#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.

#416

2 from the uk source, and 6 left fro marrow.

If anyone knows of any other potential sources, please let me know! Tempted to just grab the 6 from arrow, but would rather buy all at once from one supplier.

#417

For the moment the neotrellis grid code won’t work with Teletype (or other avr32 based modules). The USB hardware detection does not work with CDC microcontrollers. You’d need to do a workaround to use an FTDI chip as described above

2 Likes
#418

I’ve got a test build and a ftdi chip flashed - just waiting on another part before fully testing (neotrellis boards :slight_smile: ) - but from looking at the teletype code and your code for the teensy - I’m really confident it’ll work - I’m expecting to be able to fully test it later this week… will update here if it works…

2 Likes
#419

I think we chatted briefly on facebook, but this chip would also allow for the grid to not need any ode modification to work with norns, right?

#420

Yes - that’s the plan! It should work… I’ve got the ftdi chip sorted and programmed and I think the code is now sorted - but just ordered some more neotrellis boards to test, which should be here this week… dont want to mess with my working grid as I am using it play with :slight_smile:

1 Like
#421

@okyeron: thank you, i see. i’ll look into it but it might be over my head.
@forestcaver: great, i would be very interested in seeing your results!

#422

starting this build now. almost finished sanding the boards.

i realize that this seems like a basic question but could anyone explain to me how i test each board before i solder them? i have the seesaw libraries for neotrellis. i just dont know how to connect to each one so i can upload the “basic” sketch to them one at a time.

do i have to solder the pins the teensy to each board one by one or is there another way to temporarily connect them? i assume i use the teensy and the usb cable to connect to the computer. i got a jstph cable from adafruit but im not sure if im supposed to use that either. the adafruit guide appears to show that there is soldering involved. i just dont get how im supposed to do that to each one. or do i test them as i go by soldering the teensy to the first board that it’s gonna stay soldered to ,then as i attach the boards, test them that way?