Monome 40h Kits

Tone Deft · Post by **Tone Deft** » Wed Jun 20, 2007 6:24 pm

Wow, seems like you've walked that path, time to do a more advanced kit?? Are you asking about projects are just straight up soldering or do you want to learn electronics better?

I've seen some issues of Nuts and Volts, I love that stuff, cool rag. I never thought to look for their web site http://www.nutsvolts.com/

You might already know these sites
http://www.arduino.cc/
http://www.ucapps.de/
http://www.createdigitalmusic.com/

You can take those kits and make something simple or as complex as you want.

Mesmer · Post by **Mesmer** » Wed Jun 20, 2007 7:00 pm

epanorama.net is a classic,
buy you all new that, didn't you.

Tone Deft · Post by **Tone Deft** » Wed Jun 20, 2007 7:16 pm

THAT is an incredible site, where to begin??? Never saw it before.

Mesmer · Post by **Mesmer** » Wed Jun 20, 2007 8:20 pm

Same effect, everytime

After 30 minutes or so, I start hearing this in my head: "i'm feeling dizzy ... my head is spinning" in a Skeletor from Master's of the Universe kind of voice.

=}

Tone Deft · Post by **Tone Deft** » Sun Jun 24, 2007 7:44 pm

Assembly pictures are up
http://monome.org/40h/kit/assembly
you can see exactly what you'll be dealing with.

Look OK to people? Any questions?

Also,

tehn wrote:we're also a bit ahead of schedule, hoping to be ready to ship at the end of next week.

yourmom · Post by **yourmom** » Sun Jun 24, 2007 7:55 pm

looks easy enough! might take me some time as the only soldering experience i have is with a couple of circuit bending projects.. but i feel confident i could manage if i ended up buying a kit.

Surreal · Post by **Surreal** » Mon Jun 25, 2007 2:10 am

so i finally decide to commit...and i don't have enough money

i am hoping so hard they have some in 2 weeks.

TITBAG · Post by **TITBAG** » Mon Jun 25, 2007 3:08 pm

what in the god damn hell is all this crap?

Tone Deft · Post by **Tone Deft** » Mon Jun 25, 2007 5:36 pm

Surreal wrote:so i finally decide to commit...and i don't have enough money

i am hoping so hard they have some in 2 weeks.

Ouch. Don't want to discourage you but there's also the expense of making a case and buying LEDs ($.50 - $2 each * 64). But you can start off with a ghetto solution and buy those in time.

Surreal · Post by **Surreal** » Mon Jun 25, 2007 7:52 pm

yeah that is why i took my time commiting.

i just don't have 250 to spend rthis moment.

rent. i still have to take some tie learning to solder..so i am in no hurry for the case

longjohns · Post by **longjohns** » Tue Jun 26, 2007 1:25 am

anybody rec'd a shipment email?

so -

also need to buy led's?

do the buttons come with it?

Tone Deft · Post by **Tone Deft** » Tue Jun 26, 2007 4:26 am

longjohns wrote:anybody rec'd a shipment email?

so -

also need to buy led's?

do the buttons come with it?

Buttons yes - those are the KEY element to the design, the hard part to get, otherwise I'd just make my own really.

LEDs - no, we need to buy those. I'll post some links later this week of what to get, I'll look up through hole and surface mount, red, blue, yellow, green, orange, all that. No big deal, there's just 1 part of the spec sheet to check out, err maybe two (forward drop across the LED and the dispersion angle).

No e-mails yet, probably later this week. By next weekend I expect to have one together, a week later with a case.

Patch · Post by **Patch** » Tue Jun 26, 2007 7:28 am

Great work Tone Deft - you're making this easy for those of us with NO elecronics knowledge!

Does anyone know if the buttons are "bashable"? I mean, can you hit them with some force without damaging any part of the unit? I'm thinking LEDs/PCB here...

OrangeSunshine · Post by **OrangeSunshine** » Tue Jun 26, 2007 9:56 am

Looking at the logic, it doesn't appear as if diodes will actually enable discrete button pushes... it doesn't really change any of the logic. They just stop current flow in one direction up towards a switch that is open anyways.

I realize this is common practice in button matrices, however, it really doesn't change the logic any. The open switch stops the current flow anyways... Adding diodes adds nothing to enable discrete detection of multiple simultaneous button presses.

I'm pretty sure your keyboard on your computer uses the same logic... Try pressing 'a' 'z' and 'x' all at the same time... On my macbook it fails to return a single key-press if they are simultaneous. Now try doing the same with keys not on the corner... like 'j' 'k' and 'L'... All three should return fine.

Diodes would only be necessary to prevent backflow if there were components inline that would be effected by backflow of voltage...like if there were LEDs connected directly after the switch.

Tone Deft · Post by **Tone Deft** » Tue Jun 26, 2007 3:46 pm

Yeah, that's an odd one.

Diodes would only be necessary to prevent backflow if there were components inline that would be effected by backflow of voltage...like if there were LEDs connected directly after the switch.

The diodes and LEDs are on different circtuits. Diodes are with the buttons tied to the 74HC165, LEDs are tied to the matrix LED driver. It's possible to press a button without its LED lighting and it's possible to light an LED without pressing its button.

The problem doesn't have to do with LED and switch interactions, it has to do with the cictuitry scanning the button matrix and incorrectly seeing button presses. It's a voltage, not a current problem.

Watch some videos, multiple button presses are allowed. It's a weird problem.

Monome 40h Kits

Are diodes actually necessary?