You can also have decontrons do the counting:
https://www.youtube.com/watch?v=4bl5kSr8C3Q
I'm guessing some more parts can be replaced with tubes by replacing the
rectifier with a tube rectifier.
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You can also have decatrons do the counting:
https://www.youtube.com/watch?v=4bl5kSr8C3Q
I'm guessing some more parts can be replaced with tubes by replacing the
rectifier with a tube rectifier.
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i know this is an old pose but i have some 22v10's, what kind of stuff have
you made with them? using one as a bargraph driver or shift register woud
be nice for my projects since i have some neon clock displays and uusing
one to multiples it would be cool, its an old gold ceramic 22v10, but
LOVED the Mach devices! I made those things dance and sing. Complex state
machines that would make a CPU blush. Controlling steppers and sonars and
reading encoders and writing to dual port RAM
I used DATO I/Os version of ABEL and AMD's plug-ins and I was in heaven
creating those designs!
On Tuesday, June 5, 2018 at 6:14:58 AM UTC-7, GastonP wrote:
>
> Nice design, Mike
>What was the function of the microphone in the lower part of the
> shcematic? It goes to the connector and to a pin called X+ but I couldn't
> find what's after that.
> Gastón
>
There's a ring of LEDs around
On Monday, June 4, 2018 at 10:38:35 PM UTC-7, gregebert wrote:
>
> Long live PALASM ! I used CUPL a few times in the late 1980's.
>
> Were you able to program your device at home ? Most of the tools back then
> were not free, and out-of-reach for hobbyists.
> I remember sneaking into the lab
Nice design, Mike
What was the function of the microphone in the lower part of the
shcematic? It goes to the connector and to a pin called X+ but I couldn't
find what's after that.
Gastón
On Tuesday, June 5, 2018 at 2:15:41 AM UTC-3, threeneurons wrote:
>
> I've made a clock using a CPLD,
Long live PALASM ! I used CUPL a few times in the late 1980's.
Were you able to program your device at home ? Most of the tools back then
were not free, and out-of-reach for hobbyists.
I remember sneaking into the lab during lunch hour to program EPROMs.
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I've made a clock using a CPLD, the little brother of the FPGA:
https://threeneurons.files.wordpress.com/2018/06/mach210_clk.pdf
AMD MACH210. It was made quite a while ago. I guess MACH210 chips are
vintage now.
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Yeh - there are Verilog vs. VHDL wars just like Windows vs. Linus or C++
vs. almost anything!
If I were designing an ASIC, I would probably go down the Verilog route,
but as I'm sticking to FPGAs then I like the structure of VHDL, it's better
portability and tighter definition. I've no problem
My current clock designs are using Xilinx FPGAs, coded in VHDL using Vivado.
Really not a sensible thing to do, except that I've always wanted to learn
VHDL, and the only way to learn a new language (for me) is to have a decent
project or two.
I started clocks on discrete logic, moved to PICs,
Well, these dont get full-credit because I havn't built them yet, but I
have plans to do so:
1. 3D-printed gears as the timekeeping mechanism. Most likely, I would use
photosensors because mechanical switches are unreliable
2. Dynamotor for the nixie supply of a battery-powered "portable"
Oh boy I hadn't considered FPGAs - I supposed that's beyond the scope of my
current projects, just the direction I'm going in.
Added to my list!
Any others?
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The first clock I ever built (1980) used stepper relays and incandescent
edge-lit displays. Time-keeping used a 1 RPM motor with a cam. It was a
noisy piece of junk.
My first nixie clock (2011) is built entirely from 4000-series CMOS logic
gates, and runs off the AC line (no transformer).
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