» Electronics »Stylish watch on TTL-microcircuits

Stylish watch on TTL chips



The clock on TTL microcircuits, built by Instructables author under the nickname AndrewMarshall, is made in a style very vaguely reminiscent of an experimental copy of Apple 1. For greater similarity, you can cover the plywood with dark lacquer, make the top wall inclined, and exclude the blue LEDs, because then they cannot be It was. But in its current form it turned out very stylishly.

The master compiles the clock scheme without taking into account the pulse source with a frequency of 1 Hz. It can be anything: on Digispark, and on the same TTL circuits, and from a board from an arrow alarm clock, and on a K176IE12 chip, and by dividing the industrial frequency by 50 with isolation by a transformer or optocoupler, and some other one. Some of these sources will require a level converter.



On a vertical board like perfboard, which gives an additional resemblance to the prototype Apple 1 (no, this time there will be no crooked name), the master has decoders that extinguish resistors and indicators. He shows this fragment of the circuit separately:



The master has everything else on three breadboards, like this:



The first time a translator sees this homemade, in which boards like perfboard and breadboard are used simultaneously:



And this is an additional confirmation that electronics and woodworking are hobbies that complement each other perfectly, and owning both is very useful. This is how the master turns the watch case:



The master glues silicone legs to the bottom, any other non-scratching table will do:



It places breadboards in the case, and perfboard sets vertically:



Using pins or bolts, she adds a sheet of plexiglass parallel to perfboard where the controls are located:



Puts in place the front wall of plexiglass, and then glues the top cover, which clamps with a clamp. Stop, but you don’t have to do this! Suddenly, something needs to be fixed. It is better to fix the top cover with self-tapping screws - then it will be removable.



And now it's time to turn on the power of the watch, and with it the blue backlight. And since it was not in time Shakespeare's Cigarette Friend Apple 1 blue LEDs, one can imagine that this is the glow of Vavilov-Cherenkov.So romantic!




The master turned out such interesting watches at the junction of technology and sculpture.
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21 a comment
I had our Brest "Byte". Also with a cassette. I even managed to carry out "bookkeeping" on it when "stood on the currency")))). The program itself was even written in BASIC.)))))
Since we were talking about the Z80, I remembered that in the Sinclair company there was a specialized microcircuit called ULA. She formed a lot of different signals (for the operation of memory chips, the formation of a video signal, etc.). ULA was unavailable for some reason, although the Z80 itself could be bought. So our craftsmen-friends replaced this microcircuit with a complex circuit on rigid logic. On chips of the K155 and K176, K561 series. Then they began to put instead of K155 K555 (almost like my nickname R555, approx. R555 xaxa ) by reducing consumption.
I could not find this coprocessor then, and besides, an industrial version of Sinclair appeared - Santaka, Byte, Baltic (?). The son preferred Byte in comparison with the 286th machine, only 386, and, EU - but, 486 convinced him of the advantage of Microsoft.
Well yes. RK-86 was also collected. True, there were almost no games on him. I recall only the "Python". And turn to play it at work xaxa
ino53
My last was the Pentagon 48
And my first RK-86! Entering from the cassette is still fun! yes
And my last 128. He, in addition to the legendary Z80 processor, had a separate music processor, forgot his name.

I then climbed well on the Sinclair. At that time he worked as a laboratory assistant at the institute. I have almost any measuring instruments at my disposal, a ROM programmer, an ultraviolet lamp-washer ...

These computers then collected everything, even dumbasses. They collected it, but they could not start it. Although the boards were double-sided with metallization of junctions, they were factory-made, the stickiness between the tracks and other defects was in bulk. To deal with this shit, little to think about, you still need to have an oscilloscope, at least. So the students brought me their collected fees, I launched them. Of course, they did not forget to bring money, parts and vodka. xaxa
...?...
My last one was the Pentagon-48, with a built-in 5.25 "floppy controller.

B ...., masturbated for 20 minutes, tried to insert a movie, neither ... I can’t, I’ll go better than crack vodka ...
It’s good that he (the author) took K155 and not K531, these in the ceramic case were so heated that they almost evaporated from the board xaxa They ate a lot, of course.
And there was also the K500 series, if I don’t confuse, ESL super-duper is fast-acting (at that time). But she ate a lot and basked.
No it's that xaxa You just showed an empty breadboard and there is a lot of free space on it. I did not immediately recognize. Here is that mikruha.

164 TM2, near K176 .... also 14 legs. And a matchbox. With tight installation, you can stuff the clock scheme. One man was selling a functioning frequency meter on the market. assembled in a matchbox, without indicators, of course. I personally saw and spit in my hands. About 15 years ago. And the decoders were 564 IDs ... This is a military series of CMOS chips.

By the way, this scarf that I showed came up with and assembled as a young man. Was built into the joystick to the homemade computer Sinclair, remember this epidemic? This is a car fire generator. Simulated the trigger with a speed inaccessible to gamers. All villains in the game were extinguished with friends instantly drinks xaxa
These are not the ones. In about 20 minutes I’ll show what I said.
Quote: R555
And there is also a series 164, economical, like K176 and miniature. True, one must be able to solder planar conclusions ....

...about...

Well, here’s the layout of the TEZ used in the Maneuver ASUV, there’s nothing superminiature ..

And there is also a series 164, economical, like K176 and miniature. True, one must be able to solder planar conclusions xaxa But all the watches can be assembled in a matchbox without reading the indicators, buttons and power supply, of course.
But I'm still worried, why is the second generator not made? It can be seen in the photo that all the counters are working, and the time is set. It seems that the aftar did a titanic work on the manufacture of these ... you can’t call for hours. And then his strength left him. He could not solder a circuit consisting of one microcircuit, quartz, 1 resistor and 2 constant and 1 tuning capacitor.
Quote: Guest Sasha
TTL is an energy-intensive series!

And there’s also TTLSh ...
Guest Sasha
TTL is an energy-intensive series! Easier compact and functional on the 176 series (IE17, IE13, 561ID3 ...)
Guest Denis
......
Why, the point? Due to design? Yes it is ... (C)
...... on IE12 or IE18, or even 145IK1901, less trouble.
About glass quartz at 100 kHz. He still needs to get it somewhere. For example, I have one, but it is not in glass, but in a plastic case sealed with sealing wax. 1965 issue. It is easier to make a second generator on K176IE5, as you suggest, using the so-called quartz clock at a frequency of 32 with kopecks. This quartz is not a problem to find.
Guest Denis
Repeat and more than one person. Another generator on IE5 to do, but it is better to get a second from glass quartz at 100 kHz.
Nothing is said about the power supply and the specific design of the second generator. Everything else is a typical scheme, but unreadable and with errors. Plus the poor performance. Even pseudo-screw does not pull.
The connection of indicators to decoders is drawn on two diagrams and on both is incorrect. When you click on the icon, the magnifying glasses themselves do not increase, but decrease.)) However, this does not matter, since no person in their right mind and solid mind will reproduce this “miracle”.
The 155IE2 line is paired with 155ID1, a fairly compact version. My first watch was, if I don’t confuse, in the 217 (?) Series, half of the trigger in the case, IN-rounds, the network frequency was divided up to 1 Hz, the consumption of 5 V was almost an ampere, everything got into the logometer case.
Sorry, here are not gas discharge indicators (fu, not comme il faut!), Some kind of matrix ...
And why on the 3rd rice. buffer element reference sheet?
How to fasten the strap a bracelet? xaxa

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