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BigZaphod
United States
Приєднався 19 жов 2011
I built an electronic Etch-A-Sketch without a microcontroller
I built an Etch-A-Sketch-like using a bunch of old logic chips and limited electronics experience!
-- Stuff
Dot Matrix Displays: amzn.to/3RAI5AK
Rotary Encoders: amzn.to/3VwFOr9
LogiSwitch debouncing ICs: logiswitch.com
Prototyping Boards: amzn.to/3RtXkvi
Chip Assortment Kit (with NE555): amzn.to/3x9cb6I
TTL ICs: amzn.to/40WH75c
BB830 Solderless Breadboards: amzn.to/3TkNPOY
Breadboard kit with components: amzn.to/3MYwfho
Power supply: amzn.to/3uAYxIE
Rigol DS1054Z oscilloscope: amzn.to/43C3v5m
PINECIL Soldering Iron: amzn.to/3xnKOGD
Multimeter: amzn.to/49PUg45
Antistatic mat: amzn.to/49RhcQi
My Wife's Books: amzn.to/47yt9Ji
(Maybe you and/or someone you know will like them!)
-- Stuff
Dot Matrix Displays: amzn.to/3RAI5AK
Rotary Encoders: amzn.to/3VwFOr9
LogiSwitch debouncing ICs: logiswitch.com
Prototyping Boards: amzn.to/3RtXkvi
Chip Assortment Kit (with NE555): amzn.to/3x9cb6I
TTL ICs: amzn.to/40WH75c
BB830 Solderless Breadboards: amzn.to/3TkNPOY
Breadboard kit with components: amzn.to/3MYwfho
Power supply: amzn.to/3uAYxIE
Rigol DS1054Z oscilloscope: amzn.to/43C3v5m
PINECIL Soldering Iron: amzn.to/3xnKOGD
Multimeter: amzn.to/49PUg45
Antistatic mat: amzn.to/49RhcQi
My Wife's Books: amzn.to/47yt9Ji
(Maybe you and/or someone you know will like them!)
Переглядів: 10 398
Відео
I made a music box with some 555 timers and an old RAM chip
Переглядів 8 тис.2 місяці тому
It makes music! Well... it makes notes! Well... it makes sounds in a sequence that, if you're feeling generous, could be called a song! Stuff Chip Assortment Kit (with NE555): amzn.to/3x9cb6I Tiny DPDT slide switches: amzn.to/3wVl97H TTL ICs: amzn.to/40WH75c Assortment of push buttons: amzn.to/4a1A0Mv BB830 Solderless Breadboards: amzn.to/3TkNPOY Breadboard kit with components: amzn.to/3MYwfho ...
Addressing 4-bit static RAM with an 8-bit counter
Переглядів 8023 місяці тому
I combined two of my previous circuits into something just about equal to the sum of their parts. I also experimented with a new style for this video, so let me know if it works. Links Synertek 1981-1982 Data Catalog (SY2112A): web.archive.org/web/20221113021101if_/archive.6502.org/datasheets/synertek_data_catalog_1981_1982.pdf Texas Instruments SN74LS191N Datasheet: www.ti.com/lit/ds/symlink/s...
Learning how to use my Rigol DS1054Z oscilloscope
Переглядів 2,4 тис.3 місяці тому
Thanks to GeekAndDad, I have my first oscilloscope! Now I'll have to learn how to use it. Links GeekAndDad on Mastodon: mastodon.social/@GeekAndDad Stuff Rigol DS1054Z oscilloscope: amzn.to/43C3v5m TTL ICs: amzn.to/40WH75c Assortment of push buttons: amzn.to/4a1A0Mv BB830 Solderless Breadboards: amzn.to/3TkNPOY Breadboard kit with components: amzn.to/3MYwfho Power supply: amzn.to/3uAYxIE Multim...
