findbuddha
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Posts posted by findbuddha
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Here's what Wilba mentioned about LEDs in the BLM forum (this was for shining through the sparkfun button pads):
While I haven't proved this yet, I think you would need some ultrabright waterclear bicolor 3mm LEDs, like found on eBay... and not the weak diffused kind like you find at Mouser (and what I used on my MB-SEQ). SMD LEDs might work but it's too hard to find them with good brightness and low cost, plus they might not illuminate the cap as well as a 3mm LED which is more in the middle of the hole. 3mm LEDs are cheap and available from many suppliers so that's good. -
I've mailed the seller to see if they ship to Aus.....
Hawkeye, did you have any particular SMD LEDs in mind? Do you intend to attach LED to button actuator, or locate next to button? The 3mm through hole LEDs I had intended to use are too tall to mount next to these buttons.
:)
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How nice are the buttons? Are they totally silent?
Wonder if the seller ships outside of EU.....
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Thanks,
I was tossing up between Ableton Live with a tightly integrated midi interface (must have step sequencer) or using Reaper + MBSeq. I looked briefly into Live's API and Max4Live situation, and decided to stay well away - especially given Ableton's poor delivery of promised hardware integration features with M4L.
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wow TK, you are unstoppable :)
Well I for one am very interested in the OSC as I'm a Kyma user. Just have to finish that darn Ethernet board and I will start bugging you with support requests :D
I might be interested in OSC too, apparently Reaper is going to get OSC support in the nearish future.
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Careful, there's a time limit for filing a complaint.
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Are you able to access data inside clips? Ie. use control surface as hardware step sequencer?
:)
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There are some spam links in the wiki - 2 I could see on front page, not sure about elsewhere
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hmm... the forum is not an issue as everything you need to know is here
Fair go, it can be a difficult decision to make when you have to choose between:
a - reading the forum for hours to find the info or even just the search term
b - posting what may be a stupid question in the hope that someone more knowledgeable can take 1 minute to tell you the answer.
:unsure:
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I appreciate your help :)
I think I'm getting closer:
- 12mil spacing
- 16mil traces except for a couple of 14mil that go between some pads.
- ground plane seems a little better utilised.
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My PCBs will be using 6mm switches, probably either E-Switch TL1105BF100Q or Panasonic Light Touch Switch EVQ-PAC09K.
For my planned DIY illuminated setup, the switch actuators will need to be the correct height. I'll be getting a small PCB and ponoko panel/buttons done up to test the concept.
Here's my current ponderings (stuff on the right hand side is for a mixer/LC):
Any suggestions?
:)
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Where does one find such cute little brackets?
/stupid question
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Here it is, redone with 16mil traces, 10mil clearance. Passes kicad DRC. These are direct screenshots from kicad, instead of the poorly layered render I did last time.
I've attached one with GND plane, one without.
Am I getting closer? (Still a few components need moving a little, mostly caps)
Thanks :)
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Which DRC did *that* pass? Your tracks are way too thin, way too close to pins and other tracks and have way too many 90° bends.
- Try routing with 16 mil traces
- Look at the spacing between the ground plane and the pins - there's a reason for that
- Delete that layout. Start over - best way to learn.
- Oh and, make a new thread for PCB design questions.
It passed Kicad's DRC.....
Tracks too thin? Ok, I will try 16 mil traces....
Too close to pins? Do you mean for manufacturing, or electrical interference? I have used 10mil minimum clearance: the two manufacturers I might use specify 8mil (PCBCart ) and 7mil (Gold Phoenix).
Delete that layout? :shocked: Can you please suggest a better layout? I've already spent many hours deleting and starting over :sorcerer:
I just looked at TK's protoboard layout http://midibox.org/forums/index.php?app=gallery&module=images§ion=viewimage&img=277
Seems to have IC1 a long way from IC2 - I didn't realise such long SC/RC lines would be acceptable???
Thanks for your help :)
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nILS, you need to talk down to us Aussies... maybe use the local vernacular... like...
Autorouters are about as useful as tits on a bull. They put tracks all over the place like a mad woman's shit. Even blind Freddy could do a better job. I'm not pissing in your pocket mate!
Tits on a bull????? :frantics:
OK, thanks for all the auto-router info.
I've gone and layed out the components more intelligently :thumbsup: , and routed it manually (still using Freerouting.net).
Any more tips?
Ta :)
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oh....
Could you briefly tell me why? freerouting.net seems (to my eye) to do a nice job of connecting everything, then optimizing it.
What should I be doing to route this design that an autorouter can't?
Thanks!
*edit*
I re-did it with GND and +5V planes, and it looks a bit neater.....
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More noob PCB meanderings:
I've gone back to separate Scalar PCB.....
I manually routed the 'long' connection between J1 -> shift registors -> J2, then let the autorouter do the rest.
Any suggestions?
:)
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I did alter the dimensions of the LCD cut-out and the matching clear panel, in line with Wilba's suggestion.
I'd be cautious rack mounting using the acrylic - I don't know how strong it is?
I'd also suggest anyone using/modifying the files I've posted in this thread to check things over, as I've sold my Seq CS PCB (to make my own, more suited to me), and won't be using this design as posted. :)
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Core32 <-MIDI-> Core8 <-J8/J9-> BLM
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Well, here's a first pass at it. Need to give more space for the extra row so it can be broken off, and add all the mounting holes.
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Hi all,
I am looking for KICAD library files for the ALPS STEC16 and Bourns PEC11 rotary encoders usually used in MIDIbox projects. Has anyone ever used KICAD to build a board that had these encoders?
Thanks, ilmenator
Here's my libraries. The PEC11 stuff is converted from the eagle library found in the midibox wiki. I haven't built a board with them, so I can't verify that they're good.
:)
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Also, is it safe to leave unconnected the unused pins on the shift registers for the extra row/column BLM_Scalar?
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My initial attempts at integrating a Scalar module with a BLM layout seem to suggest it’s possible, but I know little about the electronics involved so I must ask:
Is it ok to distribute the transistors around the board…. Ie. have them far away from the shift registors?
What about the resistors?
I know I must maintain the path of the signal chain between J1/J2 as mentioned in TK’s BLM_Scalar schematic.
Ta :)
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Maybe it's possible to setup one PCB (4x16 + extra row attached), get four made, and chop off the extra row... perhaps with a V-score between the 4x16 and the extra row. You end up paying for three extra rows you don't need, but that might be cheaper than the extra setup fee.
That's what I meant, didn't explain myself clearly enough. I've been looking at PCB Cart:
14"x4", 2 designs per panel (4x16, extra row), to match Seq panel layout
Tooling: $ 80.80
Unit cost:
$ 17.68 (4)
$ 8.44 (20)
14"x4", 5 designs per panel (4x16 and extra row, both split with 'spacer' board in middle), to allow matching Seq panel layout or square layout
Tooling: $ 110.18
Unit cost:
$ 17.68 (4)
$ 8.44 (20)
cheap ALPS encoder & silent ALPS buttons
in Parts Questions
Posted
Seller says they won't ship outside EU.... would any of you kind Germans consider purchasing on behalf of other midiboxers?
Ta :)