EXPOSING MYSELF - UVC Radiation EPROMs

[@boxingday11]

Some vital information on that EPROM 🤣😂👍

[@allthegearnoidea6752]

Thanks for watching and comments. Best regards Chris

[@krellft]

Classic flash back memory ... yep we used that box with ready made UV sensative PCBs and the spray, at the Uni back in the 80s ... gotta love the 'old' RS Components ...

[@allthegearnoidea6752]

I have such a lot of parts and tools from RS back in the day. Thanks for watching and comments

[@allthegearnoidea6752]

Hope to see you Sunday at 11:00 - sweet dreams

[@Codeeze]

I'll be there, to love and comfort you...

[@oldblokeh]

I'll be there, too, with my UV protective sunglasses and factor 30 sunscreen applied. Took me ages to find it among all the windchill factor 50 lotion.

[@allthegearnoidea6752]

@@oldblokeh all sensible precautions!

[@allthegearnoidea6752]

@@Codeeze thanks Paul - Bring me up some hot chocolate

[@TonyAlbus]

That was interesting, yes i also remember erasing was 10-15 minutes... nice how you bring also so many other facts in a very nice way... thanks!

[@allthegearnoidea6752]

Hello Tony - Sometimes its nice to do work on simple things but sometimes they end up being quite interresting. Thanks for watching and comments Chris

[@Theoobovril]

Much enjoyed, Chris...

[@michaeldranfield7140]

How about a mercury vapour discharge lamp and break off the outer bulb to just leave the quartz element exposed without the fluorescent coating?

[@allthegearnoidea6752]

I guess it’s what you have to hand. But those Mercury lamps do have a several peaks and one is at the correct frequency for UVC erasing. Thanks for watching and comments regards Chris

[@TheDefpom]

Lovely, I would have loved to get that exposure unit for making PCBs a dozen years ago… I actually used a dual standard fluorescent light, as they give out UV too, they rely on the polycarbonate diffuser to block the UV.

[@allthegearnoidea6752]

Hopefully have ago making some PCBs again I have some projects planned in the future

[@TheDefpom]

I’ve had bad EPROMs in one of my Datron’s

[@alanvandusen76]

Interesting data you have on the old eprom. 🤪

[@allthegearnoidea6752]

Yes isn’t it. Maybe random corruption

[@DJ_Cthulhu]

Somebody bought it for me. Must try that excuse myself 😉 BTW, UVC LED's can be used for zapping eproms and such, I made a homebrew device for erasing Psion Organiser memory packs. (Ahh, you mentioned leds later in the vid) 🖖

[@allthegearnoidea6752]

Actually I have tried that excuse and I’m just collecting it for someone or I’m repairing it for someone all grown thin now with the wife. Thanks for watching and comments. Thanks regards chris

[@thomasives7560]

Great tip on the UV eraser, thanks! *Question*: Could you use the UV-cure epoxy to make traces on a PCB? In other words, draw the traces carefully with UV epoxy, expose it to UV, then etch the PCB? That would be useful for a quick-and-dirty PCB project, like a filter or crossover. Not sure how the epoxy would come off, maybe a little heat and a scraper? Great video, love the channel, cheers!!

[@allthegearnoidea6752]

You could do that but you may as just draw on the PCB using a permanent marker. That’s how I made them before electronics CAD was a thing

[@legless1956]

I've got a UV eprom eraser and my tube is clear and it has a blue glow inside, but mine has a drawer and it won't work till it's closed. Also it has a built in timer.

[@allthegearnoidea6752]

Yes I had similar units back in the day when I wrote software for microcontrollers. Unfortinately it all went in a skip once EEProms became available. I dont miss the waiting time.

[@BoB4jjjjs]

And they used to panic about taking the label off the top of an EPROM for a few seconds, lol.

[@allthegearnoidea6752]

I used to panic back in the day LOL

[@raceingdemon6464]

Fabulous Video As Always Chris That UV-cure epoxy is The Dogs Ding Dongs Picture This Back in The Day Me Trying To Make a Pcb For a Guitar Phazer I Think It Had About 8 I.C.s I Traced The Circuit On Traceing Paper Stuck a Piece Of White Fablon On The PC Board Then Stuck The Traced Circuit On Top Of The Fablon And With a Sharp Craft Knife Proceded To Cut All The Unwanted Fablon Out Took Me Bloody Hours But When I Etched It With Ferric Cholhride It Dident Turn Out Too Bad Thanks For Uploading P.S. You a Good Friend Of Mr Putrid Chris he he Regards mike

[@allthegearnoidea6752]

Back in the day I used to draw on the copper using marker pens and had some stick on transfers for the IC pads. Great day and nothing wrong with doing it today if it works. I enjoy keeping these old skills alive makes me feel young. Thanks for watching regards chris

[@AverageJoe2020]

It's the little things...

[@mackfisher4487]

UV Cement, I knew that industry was using UV activated glue's and cements after seeing this video I think I'll give it a try though. I seem to have horrible luck gluing parts together.

[@allthegearnoidea6752]

I think it’s ok in terms of strength the main bonus being the very fast curing time. Thanks for watching and comments regards chris

[@xyredmax]

They used to be so expensive - I still have one, much used along with all my other PCB making kit. Mind you, you can buy 5 ready made boards from China for less than a plain unworked board!

[@allthegearnoidea6752]

Your quite right about the cost of making the boards its much easier to just buy them from china and let them have the trouble. Still sometimes it is nice to just do the craft things.

[@xyredmax]

@@allthegearnoidea6752 That Mega site looks like a good toy shop :)

[@TechneMoira]

I wonder if your Eprom was meant for the Russian market... if so, I hope they have UV erasers available before plugging them into someone's device or pacemaker or such...

[@allthegearnoidea6752]

Well it was chosen completely at random. I actually have no issues with the Russians, lovely warm hearted people in my experience but I do have an issue with Putin.

[@TechneMoira]

Of course. I understand completely and I share your opinion about Poutine. I was actually just being ironic, you know. Although it is kinda funny to imagine such an Eprom would end up in one of his personal devices. Years ago I had the idea of examining random ROMs just for the fun of discovering obscure or mysterious code or information left behind by some programmer. I might still have a go at it if I end up buying one of those little ROM reading tools you showed

[@shinzon0]

Of course you can change unprogrammed bits to programmed ones, without erasing the eprom :)) by just flashing over it...

[@radio-ged4626]

I was OK until you got that gadget off your wife, totally lost now. Further info; you only have one of a pair of EPROMs, you have the even EPROM called Putin. There is an odd EPROM called Boris. Both have essentially the same data.

[@allthegearnoidea6752]

Yes I also use PCBway and some others. But occasionally nice to roll my own

[@radio-ged4626]

@@allthegearnoidea6752 Sorry I've edited my comment and made your reply look mental...sorry about that.

[@allthegearnoidea6752]

@@radio-ged4626 no worries

[@demofilm]

lol i think the data is interesting to run