Almost 25years, but that windowed EEPROM kept its program; amazing. My few year old dish washer packed up without any warning. Seriously, technology has come a long way in the last 20 years. Thanks for the video.
In any other country this eprom would have been erased by uv light I think. Thanks to the cloudy British weather this did not happen.😜 time to put a sticker on it.
Ahhh those good old electronics, those were the days. Very neat construction and excellent project. Now just bring the EPE fruit machine back. Thanks I enjoyed this video, thanks again Julian.
You amaze me JUlian, to be able to remember the keys used to type in letters so far back in the 90s. Heck I at times have problems remembering this morning!!
Hey Julian. I built this project when I was in TAFE. I used double sided PCBs. I also ordered the programmed ROM from you and modified it so the pound sign came up as dollar signs. I changed the buzzer for self osilate version. Small world. (I'm in Australia)
Very cool. Brings back a lot of memories of early projects with Z80s and 8081 microcontrollers. It is amazing that we can now do all of this with a single tiny PIC microcontroller for just a couple of bucks. Thanks for the trip down memory lane.
AllTheGearNoIdea please give it some sort of eprom-based keypad when you do. Should make programming messages a lot easier. P.S.: please post it on CZcams so people can see it. Would be awesome!
Excellent project. Quite happy you shared. Having seen this I like the idea. Think I will dig up some of my old projects and put them up. Immortalize them assuming CZcams does not go down.
The 5 button keypad reminded me of the Quinkey from the 80s where, if I remember correctly, the keys for each letter were supposed to resemble the letters themselves.
I really appreciate the tutorials on the beloved cpu Z80, I had a subject on the processor while studying electronics in the 90's, greetings from Rancagua, Chile
I still have a Z80 Morse Code generator I built in the late 70's on a breadboard. I use to erase such eproms in bright sun light for a couple of days or more.
Create an arduino code that translates keyboard keys or "type and send" through serial to button presses for easy programing! A mix of old and new technology. Just one pulse on each of the 5 switches from the arduino.
Time for an updated Z80 project I think, plenty of interest judging by the number of retro Z80 designs being published on the internet. One that came with a monitor program would be ideal. Better than that boring Raspberry Pi where everything is done for you.
I was working on such a design a while ago, but ran out of time. Maybe combine a low-end FPGA (for IO interfacing) with an Z80? We could also use flash instead of RAM or ROM by interfacing a SPI Flash through the FPGA.
I remember using an instrument way back in 1978 that was basically an audio spectrum analyzer, used to properly set your equalization so that you didn't have any feedback. Unfortunately instead of a single large board to hold the LEDs the thing was constructed on a board for each column, which made it a real bear to work on...
Hello,I watch your videos, them are really helpfull and as well entertaining. Can you make a video about DC Voltage Stabilizer with Adjustable Series Element? Because I can't find anything related on the internet. I need to understand the circuit diagram for my college and I'm sure you can help me and other people interested. Thank you!
I've got a Z80 along with ram chips and windowed rom chips which I pulled from an old large format plotter a few years back. Been wondering what to use them for (trying to ignore the obvious speccy clone).
Well done on remember your keycodes... even if you do keep your old projects in the hoover bag. ;) My hovercrafft is full of eeels... my hovercrafft is full of eeels.
Did you add the blue LED at a slightly later date? I thought they weren't commercially available until '94. I can't remember any prices, I just remember them being upsettingly expensive at the time :D
Fantastic work Julian! If time and money allowed it, I'd love to build something like this! Also, when are you planning on continuing the 8bit computer series?
Almost 25years, but that windowed EEPROM kept its program; amazing. My few year old dish washer packed up without any warning.
Seriously, technology has come a long way in the last 20 years. Thanks for the video.
G Yogaraja a single eeprom Vs a complex system consisting of mechanical, electromechanical and electrical assemblies.
I noticed the most important built-in message is available:
1. MY HOVERCRAFT IS FULL OF EELS
Good work.
@Luke Drumm ...MEIN HOVERCRAFT IST VOLL VON EELS
14. ABANDON HOPE ALL YE ENTER HERE!
In any other country this eprom would have been erased by uv light I think. Thanks to the cloudy British weather this did not happen.😜 time to put a sticker on it.
In Australia, we erase the EEPROM's after 11PM, so the epoxy doesn't melt from the heat.
Darth KegRaider no we don't! Haha. I'm from Au too. The thermosetting plastic doesn't melt in high heat, it burns
He might've had a label on it, and it fell off recently
🎼🎶If you like it then ya shoulda put a sticker on it!🎤🎵
Love the hand controller for programing it nice idea.
With all the built-in features and documentation, looks like a commercial product.
Very nice,
Thanks
+Mohammed Algailani It was a magazine published project.
Ahhh those good old electronics, those were the days. Very neat construction and excellent project. Now just bring the EPE fruit machine back. Thanks I enjoyed this video, thanks again Julian.
