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blue hell
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Joined: Apr 03, 2004 Posts: 24079 Location: The Netherlands, Enschede
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Posted: Sat Aug 15, 2020 2:13 pm Post subject:
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Ah - had not noticed that 'part of the pattern' LED on the breadboard yet - although you did point it out I now see.
Time for then, and
_________________ 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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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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Posted: Wed Oct 14, 2020 1:06 pm Post subject:
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I made some jigs to keep the connectors in place while soldering
jig1 is for the 4 1x3 male pin headers on top of the PCBs
jig2 is for the connectors between the PCBs of one side of the cube
jig3 is for the connectors between the sides (haven't used that one yet)
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_________________ "My perf, it's full of holes!"
http://phobos.000space.com/
SoundCloud BandCamp MixCloud Stickney Synthyards Captain Collider Twitch YouTube |
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AlanP
Joined: Mar 11, 2014 Posts: 746 Location: New Zealand
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Posted: Wed Oct 14, 2020 3:46 pm Post subject:
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You madman... |
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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: Sun Oct 18, 2020 9:32 am Post subject:
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Futuristic _________________ 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: Wed Oct 21, 2020 2:37 pm Post subject:
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I have been testing the PCBs and it is still looking good.
I did have some unsoldered IC pins and a solder pad that was shorting (removed it with an x-acto knife).
Also some bad contact with a couple of EPROMs but I was already afraid that might happen as they feel
a bit loose in the sockets I used. Can get a bit more friction by bending the pins outwards.
Anyway, I managed to fix what didn't work and at the moment every side of 4 PCBs seems to be functioning properly.
Don't know yet what happens when I start connecting sides together which will be a bit trickier to test.
if you're really bored you can still check out the PCB testing stream on twitch: https://www.twitch.tv/videos/775569105 _________________ "My perf, it's full of holes!"
http://phobos.000space.com/
SoundCloud BandCamp MixCloud Stickney Synthyards Captain Collider Twitch YouTube |
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dk
Joined: Feb 12, 2019 Posts: 115 Location: Europe
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Posted: Thu Oct 22, 2020 8:08 am Post subject:
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Way beyond me, but I'm enjoying watching this come together
A bit OT, but what's that thing with all the lights making patterns in your 2 Oscillators, 1 Clouds video? One of your creations as well? _________________ Horrors Of Dial-Up! on Facebook
Horrors Of Dial-Up! on Instagram |
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PHOBoS
Joined: Jan 14, 2010 Posts: 5591 Location: Moon Base
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Posted: Thu Oct 22, 2020 12:52 pm Post subject:
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The thing creating the patterns is a Novation Launchpad MK2. I didn't want to use it with ableton or other software on my PC
so I hooked it up to an arduino to control it. The launchpad itself sends out a midi signal when you press/release a button
and all the LEDs are also controlled with midi so it wasn't that hard to do with an arduino. I mainly use it as a trigger sequencer
for drums (trigger signals are send out by the arduino) but I did add a midi output aswell.
The patterns you see are created by mapping the 8 trigger outputs to a location on the button grid.
Code: | // ---------------------------------
// | 8 | 7 | 6 | 4 | 4 | 6 | 7 | 8 |
// ---------------------------------
// | 7 | 1 | 5 | 3 | 3 | 5 | 1 | 7 |
// ---------------------------------
// | 6 | 5 | 8 | 2 | 2 | 8 | 5 | 6 |
// ---------------------------------
// | 4 | 3 | 2 | 1 | 1 | 2 | 3 | 4 |
// ---------------------------------
// | 4 | 3 | 2 | 1 | 1 | 2 | 3 | 4 |
// ---------------------------------
// | 6 | 5 | 8 | 2 | 2 | 8 | 5 | 6 |
// ---------------------------------
// | 7 | 1 | 5 | 3 | 3 | 5 | 1 | 7 |
// ---------------------------------
// | 8 | 7 | 6 | 4 | 4 | 6 | 7 | 8 |
// --------------------------------- |
and depending on the current step they will light up in a specific color. In the 2 Oscillators 1 Clouds video I was using an oscillator
output as the CLK source so there was some relation between the sounds and visuals.
Here's a better view: https://www.youtube.com/watch?v=x7hwfPhInNE
btw I do want to try Conway's Game of Life on the launchpad aswell but I don't think there is enough memory left to add it to my current code. _________________ "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
Audio files: 705
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Posted: Sun Oct 25, 2020 7:39 am Post subject:
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Yesterday I tested connecting the sides together. I went through them in pairs, so connecting 2 sides together, test it,
rotate each side 90 degrees and test again, which means that after 3 rotations all side connections have been tested.
I did that for 3 pairs of sides to get them all tested. Found a couple more unsoldered pins , had to replace
a connector and reseat some EPROMS but got them all to work. I am not really happy about the bad connections
with the EPROMs but I only see 2 options for that:
1. solder the EPROMs to the sockets. Apart from it probably being tricky to do that also doesn't seem very practical.
2. replace all the sockets with better ones. I used IC socket strips right now but some low-cost sockets would work better.
The reason that I didn't use those is that it is hard to remove large ICs from them and that can put some strain on the PCBs.
Aslo getting them out straight without a proper extraction tool can be difficult resulting in bend pins. Replacing would mean
desoldering 672 pins from double sided PCBs which I am not going to try without a proper desoldering tool.
Anyway after testing all the sides I put the whole cube together and,... I think it is actually working
On powerup it seems to start pretty random so that is a way to create start conditions but turning it on/off all the time
might not be the best idea. I haven't found a pattern yet that keeps going apart from the standard blinker but some take
quite a couple of iterations to finish and it looks great!
