latigid on

BLM 16x16+X build guide

160 posts in this topic

53 minutes ago, Claire said:

Just a question really: why through hole diodes?

When building monome kits (the new ones, the slim, grid kid 128) I found the migration from through-hole diodes to SMT to be really very helpful on repetitive tasks (tin pad, heat pad, slide diode into pad, solder other pad: repeat). OK you trade the fiddlyness of small easy to incorrectly invert diodes but there is no bending cutting and board flipping and because of the low profile of SMT parts diodes can go on the silicone side easily enough if needed.

The idea from the start was to minimise the SMT and use commonly available parts where possible. The LEDs were different as they sit in a routed channel, but that was part of the choice for resistor networks in chip packages rather than discrete. Something like this would be a great investment:

THT are a cent each in quantity, more for SMT. MELF = mostly ends up lying on the floor, so you'd likely go for one of the SOD packages.

Looking at the design again, I think SMT would work on the rear side most of the time (disagree about the front side, you want that as flat as possible), but there are parts of the board where diodes bridge a layer. It's a complicated PCB and keeping one footprint simplifies the process. I don't think I'm prepared to redo the whole thing again because it's a lot of work and the risk would be on me not to propagate errors.

 

53 minutes ago, Claire said:


@latigid on are you going to make this board available again? I have my work cut out with a project at the moment but I'd be interested in getting back into grids at some point but monome is going in a direction that is a bit eurorack-centric for me and the max-msp/serialosc/computer side of things seems to be slipping a bit.

I can't do a big order like this without paying taxes. Especially as a foreigner in DE it's not straightforward to wade through all of the bureaucracy and set up a business. I know you've just signed up, but it seems over the last year or so a lot of "puff" has gone out of the forum. It's less desirable to go through all of that without an active community presence (I realise the chicken-egg analogy of supply and demand being mutually dependent).

I need to stick my finger in the wind so to speak and also check on my situation here. What I'd most like to see is a return to the motto of "Community Designed MIDI Devices" printed as part of the forum logo. 

 

53 minutes ago, Claire said:

It would be nice to see this branch out to other applications other than the SEQ, has it been used anywhere else that you know?

@Phatline makes good use of it in his Triggermatrix.

 

Best regards,
Andy

 

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Ok all good reasons. If a new build happens I'll hopefully be on it. I do think you are being a teensy hard towards SMD diodes (but yeah I had a tray of SMD LEDs go that way...ugh). They are just as common as through-hole and just as cheap from experience, but I'm weird and find SMD 1205 and 0805 to be easier than through hole... and so many parts are now in TSSOP over PDIP -- I'm probably in a minority like that...

When I get an Eagle file I usually look for ways to convert through hole parts into SMD, it helps make things very slim profile for Skiffs and so on and I can get bigger boards into Eagle's Freemium size (I really really must get a proper licence some day).

If you ever have a waiting list for boards I'll be get on it.

Thanks for the detailed response

Edited by Claire

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I too would like a PCB for this wonderful project, I hope it happens and I certainly appreciate all the work TK, Andy and others have done and are continuing to do for the Midibox system.

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Hello, TK, Andy and Others
I see that this magnificent project does not move any more. As many of us are waiting for the PCB and the case, how can we help to move the project forward

Pierre
 

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Don't worry, it should happen again someday... 

Best,
Andy

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Is it just PCB supply holding things up? Could the files be offered to Modular Addict like the MB-6582 and MBSEQ?

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cut that man some slack, if he says, there will be a new edition, then there will be one! :-)
(i can only imagine how much work running a bulk with a project that size really is - and there might always be other priorities like girls, football, work and babies in life! :-))

Many greets,
Peter

 

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Hehe Peter, don't spread rumours! :P

Best
Andy

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Sorry, not trying to get on anyone's back. Quite the opposite, thought maybe it would help to offload some of the work of doing a bulk order (which is a rough job).

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