EEVblog 1608 - Mailbag

[EEVblog]

00:00 - Jumperless Breadboard from Architeuthis Flux & WokWi
https://www.tindie.com/products/architeuthisflux/jumperless/
https://hackaday.io/project/191238-jumperless/log/222858-getting-started-using-your-jumperless
https://wokwi.com/
https://www.digikey.com/en/maker/projects/jumperless/2e62cc88ee6145bc924041dd486de76f
https://theamphour.com/599-an-interview-with-uri-shaked-wokwi-com/
08:42 - Trying the software, it didn't go so well...
21:20 - Automated probe connection function
22:35 - My old IC Tester project
23:32 - 16TB Hard Drive
25:26 - Modius Headband: Induce sickness to loose weight?
Lime Forge Ltd Sense See Bike Light : https://seesense.cc/collections/icon3/products/new-see-sense-icon3
29:36 - Assembly Specialists Breadboard
https://assemblyspecialist.com/WebStore/breadboards.html
35:11 - Sanwa PS8A Pocket Multimeter
https://overseas.sanwa-meter.co.jp/products/digital_multimeters/ps8a.html
45:26 - BENQ IdeaCam S1 Webcam
https://www.benq.com/en-au/ideacam/supreme/s1-plus.html

[BrianHG]

  @27:20, You are so wrong....  I did the exact opposite to a grand level.

See my attached chart, and yes, it is authentic and to scale:
(Ozempic is trash by comparison, I will never touch the stuff)



Reference Chart: ozempic-and-weight-efficacy

Yes, that was done after 3 consecutive runs of long covid, loosing weight on a 1/2Kg (1.1 pound) cheeseburger diet, it is still working, and I'm approaching week 48...

Ok, just to be fair, that 38 minutes on my high gravity bike every second day is like a 2 hour hike up a mountain.

Well, ok, the cheeseburgers are made from minced pork filet mignon (or beef filet mignon when I can get it cheap), cooked rare, with fresh onions and hot mustard, and the cheese is 7 year old authentic cheddar while the bun is made from sprouted whole wheat bread.

@27:40, Ok, I've done this for 11 months and I have gotten back to you as you instructed.

[chickenHeadKnob]

That Sanwa hard case is total fail. Look at the hinge, not a real hinge, just one of those continuous molded thin seam. That will separate with a few tens of articulations, at which point it will fall apart.

[The_PCB_Guy]

Note that on the Sanwa pocket meter, the center "Off" position puts the thumb grip of the range switch fully within the case. Otherwise it extends beyond the edge, preventing you from closing it while it's still turned on. Nice attention to detail, and a good reason for having the Off position where it is.

[jonovid]

one dodgy Mailbag

Jumperless Breadboard, congratulations for making solderless breadboard complicated & expensive
this is like having a banana plug leads matrix patch board for all the test equipment on the bench

Modius Headband   making yourself sick is not that hard to do. 

Pocket Multimeter ok it works but .. 

[pickle9000]

Jumperless Breadboard

Cool concept, I have no use but a variant could be super useful for remote experiment control or equipment hacking, like on the ISS.

[golden_labels]

A very long time ago I had the same idea as this jumperless board. I decided it’s not viable. Too expensive, in particular with the spring contacts wearing out quickly, too complex for the purpose, too many issues with signal quality on semiconductor switches.

That’s something I would love, if only it was possible to make it cheap and without all the downsides.

[Dismounted]

I tore down and repaired a Sanwa PS-8 back in 2017 and posted about it here: https://www.eevblog.com/forum/repair/repairing-a-sanwa-ps-8-pocket-multimeter-in-progress!/msg1356489/#msg1356489

That version was at least 10-15 years old then, so up to 20ish years old now. Interesting to see the evolution. Looks like some board revisions in the interim - e.g., used to use a Sanwa silk-screened multimeter chip. The one I repaired is still in my daily carry!

[joeqsmith]

Watched the jumperless breadboard and like you, really didn't get it.   For digital,  FPGA.   For analog, I had bought some of Analog Devices programmable analog ICs back when they were introduced.  Never took off.

I checked out their site and read all the hype, still didn't get it.   High resistance makes it useless for digital.  As far as wiring analog circuits, that's normally just plugging in some through hole components.  This switch matrix they have isn't going to help me swap out components.    Seems like you are adding a lot more work to a technique I normally consider quick and dirty.   

Oddly enough during my search I did not find a single circuit built on this breadboard!!     Everything was software demos showing flashing LEDs. 

Show me something like this:
https://www.eevblog.com/forum/projects/challenge-thread-the-fastest-breadboard-oscillator-on-the-mudball/msg3113578/#msg3113578

***
After watching some of their videos, imagine accidentally moving that power supply switch and smoking your circuit.    3.3 parts may not like the +/-8V rails.   Then I wonder how much noise does all this stuff inject onto your circuits and how much leakage there is. 

I like copper...

[thm_w]

Sure, I wouldn't use the breadboard but the design is still amazing.
If the plastic is heat sensitive, probably the metal clips can be soldered in place first then the housing pressed down over top.

Watched the jumperless breadboard and like you, really didn't get it.   For digital,  FPGA.   For analog, I had bought some of Analog Devices programmable analog ICs back when they were introduced.  Never took off.

I checked out their site and read all the hype, still didn't get it.   High resistance makes it useless for digital.

Why would 80 ohms matter for low speed digital circuits (1MHz was stated in the video)? Bandwidth of the IC is 50MHz: https://www.wch-ic.com/products/CH446.html

Oddly enough during my search I did not find a single circuit built on this breadboard!!     Everything was software demos showing flashing LEDs. 

Maybe:

[Kleinstein]

For a digital circuit 80 ohm can be OK in most cases, though not at the supply. For analog circuits 80 ohm can be anoying, especially as the switch resistance tends to be quite temperature dependent.

[.RC.]

Did the inventer of that headband that makes you sick watch A Clockwork Orange, and think, that's a good idea.