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PHOBoS
Joined: Jan 14, 2010 Posts: 5591 Location: Moon Base
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Posted: Wed Jul 15, 2020 10:08 am Post subject:
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hmm, I don't see how an extra EPROM would be needed. You'd need a counter to control that EPROM, and if you have a counter
you can control the shiftregister directly with it. But maybe you have something entirely different in mind.
anyway,..
player 3 has entered the game
Also 1x12 pin female angled doesn't seem as standard as I was expecting. They do exist and apparently 1x11 pin does too
I just haven't found a seller yet that has them. 1x10 pin and some extra connectors for power would be nice because then
I could get 40 pin male parts and just divide those in 4 sections. Cost wise a 1x15 pin might be a better option though.
That also gives me some extra pins for other signals.
I also thought about double row headers but I have to design the PCBs in such a way that they can accommodate different
headers (male/female, angled/straight). Since they sit at a different distance from the edge of the board I need to make
multiple rows of holes on the edges and I think routing those will be much easier with a single row header. _________________ "My perf, it's full of holes!"
http://phobos.000space.com/
SoundCloud BandCamp MixCloud Stickney Synthyards Captain Collider Twitch YouTube |
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PHOBoS
Joined: Jan 14, 2010 Posts: 5591 Location: Moon Base
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blue hell
Site Admin
Joined: Apr 03, 2004 Posts: 24079 Location: The Netherlands, Enschede
Audio files: 278
G2 patch files: 320
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Posted: Fri Jul 17, 2020 12:06 pm Post subject:
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Hmm .. I wonder .. how ... where ... did those eight legged creatures creep in, what are they? not venomous I hope? _________________ Jan
also .. could someone please turn down the thermostat a bit.
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PHOBoS
Joined: Jan 14, 2010 Posts: 5591 Location: Moon Base
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blue hell
Site Admin
Joined: Apr 03, 2004 Posts: 24079 Location: The Netherlands, Enschede
Audio files: 278
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Posted: Fri Jul 17, 2020 12:37 pm Post subject:
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Ah, should just have followed the traces maybe as I did see the switches .. hmm .. hungry eh .. well so am I!
Pizza time _________________ Jan
also .. could someone please turn down the thermostat a bit.
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PHOBoS
Joined: Jan 14, 2010 Posts: 5591 Location: Moon Base
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blue hell
Site Admin
Joined: Apr 03, 2004 Posts: 24079 Location: The Netherlands, Enschede
Audio files: 278
G2 patch files: 320
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Posted: Tue Aug 04, 2020 12:21 pm Post subject:
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ah nice, the hexagon cube is cool (:-) _________________ Jan
also .. could someone please turn down the thermostat a bit.
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PHOBoS
Joined: Jan 14, 2010 Posts: 5591 Location: Moon Base
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blue hell
Site Admin
Joined: Apr 03, 2004 Posts: 24079 Location: The Netherlands, Enschede
Audio files: 278
G2 patch files: 320
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Posted: Tue Aug 04, 2020 1:30 pm Post subject:
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Oh, I had no idea but it seems appropriate for the thing you are making
Nice demo in that video to derive projections of the platonic solids .. the last one with the pentagons seems a bit arbitrary, although it is related to that thing with 12 surfaces .. I always forget the names ... can only count to about deca in greek
Anyways .. back to my own poly thingies .. a patch with five voices .. cross connecting the voices with my new poly shifter .. which takes the sound from one voice and tele-beams it to another one .. that is very platonic too _________________ Jan
also .. could someone please turn down the thermostat a bit.
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PHOBoS
Joined: Jan 14, 2010 Posts: 5591 Location: Moon Base
Audio files: 705
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Posted: Tue Aug 04, 2020 3:18 pm Post subject:
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polyhedron, polyphonic, it's all greek to me.
dodecahedron is the one with 12 sides. 'do' reminds me of duo or double (probably all related) so you get 2 and 10 (deca).
after that it's just trideca, tetradeca, pentadeca etc,.
now that I think about 11 and 12 seem to be somewhat different in many languages (also related of course).
well, actually I don't even know that many languages. Maybe we should switch to a duodecimal based system
(had to look that up and see there it is; duo ) useful with music and time and rotations.
oh and here's a nice 3D version of Metatron's cube.
edit: oh dear, here I go tumbling DOwn a rabbit hole again _________________ "My perf, it's full of holes!"
http://phobos.000space.com/
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Grumble
Joined: Nov 23, 2015 Posts: 1294 Location: Netherlands
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Posted: Wed Aug 05, 2020 6:09 am Post subject:
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Quote: | The green is a bit too dim for my liking |
Maybe you are partially colorblind? 🙈
Quote: The different anomalous conditions are protanomaly, which is a reduced sensitivity to red light, deuteranomaly which is a reduced sensitivity to green light and is the most common form of colour blindness and tritanomaly which is a reduced sensitivity to blue light and is extremely rare. _________________ my synth |
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PHOBoS
Joined: Jan 14, 2010 Posts: 5591 Location: Moon Base
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Grumble
Joined: Nov 23, 2015 Posts: 1294 Location: Netherlands
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Posted: Wed Aug 05, 2020 8:36 am Post subject:
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They look equal brightness to me 😂😂😂 _________________ my synth |
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blue hell
Site Admin
Joined: Apr 03, 2004 Posts: 24079 Location: The Netherlands, Enschede
Audio files: 278
G2 patch files: 320
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Posted: Wed Aug 05, 2020 8:53 am Post subject:
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Grumble wrote: | They look equal brightness to me 😂😂😂 |
Maybe you have a heightened sensitivity to red light? _________________ Jan
also .. could someone please turn down the thermostat a bit.
