16n is a bank of faders [release thread]

okyeron · 2019-01-23T06:28:03.160Z

FYI - @Nordseele posted a new thread for 16n hacking and hardware build questions, etc. here:

16n Faderbank: build help, dev suggestions Tech

Building the 16n faderbank. Suggest mods and hacks, etc: ask for help and advice here

x2mirko · 2019-01-23T20:22:20.295Z

I’m having trouble getting my 16n to talk to my ER-301 in master mode. I had teletype integration working without issues, so I think I got the basic connection right. Just trying to confirm that I’m not missing something stupid:

I’ve downloaded the current firmware from github (post “i2c doesn’t work” update), added in the #define MASTER 1 line in config.h and then flashed it to 16n. Then I connected it to the ER-301, powered on my modular, confirmed that the i2c slave address on the ER-301 was set to 0x31 (and was running the most current firmware 0.4.11) and then added a SC.CV unit to a chain with port set to 1. My assumption was that this was how the data was transmitted and that if I moved the first fader, I should see a corresponding change in value.

Is there something I missed? I’ll triple check all connections again, I guess

Nordseele · 2019-01-23T21:01:22.927Z

@x2mirko Have you soldered the 4,7k pull-up resistors on the 16n ? They’re needed in master mode

x2mirko · 2019-01-23T21:09:30.292Z

I knew I forgot something!

Nordseele · 2019-01-23T21:12:34.720Z

It should work once they’re soldered on, but you should avoid connecting this “Master” faderbank directly to the TT or to the same bus.

bpcmusic · 2019-01-27T01:23:12.365Z

Quick note: the TXb busboards with the stereo i2c jacks will be hitting my web store on Monday at 2 PM PST. Full details are here:

Telex: Teletype expanders Monome

TELEX For Sale - Advance Notice Store Opening on Monday January 28th at 2 PM PST [ 5 PM EST / 7 AM (Tuesday the 29th) TST (Tokyo) / 10 PM GMT (London) ] Store URL: http://store.bpcmusic.com/ The following inventory will be added when the sale opens: TELEXo (TXo) Teletype Output Expander TELEXo Plus (TXo+) Teletype Output Expander TELEXo Plus (TXo+) Upgrade (TXo Required) TELEXi (TXi) Teletype Input Expander TELEXb (TXb) Powered i2c Bus Board TELEXn (TXn) 7 Channel Fixed Panner Quantities …

okyeron · 2019-01-27T22:10:26.796Z

Test build success!

(gotta get some white/gray “nub” switchcaps)

IMG_1596.jpg1080×720 231 KB

BTW these are switch caps from Tadya
https://www.taydaelectronics.com/toggle-switch-handle-cap-red.html
https://www.taydaelectronics.com/toggle-switch-handle-cap-black.html
https://www.taydaelectronics.com/toggle-switch-handle-cap-white.html

okyeron · 2019-01-28T05:56:11.871Z

Late to the address party - but ran into all the address problems tonight

There’s a list of i2c addresses in the monome ecosystem here:

github.com

monome/libavr32/blob/master/src/ii.h

// ADDRESSES
// each device must use a unique address (0x01-0x7F)
// 0 is RESERVED for global commands

#define WW                  0x10
#define WW_KRIA             0x10 // ww kria uses ww address

#define II_ANSIBLE_ADDR     0x20
#define II_ANSIBLE_ADDR_2   0x21
#define II_ANSIBLE_ADDR_3   0x22
#define II_ANSIBLE_ADDR_4   0x23
#define II_MID_ADDR         0x24
#define II_ARP_ADDR         0x26
#define II_KR_ADDR          0x28
#define II_MP_ADDR          0x2A
#define II_LV_ADDR          0x2C
#define II_CY_ADDR          0x2E

#define MP                  0x30
#define ER301_1             0x31

This file has been truncated. show original

0x35 is no good because it’s already assigned (TETRAPAD). So additional devices would need to use the 0x40 or 0x50 range perhaps?

I’ve just put my flag down for 0x55 to use for enigma.

I’m going to send up a issue on github to put the 16n i2c address in config.h

michael · 2019-01-28T07:21:38.970Z

Uploaded the latest firmware. Testing midi on chrome shows all 16 channels being controlled by fader 1. No other faders register. Not being seen by the teletype either. This build is pre-multiplexer. What flag do I need to change?

okyeron · 2019-01-28T08:26:41.129Z

i think…

config.h
uncomment this:
// #define V125

infovore · 2019-01-28T10:50:53.042Z

yes, what @okyeron said. If you uncomment the line mentioned in config.h so that V125 is defined, and flash that, your board should work correctly. (I’ve tested the latest build on my own 1.25 hardware and it worked correctly).

infovore · 2019-01-28T10:53:06.205Z

I’m wary of making the i2c address changeable, mainly because one of the key uses - Teletype - requires it using a fixed address that is baked into the TT firmware.

We could move it into config.h, make the default 0x34, and then leave a sternly-worded comment about only changing this if you know what you’re doing.

okyeron · 2019-01-28T17:10:47.881Z

infovore:

and then leave a sternly-worded comment about only changing this if you know what you’re doing.

Agree completely.

FWIW - I’m looking at this from a development perspective - hacking firmware code on other devices that will talk to 16n.

CryptocrustB · 2019-01-28T22:06:38.466Z

Holy smokes. I got the Txb, but it seemed like the reverse cables sold out immediately. Pretty nutty!

okyeron · 2019-01-28T22:07:23.841Z

I can probably help with cables. PM me.

leterell · 2019-01-29T05:19:13.239Z

Well damn, that was fast. Thought I’d signed up for that notification, guess not.

But since I’ll only be controlling the ER301 with the 16n, i guess an active hub isnt necessary and basically i could just wire a header to a TRS cable and get the functionality?

Nordseele · 2019-01-29T21:13:29.314Z

leterell:

i could just wire a header to a TRS cable and get the functionality?

Yes, exactly. I built something similar with a stereo jack on a 2hp panel. Don’t forget the pull-up resistors on the 16n

Perhaps BPCmusic will also release the files at some point and you can build your own, idk… anyway you don’t need an active hub if you connect the 16n directly to the 301

freqout · 2019-01-29T21:15:51.706Z

Nordseele:

Perhaps BPCmusic will also release the files at some point and you can build your own

from the TXb product page:

The TXb is an Open Source module. Build one yourself; all details will be on the TXb GitHub Project Site once we’re shipping.

mopoco · 2019-01-30T07:38:30.283Z

Nordseele:

@x2mirko Have you soldered the 4,7k pull-up resistors on the 16n ? They’re needed in master mode

Please, could you elaborate where we should put those? I‘ll be in the same situation as @leterell soon.

ermina · 2019-01-30T08:09:23.780Z

R17 and R18 to the right of the teensy (as per https://github.com/16n-faderbank/16n/tree/master/build).