Building an adjustable clock source and using it to count to 255
Переглядів 9593 місяці тому
A digital circuit project I have in mind may need a clock I can start, stop, and step so I built Ben Eater's adjustable clock module (with some modifications) and hooked it up to an 8-bit counter with pretty blue LEDs. Links Ben Eater's clock module page: eater.net/8bit/clock Ben Eater's clock module videos: ua-cam.com/video/kRlSFm519Bo/v-deo.html, ua-cam.com/video/81BgFhm2vz8/v-deo.html, ua-ca...
Experimenting with static RAM
Переглядів 3,7 тис.4 місяці тому
Manually reading and writing bits using a static RAM chip from 1984. Links Synertek 1981-1982 Data Catalog: web.archive.org/web/20221113021101if_/archive.6502.org/datasheets/synertek_data_catalog_1981_1982.pdf Texas Instruments SNx4LS245 Data Sheet: www.ti.com/lit/ds/symlink/sn74ls245.pdf Stuff Logic Probe: amzn.to/3SfDRz4 TTL ICs: amzn.to/40WH75c Power supply: amzn.to/3uAYxIE Breadboard kit: a...
Atari punk console piano synth thing
Переглядів 1,5 тис.4 місяці тому
After a brief detour building a "piano keyboard" for my 555-based noisemaker circuit, I evolved it into an implementation of the Atari Punk Console. Links Atari Punk Console: sdiy.info/wiki/Atari_Punk_Console 555 Timer Tutorial: www.build-electronic-circuits.com/555-timer/ 555 Timer Calculator: www.build-electronic-circuits.com/circuit-calculator-conversion/555-timer-calculator/ Texas Instrumen...
Generating sound with a 555 and a speaker
Переглядів 1,5 тис.5 місяців тому
I took my prior 555 timer circuit and hooked up a speaker to synthesize some less-than-pleasing sounds! The basic 555 circuit was first built in an earlier video (ua-cam.com/video/ajbUbB27jPE/v-deo.html) and I think it was modified during the counter series (part 1: ua-cam.com/video/4waJTAkkUM8/v-deo.html) although I can't quite remember for sure. Links Texas Instruments xx555 Precision Timers ...
I fixed my 4 digit counter circuit (The Great Multi-Digit Saga: Part 3)
Переглядів 5295 місяців тому
Talking about the problems I had fixing my 4 digit electronic counter circuit. This turned into a multi-part miniseries: Part 1: ua-cam.com/video/4waJTAkkUM8/v-deo.html Part 2: ua-cam.com/video/-gGACdAnjh8/v-deo.html Part 3: (you are here) Links HLF SN74LS160N Data Sheet: hlf-ic.cn/upload/202108/SN74LS160N HLF.pdf HLF SN74LS162N Data Sheet: hlf-ic.cn/upload/202108/SN74LS162N HLF.pdf (Possibly w...
I thought 4 digits would be easy but everything goes wrong (The Great Multi-Digit Saga: Part 2)
Переглядів 1,8 тис.5 місяців тому
I tried to add 2 more digits to my 2 digit counter circuit, but it didn't go well. This turned into a multi-part miniseries: Part 1: ua-cam.com/video/4waJTAkkUM8/v-deo.html Part 2: (you are here) Part 3: ua-cam.com/video/hWfS120Hbak/v-deo.html Links HLF SN74LS160N Data Sheet: hlf-ic.cn/upload/202108/SN74LS160N HLF.pdf HLF SN74LS162N Data Sheet: hlf-ic.cn/upload/202108/SN74LS162N HLF.pdf (Possib...
Upgrading the counter to a two digit display (The Great Multi-Digit Saga: Part 1)
Переглядів 7675 місяців тому
I expand the counting circuit I've been working on to support more than one digit! This turned into a multi-part miniseries: Part 1: (you are here) Part 2: ua-cam.com/video/-gGACdAnjh8/v-deo.html Part 3: ua-cam.com/video/hWfS120Hbak/v-deo.html Links HLF SN74LS160N Data Sheet: hlf-ic.cn/upload/202108/SN74LS160N HLF.pdf HLF SN74LS162N Data Sheet: hlf-ic.cn/upload/202108/SN74LS162N HLF.pdf (Possib...
