@blujayfox @greg
Reminds me on the website of the #EEVBlog forum
They have an input field where you have to enter the magic number of 84/2 = [...] and that already catches practically every spam bot

Unfortunately there is a less public second reason why Google Recaptcha is used, its analazing the guest computer to mine an unique user ID

This weekend I’ve been away from home, participating in a #hamradio 50MHz contest and since the band isn’t open all the time, we usually bring some toys and projects along to pass time👌🏻☺️

I always wanted to experiment with instrument GPIB remote control and as I recently found a #prologix interface module at work, I decided to try it out before ordering my own (they’re quite expensive).

Using the a HP204C oscillator, I’m able to read the frequency from my old PM6669 counter quite simply with Putty Terminal connection to the prologix interface, it works 😃😃

#testandmeasurement #electronicsengineering #electronics #engineer #gpib #instrumentcontrol #hamradio #eevblog

EEVblog 1547 – Contacting the Voyager 2 Space Probe PART 1 https://www.eevblog.com/2023/06/07/eevblog-1547-contacting-the-voyager-2-space-probe-part-1/ #spacestuff #eevblog

@deviantollam
There's also the over-dramatic outstretched hand, as used by Dave #EEVBlog

A Swiss company called Sun-Ways wants to put solar panels on railway tracks 🤦‍♂️😂
https://youtu.be/7vItnxhWRqw
#eevblog #fail

The early #eevblog episodes on battery technology and capacity never really grov old: physics, chemistry and the many performance parameters is as relevant now as it was 12y back. And it’ll continue to be so, don’t ever believe people telling stories about ‘magic batteries that solves everything’ 🦄😂

Anyone looking to design battery powered circuits, should watch these episodes, they’re really the ‘batteries 101’.
I’ve worked with electronics my entire career and these episodes were still an eye opener to me on certain topics 🙂

Highly recommended 🤓

#electronics #engineer #electronicsengineering #batterytechnology #batteries #energydensity

@eevblog Hi Dave, yeah, we're all out here 😉
If you post some messages with hashtags you'll be surprised just how many of us there are.

#EEVBlog #TearDown #electronics

Testing my 1988 #burrbrown REF200 - this is likely the first time it sees power since it left the factory 🥹 My #eevblog multimeter and my #keithley #sourcemeasureunit agree: 100uA well within the 0.5%.
The metal can TO-99 housing has a special feat though: it’s specified from -55 to 125C, amazing 😃

#electronics #engineer #electronicsengineering #testansmeasurement

Vielseitig interessierte Lissy
#cats #catsofmastodon #eevblog

Heating 100ml water with a 2W resistor based element, how close can I get with the well known heat transfer formula?

As it turns out, quite close, I calculated 1.71W which is 16% off 👌🏻🙂

I’m using my #keithly #sourcemeter as a calibrated supply, so the two #eevblog multimeters, measuring heating element voltage and current, aren’t really needed. They’re mostly there for display and bling, however doing this experiment with a regular bench supply, you would need them 🙂
Multiplying the two measured values gives a quite satisfying result though, you should try it 😃

I’m done with #calorimeter experiments for now, other exiting things are queued up in my little lab 🙂

#stem #stemeducation #physics #engineer #electronics #testansmeasurement

Almost a year ago, I used a shallow tub of water to map the equipotential lines and derive the field lines between two electrodes submerged in the water.
I used 30Vdc, except in a single case where I switched to 60Vdc as can be seen at the picture with the Fluke meter. The center line is at 30V, not 15 🙂
As a fun thing, you can submerge LEDs in the water, and if they’re oriented the right way according to the field (polarity)direction, they’ll actually light up, right there in the water! 🚨💧👌🏻🤓
It’s a fun and safe way to play with electric fields and experience their properties 👍🏼
#stem #stemeducation #physics #physicslab #testandmeasurement #engineer #eevblog #fluke

#DRM #EEVblog 1462 - Why #Dymo Label Printers #SUCK!
https://www.youtube.com/watch?v=xzSDJRC0F6c