Viewer Mail!

Time for Viewer Mail for January, 2024.
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[@LanceHall]

As a kid I remember being fascinated by that bubble style calculator display. I even disassembled one to put the display in my collection (now gone).

[@CalculatorObsessed]

Me too. Although I still have a fair few.

[@j.w.8663]

Oh wow. I love LEDs so much. Those ones with the old deep red colours are entrancing!

[@thenoblerot]

The 7 segment is a beauty! Sparkles like jewelry!

[@CalculatorObsessed]

Wow! My favourite; interesting LED displays. I made a clock with my VQB71 LED displays.

[@Donna230]

I just love Viewer Mail. Fran and her fans are so neat.

[@geraldcampbell6834]

The LEDS are most likely emitting some infrared light that is most likely the hot spot of light you're getting in the camera!

[@FranLab]

Good hypothesis. Probably true.

[@Petertronic]

Recording and reproducing colour is a complex topic. Look up "gamut" for example@@FranLab

[@KeritechElectronics]

Ha! I never knew that Edgar Allan Poe as well as Mary and Percy Shelley flied balloons! Nice LEDs. I have a digital multimeter with this type of LED display, it's indeed a thing of beauty. RFT was an East German (not Soviet!) electronics combinate, consisting of several different plants of various specialties. That's some nice stuff from my part of the world. I'd send you some Polish parts :).

[@FranLab]

DDR was soviet - though not a part of the USSR - established in Russian occupied territory and culturally and politically very much a soviet state.

[@KeritechElectronics]

@@FranLab yes, GDR was established after the post-WWII partitioning of Germany, and backseat-ruled from Moscow, pretty much like all the countries here of the Eastern Bloc. Access to Western culture and tech was limited and censored, communist propaganda was ubiquitous and enforcement of Soviet ideology was strict, but that didn't extend to pushing the Russian culture - the Germans would not fall for that. Not in the sense we had here in Poland through the Nazi occupation or the entire 19th century, when the country was partitioned between Prussia, Russia and Austria, with active efforts to curtail teaching and use of native language, history etc.

[@ameyring]

Nice video. I love messing with lights. Any way you can enable captions for the hard of hearing? If this requires more Patreon support, please let us know.

[@JulianSortland]

​@@FranLab A ULN 200x would have driven thos nicely. I suppose 7 drivers rather than 8 was for 7 segment displays of various types.

[@mhansl]

Another fantastic book on early aviation: Wings of Madness: Alberto Santos-Dumont and the Invention of Flight Like a lot of American kids, I was raised to believe the Wright Brothers did it all, when in fact, all they did was add a motor. Important for sure. But, the air-foil was really what got us into the sky.

[@mickeythompson9537]

Love those antique LEDs / miniature HAL 9000s!

[@angrydove4067]

Lovely LEDs, I am sick of the super bright ones we suffer on everything now.

[@ezterry]

Will need to add that falling upwards to my reading list! Wonderful set of mailed in items.

[@tvtoms]

Archer breadboard sighting too.

[@michaelmoorrees3585]

14:12 - That East German 7 seg display, next to that red TO-92 Motorola LED. Those Motorola jobs, are the first LEDs I ever got, back ~1974, when I was in high school. Still have a few.

[@Allan_aka_RocKITEman]

I always wondered if Joseph Kittinger, during any of his high altitude balloon jumps, ever yelled -- or thought of yelling -- *_"GERONIMO!"_* when leaving the balloon gondolas...😊

[@simontay4851]

No, you would still get lost on the London underground, even with the map. What i don't like about the tube map is that it doesn't tell where stations are in relation to tourist attractions and other things. Some stations are close enough together that its often quicker to walk.

[@btruj2507]

The black foam the LEDs are impaled in is antistatic foam, save it. Love your vids.

[@horusfalcon]

Thanks for the book recommendations! Those dovetail neatly with other research I'm doing on LTA flight, and I will definitely be picking them up for a read. Ebooks? (I'll find out..)

[@msylvain59]

12:50 The company is RFT (Rundfunk- und Fernmelde-Technik), VEB is just a acronym for "people's owned company" ( Volkseigener Betrieb)

[@longdarkrideatnight]

Yes they still make tube maps, picked one a few weeks about myself.

[@ibanezleftyclub]

I’ve used the red metal can Russian ones in LED clipping circuits in guitar overdrive pedals, they work great

[@kaasmeester5903]

Those LEDs took me right back to my childhood. I had one of them small multi 7 segment displays with lenses over the LEDs, though with fewer digits. Never had a good project for them though (and multiplexing displays were a little beyond my skills at the time 🙂)

[@CarlVanWormerAE7GD]

Your LEDs reminded me of Junque in my OPTO bin. Would you like to have some TIL306 (numeric display with logic) or HPSD2000 (4 character alpha-numeric display) to add to your collection?

[@gerryroush8391]

I home built frequecy counters with them for the fun of it. Reverse engineering seval different schematics

[@ClausB252]

As a collector of programmable LED calculators, I recognized that TI display from the SR-5x series. The SR-56 was my first home computer in 1976.

[@CalculatorObsessed]

Yes, it’s the display from the second generation classic SR-5x series. The first generation used boards with discrete seven segment displays, and the later ones in Majestic guise had the LEDs on the same PCB as the calculator chip.

[@joeteejoetee]

I loved the muscle-memory soldering of A wire, to another wire @ 13:10 -> onward because me and your subscribers love soldering like that too!

[@KarmaElectronics.]

nice display.

[@brianclimbs1509]

I wonder if the hot spot would go away with an IR filter...?

[@scose]

Is the bubble display multiplexed? One pin per segment, one per digit?

[@tomleech9753]

I loved that intro.

[@dav1dbone]

Hey Fran(guys), I'm a long time subscriber, looking for some recommendations on hot air gun equipment,

[@thomasw2509]

The VQB71 LED display was made by the Berlin (GDR) based factory (WF) Werk fuer Fernsehelektronik. I worked at this factory from 1975-1978. I KNOW for sure. PLEASE do not spread disrespectfull & devaluating cold war terms. IT was NO "EAST Germany", it was the German Democratic Republic. Accept.. Thanks Cheers

[@mrvaportrailz]

Thanks for cool content Fran!

[@BlueDragonArt]

This was really fascinating. Enjoyed watching :D

[@pongisan3658]

Wondering if that weird hotspot you get on the camera while viewing the red LEDs is near IR emission the sensor is picking up?

[@rmora1]

The wright brothers did very little. Gustav whitehead should get all the credit not the wright brothers

[@isarwasser5271]

I love your channel. I have a request, could you activate the translation. Greetings from Germany.