I'm not done yet though. It needs a clock oscillator (might aswell add an external input too), a powersupply and some sort of stand.
Oh and buffered CV output. I am not sure what the current consumption is but I estimate around 500mA max. The poor 5V regulator
on my test supply can't keep up and gets sizzling hot while the voltage drops down to about 3.5V. I think a standard USB supply/charger
would be ideal for this. I also thought about putting a powerbank (and clk osc) inside the cube to make it wireless.
Now that I have all the EPROMS in let me put it on the scale, one moment,..
1450 grams _________________ "My perf, it's full of holes!"
http://phobos.000space.com/
SoundCloud BandCamp MixCloud Stickney Synthyards Captain Collider Twitch YouTube |
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dk
Joined: Feb 12, 2019 Posts: 115 Location: Europe
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Posted: Mon Oct 26, 2020 4:49 am Post subject:
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Weighs as much as a newborn, and it was probably a similar amount of work to get to term
I look forward to seeing the whole thing in action! (and thanks re:Novation Launchpad) _________________ Horrors Of Dial-Up! on Facebook
Horrors Of Dial-Up! on Instagram |
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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
Site Admin
Joined: Apr 03, 2004 Posts: 24079 Location: The Netherlands, Enschede
Audio files: 278
G2 patch files: 320
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Posted: Mon Oct 26, 2020 1:52 pm Post subject:
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That thing looks great! As if it was supposed to be in space at some time _________________ Jan
also .. could someone please turn down the thermostat a bit.
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RingMad
Joined: Jan 15, 2011 Posts: 427 Location: Montreal, Canada
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Posted: Tue Oct 27, 2020 2:20 am Post subject:
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Very impressive satellite build... when will it be launched into space? . _________________ .: james :. |
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PHOBoS
Joined: Jan 14, 2010 Posts: 5591 Location: Moon Base
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Posted: Tue Oct 27, 2020 11:45 am Post subject:
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thanks guys
it did remind me of a Borg cube.
Last night I made a cardboard mockup for a stand idea to see if that could work. The angle was a bit trickier to calculate
than I expected but I think I got it correct.
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_________________ "My perf, it's full of holes!"
http://phobos.000space.com/
SoundCloud BandCamp MixCloud Stickney Synthyards Captain Collider Twitch YouTube |
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Grumble
Joined: Nov 23, 2015 Posts: 1294 Location: Netherlands
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Posted: Tue Oct 27, 2020 3:16 pm Post subject:
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Thats just AWESOME! _________________ my synth |
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AlanP
Joined: Mar 11, 2014 Posts: 746 Location: New Zealand
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Posted: Tue Oct 27, 2020 10:55 pm Post subject:
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It's like a Borg version of the puzzle cube from Hellraiser!
Does playing music from it make Pinhead appear? |
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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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Posted: Fri Jan 29, 2021 3:33 pm Post subject:
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After desoldering all the socket strips and soldering in the new sockets I placed the EPROMS back in and tested all the connections
measuring directly on the EPROM pins. There aren't any faulty connections anymore so that was definitely an improvement. I put the
cube back together, powered it up, set a very simple pattern that I know loops aaaand,... it didn't work as it should
I set the cube aside for a couple of days as I just didn't have the energy to look into it, while contemplating what might be the problem
this time and evaluating my life choices.
Well today I felt like I should try to figure it out so I set the pattern and checked at which step a certain output didn't behave. I then reset
the pattern and manually clocked it untill the step just before it went wrong and measured all the logic levels that would be responsible for
setting the output. The EPROM behaved as it should and the input on the flipflop was ok but it didn't flip or flop. Hmm, which one is the flip
and which one the flop ? I guess in this case it flopped because it didn't flip.
Anyway, while measuring the logic levels I noticed something that I thought I had mentioned here before but maybe that was in the chat;
the voltages were a bit low. I am using a different supply which can supply plenty of power, so not the one I initially tested with which dropped
down to about 3.5V with a toasty regulator. So the problem isn't the supply but the crappy alligator leads I am using which btw are fine for low
current use. I doubled them up and that increased the voltage a bit and the cube behaved better but still not correct. That's when I remembered
something from an earlier test. The control circuit, which is just an oscillator and a debounced switch for manual stepping, should not be connected
to the supply directly but get its power from the cube, at least untill I use proper wires. After doing that it finally behaved again so now I have it
flashing away to see if it will keep running without any errors. I will have to test the pattern in different directions but I am not expecting any
problems with that,... we'll see. Once I know it works 100% I can start trying to figure out some other patterns. I have a hunch there are some
interesting patterns that will loop around the whole cube but it might be hard to discover them.
I also thought about using different rule sets, which I can do by reprogramming the EPROMS. But I think it would be far more practical to either
do that entirely in software first, though I am not sure how to visualize that, or make a mini arduino controlled cube for testing. _________________ "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 Fri Jan 29, 2021 4:35 pm; edited 1 time in total |
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blue hell
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Joined: Apr 03, 2004 Posts: 24079 Location: The Netherlands, Enschede
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Posted: Fri Jan 29, 2021 4:07 pm Post subject:
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Hmm .. a software emulation of the cube? _________________ 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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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: Sat Jan 30, 2021 11:16 am Post subject:
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I've made a model for it ..that is just the calculation engine ... nothing fancy, it can output text strings.
How again did you handle the case for the corner LEDs (having one neighbour less)?
What is the ruleset you are currently using? .. as in with what neighbour count life->death, etc.
And then .. the rule you used for the LED color .. I see off, green, yellow and orange? I currently just have dead and alive ... so presumably there will be some state involved ... like .. just became alive .. just died? Will have to change the model for that ... _________________ Jan
also .. could someone please turn down the thermostat a bit.
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