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Grumble
Joined: Nov 23, 2015 Posts: 1294 Location: Netherlands
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Posted: Thu Aug 06, 2020 12:41 am Post subject:
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_________________ my synth |
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PHOBoS
Joined: Jan 14, 2010 Posts: 5591 Location: Moon Base
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PHOBoS
Joined: Jan 14, 2010 Posts: 5591 Location: Moon Base
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blue hell
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Joined: Apr 03, 2004 Posts: 24079 Location: The Netherlands, Enschede
Audio files: 278
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Posted: Thu Aug 06, 2020 1:21 pm Post subject:
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Warm .. yeah .. I went into a "build but do not test" phase as well here.
Some wind would be cool too ..
And I still didn't spot that comet thing
Anyways, nice white LEDs! _________________ Jan
also .. could someone please turn down the thermostat a bit.
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PHOBoS
Joined: Jan 14, 2010 Posts: 5591 Location: Moon Base
Audio files: 705
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Posted: Sun Aug 09, 2020 5:29 pm Post subject:
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Blue Hell wrote: | Anyways, nice white LEDs! |
white, right,. (that's green with 680 ohm )
although I feel like my brain is only working at 10% capacity with these temperatures I managed to get the PCB hooked up to my breadboarded circuit.
Took me a bit of time to figure out an easy way to GND all the unused inputs(neighbors) on the PCB as they don't have pulldown resistors.
I was initially thinking of putting some connectors on the PCB and then make some other connectors I could plug onto those with the correct pins grounded,
but I didn't really want to waste any connectors and they would be rather difficult to desolder. It's also only 6 pins that need to be grounded (4 can already
be grounded with jumpers). Eventually I realized that I could just solder in some wire jumpers which are also easy to remove if I need to.
With the PCB connected to the breadboard it has 8 cells in total of which 4 are interacting between PCB and breadboard. Initially it wasn't working 100%
but I wasn't even sure if it should and was already expecting that it might need some changes. However after closer inspection I noticed something odd;
the circuit on the PCB and breadboard behaved somewhat different. I should have spotted this before but it appeared that the breadboarded circuit actually
reacted to a high to low clk transition aswell which the PCB didn't (and it shouldn't). I had another look at the schematic and the datasheet of the flipflops but
nope, it should not do that. Eventually I figured out that the problem was with the EPROM testboard (the perf one) which has an LED connected to the CLK
input through a 470 ohm resistor. As soon as I removed the LEDs (they're in a socket) it didn't trigger on the high to low transition anymore.
So now it appears to be working, at least from what I tested so far but I can't really test that much with only 8 cells. I could solder up some more PCBs
and maybe I will but for the cube I won't use these boards and then I'd probably have to desolder some parts. I think I will first link the outer cells of the
breadboard to the PCB so that it wraps around in one direction and see how well that works. So far it actually looks promising _________________ "My perf, it's full of holes!"
http://phobos.000space.com/
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blue hell
Site Admin
Joined: Apr 03, 2004 Posts: 24079 Location: The Netherlands, Enschede
Audio files: 278
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Posted: Mon Aug 10, 2020 6:08 am Post subject:
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Promising!
Here is a nice cover of that song that always creeps into my head with weather like we have it now : https://www.youtube.com/watch?v=fIQkq2qJj9I _________________ Jan
also .. could someone please turn down the thermostat a bit.
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Grumble
Joined: Nov 23, 2015 Posts: 1294 Location: Netherlands
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PHOBoS
Joined: Jan 14, 2010 Posts: 5591 Location: Moon Base
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Posted: Fri Aug 14, 2020 3:43 am Post subject:
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this week basically went like this but with much more sun
Initially I just couldn't get it to work and I wasn't sure if there was anything I could do about it but yesterday I realized
that I do have a resistor on the PCB that's not on the breadboard as it's not actually needed*. But apparently it affects the
timing a bit and the circuit is rather timing critical (also a reason why I am still not expecting it will fully work). Now I have
8 cells connected as a 2x4 matrix on a cylinder and after numerous tests it all seems to work as it should.
I'll solder up another board, probably later today, and test if it will still function with 12 cells.
*connected to the base of a transistor configured as an emitter follower _________________ "My perf, it's full of holes!"
http://phobos.000space.com/
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PHOBoS
Joined: Jan 14, 2010 Posts: 5591 Location: Moon Base
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blue hell
Site Admin
Joined: Apr 03, 2004 Posts: 24079 Location: The Netherlands, Enschede
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Posted: Sat Aug 15, 2020 12:48 pm Post subject:
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It blinks
No idea if it are the good blinks yet tho ... but it looked a bit like a .. hmm .. isnt that thing called a blinker?
Seems so _________________ Jan
also .. could someone please turn down the thermostat a bit.
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PHOBoS
Joined: Jan 14, 2010 Posts: 5591 Location: Moon Base
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Posted: Sat Aug 15, 2020 1:43 pm Post subject:
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if you remove the left column, bottom row and 4 squares in the top right corner you get what you see in the video.
the middle cell is yellow/orange because it has 2 live neighbors and is alive.
the outer cells are green because they have 3 live neighbors. _________________ "My perf, it's full of holes!"
http://phobos.000space.com/
SoundCloud BandCamp MixCloud Stickney Synthyards Captain Collider Twitch YouTube Last edited by PHOBoS on Sat Aug 15, 2020 3:45 pm; edited 1 time in total |
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