You amaze me JUlian, to be able to remember the keys used to type in letters so far back in the 90s. Heck I at times have problems remembering this morning!!
And everything on single layer PCB with hand soldered bridges. This kind of projects were fun!!
Probably you can boot the display and return 50 years later to find that is still working perfectly. Great build Mr. Ilett!
Hey Julian. I built this project when I was in TAFE. I used double sided PCBs. I also ordered the programmed ROM from you and modified it so the pound sign came up as dollar signs. I changed the buzzer for self osilate version. Small world. (I'm in Australia)
+Nick D Oh cool, I probably have your order letter in my loft somewhere.
Fantastic! Great job Julian!
educ8s.tv Big fan of you both here!
Without further ado: Hi! You here, too?
Hey! I am watching Julian for a long time! He is doing a great job here!
Very cool. Brings back a lot of memories of early projects with Z80s and 8081 microcontrollers. It is amazing that we can now do all of this with a single tiny PIC microcontroller for just a couple of bucks. Thanks for the trip down memory lane.
I love Z80 projects. This one looks so well done and so carefully documented! Wonderful job.
Impressive project! How on earth do you remember the key combinations on a project from the early nineties?! 😮
I have just started playing with Z80s for the first time so really enjoyed this as I’m thinking of building something similar. Thanks for sharing
AllTheGearNoIdea please give it some sort of eprom-based keypad when you do. Should make programming messages a lot easier.
P.S.: please post it on CZcams so people can see it. Would be awesome!
Matheus Moreira if you have not already seen it here is 4 videos on my recent z80 kit build czcams.com/video/8ncGNQhVOQs/video.html
Excellent project. Quite happy you shared.
Having seen this I like the idea. Think I will dig up some of my old projects and put them up. Immortalize them assuming CZcams does not go down.
The 5 button keypad reminded me of the Quinkey from the 80s where, if I remember correctly, the keys for each letter were supposed to resemble the letters themselves.
I ask myself who has downvoted this? Great project.
Wow, the fan-out must be crazy!
New video from Julian. Was going out for a jog but saw this and cracked open a tin.
I really appreciate the tutorials on the beloved cpu Z80, I had a subject on the processor while studying electronics in the 90's, greetings from Rancagua, Chile
Excellent work Julian. Thanks for sharing with us!!
That was great fun watching you explain one of your early inventions!If you have any more, this is a great subject!
Another enjoyable video, Julnat!
ELLO - Electric LED Light Orchestra ?
Great project and a lot of fun to see it running.
"My hovercraft is full of eels!"...... Hilarious!
Oh, yes, the infamous phrase that (as we all know) would later be adapted to the big screen as the 2006 action film "Snakes on a plane".
maybe donate it to the Bletchley Park museum...dust and all!!
Amazing that "0's" and "1's" didn't change over the years!
Wonderful! Amazing it still works too.
This is absolutely brilliant. You should have taken this on Dragon's Den, I reckon you could have made millions. I would buy one
Great project
Very impressive!
Great project Julian!!! Love it!!! Great Fun and it still works!!!
Lovely bit of work Julnat :D
13:11 My hovercraft is full of eels! The mind boggles. Thanks for sharing a fun project, Julian.
My goodness my that's so very cool!
that is some might fine neat work.
I used to love working with Zilog's Z80! Great project!
👏Well programmed sir! 👏
Emojis from the ‘90’s, that’s awesome. :)
Amazing! Thanks for sharing this great project.
I don't envy whoever had to drill all those PCB holes! ;)
Cool project, thanks for sharing.
Nothing like digging up your old project, only to have forgotten how it even works :P
Brought back fond memories of the Z80. Awesome job on the row and column construction, must have taken ages to solder all that lot together.
+David Webb Yeah, more than 2000 solder joints.
Very cool! I like it. Making a modern version might be a fun project, too.
Nothing wrong with that! Love how the boards are tidy.
great as usual
So cool!
Very impressive work :)
Thanks :)
I still have a Z80 Morse Code generator I built in the late 70's on a breadboard. I use to erase such eproms in bright sun light for a couple of days or more.
Create an arduino code that translates keyboard keys or "type and send" through serial to button presses for easy programing! A mix of old and new technology. Just one pulse on each of the 5 switches from the arduino.
Very nice. You should make it into a CZcams subscriber counter.😁
+Bill Mears Awesome idea. I might actually do that. Cheers Bill.
For such application it is easier to use esp8266. I have such videos on my channel. Z80 has no WiFi so alone is useless :)
ESP connected via the PC interface Brett showed off perhaps, or emulating that keypad?
cbm80amiga I don’t think that’s the point.
I just got my DSO138 Oscilloscope I ordered because of your video :D Lets get to soldering! I hope it isnt broken :P
HELHO. I don’t know why that made me laugh so much! Thank you!
Awesome!
I would love it if you tried to remake this project and see the size and functionality differences from 1993!
