Viewfinder CRT scope

[1BustedMyth]

One of the coolest things I have ever seen, the image is so crisp

[wolverene1234567890]

can i use a viewfinder from an vhs camcorder?

[rockman378]

i have a viewfinder tv screen and it has the origanal board its just i dont know the pin in and outputs.

coleton

[123324ben]

hey i have one of those but i dont know how to use it. i have a 4 wire ribbon strip coming out of the curcuitboard, i would guess that these are 2 for power, and 2 for control. if you could help with this it would be great(not to have to spend as much on an oscilloscope that is)

[meikewaldmann]

@123324ben

Hey ben,

two wires are for the power, of course. One of the other is for the video signal. The best way to find out which one are for power is to measure the voltage while the camera is on. Power should be about 5V. The video signal is difficult to find without oscilloscope. If you use a voltmeter it should be 1 to 2 V. Ground is mostly easy to find by a close look at the view finder board.

Be carefull with touching the board while it is powered. There is a high voltage part (500V)!

[321pocoyo]

very cute!

[puffadder01]

how did you find the pin volts?

[unnaturaltragedy]

I have tried to get video from 2 different viewfinders, fried them both. Its a tricky thing to get working (IMHO).

[surferboy36O]

The video was cool until you put that shitty music.

[XELA2T]

Ich finde Deine hier vorgestellte Idee super schön.

Ich kann mir nur so gar keine Vorstellung von diesen orig. Kameras machen, waren das "jedermann" Kameras? In welcher Zeit wurden die gebaut, und war der "Sucher " so etwas wie ein Kontrollmonitor etwa vergleichbar dem Display der heutigen digital Kameras? Konnte man die eigene Aufnahme auf diesem "Sucher " auch wiedergeben? Video V8 war das MAZ oder FAZ?

[uploadJ]

Wow. Some fine detail on that little CRT!

.

.

[MrThomassss]

hab gerade bei ebay eine alte kamera ersteigert und wollte wissen wie du die röhre ansteuerst

[coondogtheman1234]

thats awesome. now can you feed a standard composite video signal into this thing and have it show on the tiny screen or do you need some other circuits?

[Phagedaena]

very cool

[tonsilol]

Hallo!

Ich will dir nur mitteilen, dass es

Nutzern aus Österreich nicht erlaubt ist, dein Video anzusehen. (Aufgrund von "Uhrheberrechtsbeschränkungen"­.)

Youtube ist echt unmöglich!

[MrThomassss]

cooles teil

[paliver]

Kühl! Ich möchte wissen ob Du es auch schaffst die Röhre als Mikrofokus-Röntgen gerät zu betreiben :-)

[pantyflash]

Like, very cute oscilloscope. Way to go, babe!

[LittleSunny86]

Hey!

Ich find das Video klasse, aber man sollte es au mal live sehen! Unvergleichlich!

Liebe Grüße

Jenny

[roberelbombi]

¿De donde era ese CRT?

[tommybshr]

do you have the schematic? anybody sell any kits? I have that tube.

[meikewaldmann]

Sorry for the late answer. I don't have any Schematic, but if you're interessted in CRT techniques, then I can suggest you the Philips EE2007 experimental kit. There are schematics for oscilloscope tubes.

There are no kits, but you could buy an old Hi8 Videocamera and remove the hole viewfinder. This is all what you need.

[bluanvil1]

So when can we expect to see the pocket sized ociliscope? I love it. It looks to be the beginnings of a tricorder. Keep up the good work. Hope things are well with you and yours.

Best regards Mark

[meikewaldmann]

Das ist eine gute Frage, ich weiß es nicht, da ich die Elektronik vom Sucher der Kamera verwendet habe.

[tonsilol]

Hallo! Tolles Video

Eine Frage habe ich:

Welche Heizspannung braucht die Röhre?

[adcurtin]

What power source does this take? Also, How many pins is the connector? I have one myself, but only the viewfinder, and I don't know which pins do what, its only got 4. It's from an RCA camcorder.

[TopARO]

2 would be power +-. The others would be the video and video ground. You have to experiment.

[adcurtin]

Any more info? I have a half inch CRT like these and I'd like to make a driver circuit for it, so I can hook to up to a video signal.

[Ragun5]

Funny... but can you show a fart on it too? :op

[meikewaldmann]

Yes, I've bought three old cameras for one euro from Ebay.

[RossofAmiga]

That's a great video Sir Waldmann. Where did you get the viewfinder from - Ebay? :)

Greetings from Sydney..

[eNeRGyKa]

Nice video, can you show also an TV-signal on it?

greets vom Koblenz