My first 555 timer circuit
Переглядів 2,3 тис.5 місяців тому
In which I hook up a 555 timer IC and try to decipher how it works! Links 555 Timer Tutorial: www.build-electronic-circuits.com/555-timer/ 555 Timer Calculator: www.build-electronic-circuits.com/circuit-calculator-conversion/555-timer-calculator/ Capacitor Value Calculator: circuitdigest.com/calculators/capacitor-value-code-calculator NE555P Data Sheet: www.ti.com/lit/ds/symlink/ne555.pdf Stuff...
Fixing my counter's bouncy button
Переглядів 7 тис.6 місяців тому
A long tale of the trials and tribulations of debouncing my pushbutton! Links Debounce Your Noisy Buttons: hackaday.com/2015/12/09/embed-with-elliot-debounce-your-noisy-buttons-part-i/ Texas Instruments Hex Schmitt-Trigger Inverters Data Sheet: www.ti.com/lit/ds/symlink/sn74ls14.pdf Wolfram|Alpha: www.wolframalpha.com Ultimate Guide to Switch Debounce Series: www.eejournal.com/?s=Ultimate Guide...
I made a counter with a button and a seven segment LED display
Переглядів 5 тис.6 місяців тому
Follow along as I count up to 9 button presses on a 7 segment display! Links SN74LS160N Data Sheet: hlf-ic.cn/upload/202108/SN74LS160N HLF.pdf SN74LS162N Data Sheet: hlf-ic.cn/upload/202108/SN74LS162N HLF.pdf SN74LS48N Data Sheet: hlf-ic.cn/upload/202108/SN74LS48N HLF.pdf 7 Segment Display Data Sheet: www.xlitx.com/datasheet/5161AS.pdf 7 Segment Display: amzn.to/3viAu1l TTL ICs: amzn.to/40WH75c...
Hooking up a seven segment LED display
Переглядів 4,3 тис.6 місяців тому
I thought it'd be fun to hook up an old fashioned 7 segment LED display using the driver IC that came in the TTL chip kit! [This is my first attempt at a 4K video (still using an iPhone and a Yeti, but this time I captured with reincubate.com/camo/ instead of OBS). I also tried to improve(?) the audio levels in this one, but i find that whole a process a bit of a dark art so I don't know if it ...
Making an inverter from a transistor
Переглядів 4,2 тис.6 місяців тому
Making an inverter from a transistor
Trying to understand pull up and pull down resistors
Переглядів 2,3 тис.7 місяців тому
Trying to understand pull up and pull down resistors
Quest 2 controller repair: Fixing a drifting thumbstick
Переглядів 2,7 тис.7 місяців тому
Quest 2 controller repair: Fixing a drifting thumbstick
Building a 1 bit half adder took 2 whole people
Переглядів 1,2 тис.7 місяців тому
Building a 1 bit half adder took 2 whole people
Using an inverter to switch off the LED: Difficult when tired!
Переглядів 1 тис.7 місяців тому
Using an inverter to switch off the LED: Difficult when tired!
This was a really great video to watch. It was awesome to see you describe what you see and try to make sense of it. Real lab coat sleuthing there! The others are correct, that's ringing and, probably, some degree of capacitive coupling from your body to the circuit. I don't really work with the sorts of circuits you do, I'm an old-school tube amplifier guy, but the ringing (if you know about it) really jumps out. I think you might be able to filter it out or "snub" it like @JohannaHammond said, but it's probably not worth the effort for a breadboard circuit. Great video!
nunca pidas disculpas por si lo que estas haciendo suena a musica o no, en definitiva sigue siendo compartir conocimiento, compartir cultura de diferentes maneras, pero cultura igual, gracias por el esfuerzo ❤
thanks❤
Please make it randomly turn into snake and sell it as a Christmas Challenge gift.
I think you could squeze everything on only 1 or 2 breadboards, there's a lot of space you didn't used.
That is so cool. I never worked with those components directly (except for 555timers and debouncing-ics) that you used to store and set all the values. Would be nice if you could explain how they actually work. Like how is it that you turn the knob and the correct register is written and red. And how does it all connect withthe ram the ram. I'd never even think about making something like this without a microcontroller :D
Nice project, and simpler than I was expecting. By adding a few more address counters (and some retrace generation) It should be fairly easy to convert it to a proper raster video output like composite video or even VGA.