Was the idea to sell them? Looks like a lot of effort went into the manual too.
Looks like a proof-of-concept work-up.
It is important that you can display "my hovercraft is full of eels" with a search term.
Wow as a Z80 FAN this very impressive. Very nice job.
Can you post the assembler listing please.?
Hi Julian,
what´s your professional background? Electrical Engineering?
i love the z80
Time for an updated Z80 project I think, plenty of interest judging by the number of retro Z80 designs being published on the internet.
One that came with a monitor program would be ideal. Better than that boring Raspberry Pi where everything is done for you.
I was working on such a design a while ago, but ran out of time.
Maybe combine a low-end FPGA (for IO interfacing) with an Z80?
We could also use flash instead of RAM or ROM by interfacing a SPI Flash through the FPGA.
Nice display. ESP WiFi module instead of the keyboard would make nice addition.
Cool Beans, Julyan!
That is the Company I work for! HelHo. It is deep down in the South. :-)
Very nice. You should cover it in saran wrap or something to keep it in good condition.
13:15 'My hovercraft is full of eels' Haha LOL
Yay... My hovercraft is full of eels!!!!
It's a pity John Cleese isn't here to see you finally deliver your killer punchline!.
My nipples explode with delight
Leave them to breed. It is their home now.
I'm amazed you can remember any of the input codes. I don't think I would be able to.
fantastic project! you should do a re-visited build video with RGB lights. let us know what to order and build along with you as the videos progress
very interesting
A sweet retro system! :-) nice job dude :-)
Ussjoy, Julnat! I enjoy your video, keep up the good work!
Julian, put something on the EPROM. The ambient UV levels will slowly erase it.
Nice.
awesome.. i jad a computer based on a z80 in the early 80's.
MSX-XPRESS 👍😆
this well cool sir !!
Nice. You did get it out in 2014 though (LED Matrix Displays and Non-Optimal Byte Orientation).
And people are trying to patent input devices like this one. You beat them by several years :D
"No flash memory back in the 90's" - AFAIK Flash is an evolution of EEPROM, so you could say there was. (Unless you didn't have EEPROM either)
13:15 My hovercraft is full of eels... (Where have I heard that before??? Ha ha ha)
nice work julyan ;)
I love that keypad! Now I really want to see someone replace their computer's keyboard with a 5 button pad like that! 😂
This would make a cool vu meter
I remember using an instrument way back in 1978 that was basically an audio spectrum analyzer, used to properly set your equalization so that you didn't have any feedback. Unfortunately instead of a single large board to hold the LEDs the thing was constructed on a board for each column, which made it a real bear to work on...
Awsome
Great stuff Julnat! I would love to know how you made the pcb back then.
you would've etched the board at home
Hes, that looks like home etched, since it's single sided and there's no solder mask.
Hello,I watch your videos, them are really helpfull and as well entertaining. Can you make a video about DC Voltage Stabilizer with Adjustable Series Element? Because I can't find anything related on the internet. I need to understand the circuit diagram for my college and I'm sure you can help me and other people interested. Thank you!
I've got a Z80 along with ram chips and windowed rom chips which I pulled from an old large format plotter a few years back. Been wondering what to use them for (trying to ignore the obvious speccy clone).
How easy it looks like now and how hard it had to be 25 years ago
I reckon you could have made a killing patent protecting your 5 key keyboard and the keystroke commands and licensing them.
Well done on remember your keycodes... even if you do keep your old projects in the hoover bag. ;)
My hovercrafft is full of eeels... my hovercrafft is full of eeels.
15:30
Helho and thanks.
Cool etched design BTW.
Neat!
Hi Julian, interesting project.
Can you plase elaborate on how the keypad works to encode the characters and commands?
T Trindad have a look to the same project from Julian... czcams.com/video/Wxja2EbvZJo/video.html
Cool Beans! ;)
Did you add the blue LED at a slightly later date? I thought they weren't commercially available until '94.
I can't remember any prices, I just remember them being upsettingly expensive at the time :D
+Pook365 It could have been 94 if the PCB was designed in 93. The blue LED was about £3 from Maplin if I remember correctly.
Fantastic work Julian! If time and money allowed it, I'd love to build something like this!
Also, when are you planning on continuing the 8bit computer series?
That is VERY impressive! How did you design/build the PCB back then? There wasn't the modern CAD/simulation software we have today.
such an awesome project and so well executed, could have sold these for sure. how long did it take to complete?
nice project! did you etch these boards yourself? looks quite clean.
+waldsteiger Yes, I had all the PCB etching stuff back then.
currently manually reading out a salvaged pc bios flash rom, inspired by your videos. thanks!
Lovely project, can't complain here :) I wonder though how you made boards back then, especially that giant display one.
+MrJohhhnnnyyy The display PCB was exposed using sunlight.
Julian Ilett Hmm, photoresist then. The traces look quite sharp, you must've printed the transparency for it :)