I don't care.

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Tum te tum, dum de dum (Zak McKracken and the Alien Mindbenders)

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I also ordered this to annoy the postman

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Man this is from 1999, who would have thought.

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Beautiful

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The don't make them like this anymore

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I think I am slowly getting somewhere.

azonenberg, to random
@azonenberg@ioc.exchange avatar

Does anyone know if there is a piece of test equipment that:

  • Is generally oscilloscope-esque (measures voltage over time)
  • Has a ton of channels. Eight or ten minimum, ideally significantly more
  • Has high-ish DC input impedance (tens of kΩ) and low AC impedance (50Ω)
  • Input range of at least +/- 12V, ideally up to 48V or more
  • Fairly low BW specs by scope standards, I need maybe 10 MHz and something under 100 Msps.
  • >8 bit vertical resolution would be nice

I don't want to have to build it, but I don't think it exists. A synchronized pair of Teledyne LeCroy WaveRunner 8000HD scopes with RP4060 active power rail probes would absolutely meet the requirement, but be exorbitantly expensive for the lower BW requirement here.

Use case is monitoring and verifying power rail ramp up/down behavior on a complex board that may have 10-20 different rails, each with requirements for ramp rate, on/off ordering, etc.

de,
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@azonenberg We are using the Yokogawa DL850 here that might match your needs.

image/jpeg

de,
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@azonenberg The successor DL950 looks even better: https://tmi.yokogawa.com/solutions/products/data-acquisition-equipment/high-speed-data-acquisition/dl950/

mntmn, to random
@mntmn@mastodon.social avatar

we got some more valuable business advice via email today, wanted to share in case someone finds it useful

so extra puttons are useless as they ony replicate buttons that already exist on the laptop keyboard. Something like this needs far better than dual core in this day and age, the minimum entry level laptops have at least a quad core or 8 core CPU, or even an APU (CPU and GPU combined). Also, the modules to add into it, or upgrade it cost far too much. I can get a better laptop than this for the cost of some of those individual add ons. A laptop should come fully functional, regardless of whether we have to put it together and it should be basic compared to other laptops as far as what it comes with and the price range. With all the stuff that's not included, l'd be paying 3x the price of my gaming laptop to have something that only has half the hardware of the gaming laptop and is not as easy to use. As far as the keyboard, no laptop should not have a numpad. The numpad is essential for the calculator, and in case the keyboard ever stops working. Accessibility options require the numpad in order to use the numpad as a mouse. If you've ever used an actual laptop, you can easily see what the issues are here and what needs to be changed. If you ever bought a laptop you can see that everything for this, including the device itself are over priced.

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@mntmn Lo and behold, I found the ultimate treasure in my storage. And it plugs into your headphone jack, so he can even use it with his walkman.

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@mntmn @jacqueline and don't even think about launching Tangara without this ultimate accessory.

de, to random German
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I guess the Pmod fanboys will go wild 😆

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@jacqueline Have you considered adding Pmod to the Tangara? With this module you could listen to your favorite MOD floppies on the subway 🙃

jacqueline, to random
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i need to check whether a bodge i've made on my laptop is correct. it's very easy to verify when i can just open the source in kicad and highlight the net i care about 🥰

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@jacqueline I still have the jumper in our system, looking even more gnarly. But it might be useful sometime 😉

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@jacqueline ah, that's the connection to the connector. Awesome.

jacqueline, to random
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i can feel the pull. the urge to hack on my reform. it is returning.

de,
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@jacqueline see zeromips.org if you need some inspiration

mntmn, to random
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restoring MNT Rack Reform prototype for (open source hardware computer that can drive some GPUs)

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@mntmn please don't tell me, you will bring an ARM system with PCIe GPU to 37C3. I am afraid that will trigger me again and I will be forced to tell all that stories once more...

de, to random German
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It's that time of the year again ...
Involving some interesting ideas around my new superpower.

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@tubetime seems my FPGA is missing even more pulses. It classifies pulses in short, middle, long and error. Basically works, but sometimes misses pulses that the saleae sees.

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