#294

Just an update on debugging (with the help of okyeron) the issues i posted few days ago. I had enabled master mode in frimware (but not added pull up resistors! ) This doesn’t just stop the 16n outputting correct i2c but it also hangs. I had two 16n on test and one would run for 30 seconds or so, the other immediate crash - further confusion, guess internal teensy tolerances?)

The other point to note is that if programmed as master, it needs to be powered up after the slave has been powered.

In my setup i have er-301/JF/Ansible on a i2c bus and out to a 3.5mm stereo jack. 4k7’s soldered onto the back of the ansible. These three (and i happy together)

As there is potential (excepting port conflicts) for two masters to work on the same i populated the 16n with reasonably large 10k resistors (figuring the load in parallel with 4k7 is still reasonable)

With everything powered dow i connect the 3.5mm cable (1m in my case) power up 301 then the 16n . (sometimes the 16n needs to be cycled twice to work)

Everything works together - or separately. PolyES puts out on SC.CV1-8 and 17-24, 16n puts out sc.cv1-16

If using faders 1-8 it can cause issues but faders 9-16 are fine. If the16n could be changed to output 32-47 (like its midi channels) or think scanner_darkley mentioned alt firmware for PolyES then there would be harmony all round

Found an interesting read here, though not sure the speed the i2c is running- i have a 1m cable running reliably here alongside ansible/poly

Heres a good read on i2s resistor/ speed considerations, cable capacitance etc.
http://www.ti.com/lit/an/slva689/slva689.pdf

1 Like
#295

Quick update: 16n firmware is now at 1.33. (Hardware remains the same). This improves MIDI performance, especially when I2C MASTER is on.

There’s a “release” on Github here; alternatively, you can just compile your own version from the latest code, which I’d recommend if you’ve had success before - that’ll let you setup config.h just how you like it.

5 Likes
#296

Thanks a lot! Just compiled my own version and it works. Leader mode (16n -> TXb -> ER-301): USB MIDI and i2c simultaneously without crashing! :+1:

4 Likes
#297

Hi all,

Anyone has a mouser cart handy for share by chance? :slight_smile:

#298

FWIW - The octopart BOM links to mouser part numbers (and shows availability), so it would take about 5 minutes or less to build a cart.

There’s also a “buy now” link in the octopart BOM (at the top of the Mouser column) but it does something crazy with the quantities. You could start with that and then just adjust the quantities (and find replacements for out of stock items)

FWIW - this literally took me 2 minutes to make (although it’s missing a couple items)
https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=02a0422e7b

1 Like
#299

image
16C4E516-D95C-4A95-9395-B36BDB1F65C2.jpeg4032×3024 1.66 MB

Many thanks for sharing this project, i love it!

13 Likes
#300

Fantastic. Where did you source panels?

#301

I had them cut at Schaeffer !

2 Likes
#302

Just to add a note for everyone (maybe infovore should add something somewhere):

You MUST use a data cable for the micro USB, I’ve had two people having issues with USB connectivity and both times it was a CHARGE only cable that was causing the problem…

4 Likes
#303

I noticed this when I owned a BeatStep Pro too, yeah.

#304

Is it possible to share Schaeffer designs at all?

#305

I had this same problem with these cables from a while back but solved them by flipping the orientation of the cable connector and magnet.

#306

https://llllllll.co/t/16n-eu-uk-group-buy-thread/18657/19?u=nordseele You can try these ones. Verify in front panel designer :wink:

2 Likes
#307

Here are mine: 16nPanels.zip (911 Bytes)

Keep in mind I use M2 hardware, you’ll need to adjust everything accordingly if you want to use something bigger

2 Likes
#308

this. although, I’ll also note - sometimes, some things in the cart might not be in stock (eg caps) and you can easily replace them manually later. But yeah, the reason I use Octopart is it’s easy to click “buy now” on the Mouser parts.

#309

Not sure what needs fixing with the buy now link- it added qty 100 for each item (so 1600 faders for example)

#310

These are the fpd files i used - they are for brushed ali front, blind standoff pillars to keep the front panel clear of holes and screws. Also reduced fader channel width sligthly - still plenty of clearance.Top and bottom panel
faderbankTop.fpd (981 Bytes)
faderbankBase.fpd (858 Bytes)

L1009956
L1009956.jpg5952×3968 4.7 MB

17 Likes
#311

Wow, the blind standoffs look amazing!

#312

Ah thanks, yeah I was relying on the github site, wasn’t aware of that octopart BOM. Thanks! :slight_smile:

#313

For others searching - the Octopart BOM is there on Github - linked on the “Electronics” page
https://github.com/16n-faderbank/16n/tree/master/electronics

1 Like