#396

Dumb questions, as someone who’s never used Ponoko or Illustrator. Assuming I want to order just the top in matte, I would need to edit the the design file so as to order one project w/matte material, and one with the rest in glossy? Is there an open source program that’s good to edit the .ai file? I tried with Inkscape, but couldn’t make heads or tails of what was going on.

#397

I suppose I can slice it up into individual parts?

Also FWIW (if you don’t want to go thru that hassle) - I hope to have laser cutter access again in about a week and will be making neotrellis cases then.

2 Likes
#398

Would you be selling any in in matte white?

#399

Not right away as I don’t have any of that material right now. DM me and we could figure something out.

#400

Works really well - very easy build - thanks @okyeron
(both cases designed by @frankchannel)

I used a Teensy 3.6 and Raspberry Pi 4. I didnt use the separate usb port as the 3.6 has the fuse in a different place to the 3.2. The only issue I had was that the grid wouldnt work when plugged into the USB2 ports on the Raspberry Pi but worked fine when used with the USB 3 port - not sure if this was a current issue (USB3 can provide more current) or if it was the particular port I used or if it just needed to be connected several times - unlikely but I’ll investigate unless anyone else has any thoughts…)

IMG_2333
IMG_2333600×509 134 KB

11 Likes
#401

Just thinking a little more about ftdi chips communicating with a teensy - would a simple ft232rl breakout board wired up to the teensy rx1/tx1 work ok to emulate a monome grid?
It looks straight forward? Am I on the right track here? If there are no objections I’ll grab a breakout board and give it a go…

eg

#402

You’ll need to be able to reprogram the chip to change the manufacturer and product strings.

(FWIW - I’m not sure I see the point unless you’re wanting to use the grid w/ ansible.)

#403

It was just a thought - to avoid needing to change device_monitor.c on norns shield (so as to keep it in-line with the official norns build) as well as to use on the avr eurorack modules. I dont mind hacking changes on my fates but on a norns shield I was keen to keep it as in-line with the base code as possible…
Also to make it future-proof with future monome releases without code changes…
If it was as simple as adding an ftdi chip, flashing it with eg FT_PROG, and changing the serial opening code part of the teensy code, then I thought it may be worth doing - the reason for me posting was I wondered if I had missed something obvious to make this a non-starter…

#404

I mean… those all aren’t exactly “simple” but yeah maybe? No idea what issues you might run into.

Personally I’m not a fan of adding hardware (and extra chip cost) when this can be addressed in software.

But hey…, do what works for you! :grin:

BTW - what color/brand filament did you use for the fates case? (I like the color)

1 Like
#405

Thanks! Filament was bog-standard Creality PLA “blue” (The grid is Sunlu PLA yellow)

I sort of agree about fixing in sw if possible, but from an aesthetic pov I just thought it would be cool if it was completely invisibly compatible with a grid and appeared as one to all monome devices…
If I could change the teensy usb driver to appear as ttyUSB* I’d definitely do that! But not sure if that is feasible (for me).

I think, next time I order some hw, I’ll grab a ftdi chip and see how it goes - the bare chip is only a few dollars…
Looking at it, I think it may be as simple as using serial1.begin(…) instead of serial and using pins 1 and 0 for uart rx/tx so I’ll give it a go… unless I am missing something (not used teensy much so it’ll be a bit of a learning curve - but happy with sw/fw and embedded stuff)

Ps this is an awesome project - thanks! I now see why grid is so cool! I didnt really understand what it was or how it worked as I’d never seen one in the flesh before! If I’d known how cool it was, I’d probably have tried to justify/buy an original! Need to finish my Arc clone as well asap!

2 Likes
#406

Put the parts order in to Digi-Key (went with the 3.2 to keep things simple), but the backorder has it shipping out sometime in August. When do y’all suggest putting an order to Ponoko to get parts arriving at around the same time?

#407

FWIW - Adafruit has the driver boards in stock, but I’m very unclear on if they are shipping regular products right now or not.

word on the street is:

they’re out of stock of a lot of stuff because no new manufacturing yet I think
but they are shipping normal things.

Also - I’ve finally got laser cutter access again and I expect to be making cases (or case parts like the EVA layer if needed) available next week.

Ponoko was estimating about 3 weeks to cut/ship some parts when I checked last week.

2 Likes
#408

As of the time that I was placing their order, Adafruit has 4 boards in stock. As of right now, they only have 1.

It’s a bummer, as their office is blocks away from mine, but it’s moot as I’ve already placed the Digi-Key order as a workaround (plus I needed some bumpons and m2.5 hardware)

1 Like
#409

digikey shows back ordered on the driver boards now. i did it, i waited too long.

#410

(10 left) UK: https://thepihut.com/products/adafruit-neotrellis-rgb-driver-pcb-for-4x4-keypad-ada3954

See also: (13 available - ships from US) https://www.arrow.com/en/products/3954/adafruit-industries

2 Likes
#411

I have built a Grid, but I need some help or advice.
I can flash the sirmware, My Mac sees is as a MIDI device, my Fates sees it both as MIDI device and under GRID…but it doesn’t seem to do anything in any app, nothing lights up…buttons do nothing…

-I have soldered all boards together, like in the supplied video (should I solder the pads on the leds side as well?)

-a blob of solder on each address pad as in the picture (https://raw.githubusercontent.com/okyeron/neotrellis-monome/master/neotrellis_addresses.jpg)

-tessny is connected DIRECTLY ON THE BOARDS as in the picture (https://github.com/okyeron/neotrellis-monome/raw/master/enclosure/breakout-wiring.jpg)

#412

Maybe you flashed as MIDI + serial?

Should be just Serial.

#413

here How to flash the firmware on a Teensy micro-controller
there’s
“a) Tools->USB Type= Serial, MIDI or Serial+MIDI”
Flashed as “Serial” only, now it’s not seen anymore by Fates

#414

please don’t ask me how but I made it :wink:
I believe I did assign 2 boards on the same Address by soldering A0
Desoldered, tested the “Multitrellis_test” and finally saw a rainbow of colors. Then uploaded the correct firmware and it’s woking now :wink:

2 Likes
#415

Has anyone tried this with a teletype? Thinking about doing a little 4*8 spinoff based on the code to use with my teletype.