I've been wondering about actual video signal generation! I should try experimenting with that at some point - but I'll have to find an old monitor or something, probably. Sort of wish I hadn't thrown all of my old stuff away 20 years ago. 😛
I replaced my stick but now the kids are telling me the left controller isn't connecting. Oh they threw it and put the battery back in upside down. Goodbye 1 hour.
Could I possibly confirm what the five ICs are along the top? Obviously it's the 2112 RAM in the middle? The image isn't *quite* clear enough to see.
The top row, from left to right: SN74LS32N, SN74LS93N, SY2112A, SN74LS244N, SN74LS08N.
@@bigzaphod much appreciated!
This is EPIC. Such a cool idea and I love how you told the story and put it all together!
love it! do you have a diagram of the circuit ?
Thanks! I do not yet have a schematic. I'm trying to figure out KiCad so I can maybe put one together, though.
Loving your vids. I love the way you talk through the process and say your logic out loud. I don't think that enough people do that and I feel like it's just good for everybody. Also diode steering is a way to get a perfect 50/50 but it does add a few components but realistically most of the time of true 50/50 is not needed at all but I also feel the need to keep saying symmetrical where possible LOL
This qualifies as a "look what I can do". Not DIY friendly.
Really nice project and you explained the thought process behind the design really well! Thanks!
the resolution of a Etch-A-Sketch is 300 x 200 the Etch-A-Sketch screen diminisons are 154mm x 108mm IMAX aspect ratio the Etch-A-Sketch pointer is 0.5mm resolution:308 x 216 round down to a reasonable format:300 x 200
All using discrete logic - love it! Nowadays it’s hard to find folks who enjoy designing circuits without microcontrollers. My employer just recently won a contract where micros are not allowed for the control mechanism. Now I get the challenge of designing it using discrete logic in a small footprint. Can’t wait!
CMOS is all I use on my channel.
The REAL problem is that your "notes" are completely out of tune... you could have googled for the propper frequencies.
With the current circuit design it's literally impossible to properly tune more than 4 notes.
“Did I… Did I just make a mullet?” 😂
Very impressive, well done!
Love it.
Nice job finishing! Always the most challenging part for me.
This is one of the coolest things I've ever seen! Beyond awesome!
02:27 since you're working with a lot of digital stuff, all the complex triggers and the 100MHz bandwidth (if you hack it, which is very easy to do) will certainly not be overkill :) The 4 channels are also extremely nice, keep in mind the DS1054Z will get a bit slow when all 4 of em are turned on, and when you also turn on the FFT it'll become barely useable. I've got a DHO804 (which is a lot nicer) but a DS1054Z is also more than enough for electronics beginners. As a tip, set the probes to 1X when measuring very small signals (current trough a resistor, transistor saturation voltage, etc) and 10X for everything else, since on 10X the bandwidth is much higher. Rigol themselves have videos on YT on how to use most features of the oscilloscope, but most stuff is universal to all digital oscilloscopes.
this dude makes redstone builds in real life
What’s with your youtube electronics diy clowns and this need to use usb c soldering irons. Just buy and ac soldering iron ya goof
I thought an e-ink display would look cool, then I thought it'd look like a normal etch-a-sketch and remove the point of making it electronic
force nut into plastic with soldering iron.......
This old Tony
Ooooh this video is gonna get big. Excellent job!
What a great idea. I like the way you approached it. Thumbs up and thanks for the idea with the LS30. Greetings from Germany.
your wrist watch strap is too tight.
awesome project! turned out great! 😀 you could also add a motion sensor with a low sensitivity, so that when you shake the electronic Etch-a-sketch briskly ,it would trigger a total refresh of all LED's or have it so that pushing one of the buttons that would clear the last LED(S) that are lit, for a correction or edit function.
I somehow forgot to mention it, but pressing the right button clears the screen. I like the idea of a toggle mode for erasing.
@@bigzaphod I think you might have, and I did not cach it 😀
you can use threaded inserts as "bolts" for screws. just need solder iron on 200. Or you just could put solder iron on 200 and push to bolt...it will goes into as into butter.
This is genuinely so cool.
Good stuff
That was so ingenious and fun to watch! Congrats for the great work ❤ I even learned about some chips I didn't know about, or never understand how they worked. Thank you!
"...without using a micro-controller" !!! Subcribed
This is so cool
Cool project. And also cool it was not done with an Arduino :-) Do you watch This old Tony by chance?
Thanks! I’m not a regular viewer of This Old Tony, but I do watch his stuff from time to time.
This is so epic!
One almost forgotten method of prototyping a ton of wires like this is called wire wrapping. You buy a wrapping tool and 30awg or so wrapping wire. You strip about 1/2 inch or so of the wire, slide it in the tool and then put the tool over the pin. Thin you just twist like a screwdriver. I find it significantly faster then soldering each wire. You still need to solder some things but you definitely save time over all. If you do many prototypes it's something to consider. So many people today have no idea this even exists. Just a thought and something to try in the future. Once everything is working you can always add some solder to the pins to permanently fix them after.
It's definitely making a resurgence. For a while wirewrap sockets were expensive and decent wrapping wire was hard to source but neither is the case anymore.
very impressive. i wouldn't advise to wear 2.4ghz+cpu on your wrist though "Results of the study indicate that using a radio frequency electromagnetic field (2.4 GHz) has a clearly negative effect on the metabolic activity of glioblastoma cells." "This study indicated that RFW might cause structural changes and oxidative stress in the heart. Also, exposure to radiofrequency decreased total antioxidant activity in heart tissue with histological changes, including myocardium hypertrophy and decreased number of myocytes."
This is such a good video. I think your channel could BLOW UP if you focus on thumbnail and title a bit more. I almost didn't click because the thumbnail looked a bit bland
Thanks! I don't really know how to make the thumbnails pop, tbh. Hopefully I'll figure that out at some point.
@@bigzaphod just search for a tutorial XD cool video btw
I don’t know what’s more impressive? Actually doing it in discrete logic, or the art that was produced on it?❤
This was really fun to watch. I know it’s a TON of work (the videos I mean), but the end product was really good!
you could make it into the snake game, btw love your content, I would be grateful if you would mind checking out mine
Great video! You should absolutely run it up as a PCB. I wonder if it's worth throwing in some logic to turn off drawing, so you can move the cursor to where you want it then draw. Or alternatively flip the bit of what is being written, so you can erase bits you have gone over. I'd *love* to see some schematics for the whole thing so I can see the bits the video glossed over a bit. Looks like a fun project for a makerspace.
Welp- I've just ordered 16 of these 8x8 led displays and some encoders.
hehe - have fun!
If you end up needing to do wiring like the display again, you might want to look into wire wrapping, a vintage technique. The wires are thin. You wind the stripped end around the pin. If you make a mistake, you can unwind and fix the mistake. Once it's working right, you can solder to make it more robust. This was a really cool idea for a project. Well done!
As I watched that part I thought, "He reinvented wire wrap from first principles."
Not sure wire wrapping would be easy to do with those particular LED display devices. Those LEDs have short pins - wire wrapping depends on a few turns of the wire getting wrapped around a pin, I don’t think those pins are long enough. The other challenge is the proximity of the pins to one another and the size of the tool used to do the wire wrapping - it could be tough to get at all the pins. Not impossible, but not so easy. Been far too many decades since I last watched the wire wrapping being done, so my recollections might not be quite accurate, but I still suspect that those LEDs might be tough to wire wrap. He used bread boards for everything else, so those components have no bearing on the use of wire wrapping.
as a hobbyist who repairs cassette decks I despise wire wraps. Connectors all the way!!
Magnificent! (Not a typical comment for me, but I thought it tied in well with the DS9 episode you waere watching. I should use it more often, it's a good word). I like the debounce chip, it seems crazy that someone has only come out with one of these recently. Thanks Sean, take care.
Nice... Well done sir.