#91

What has changed since it worked well?

#92

That’s just it, nothing really… I have had some issues with the faderbank before though…replaced the i2c cable and it worked fine after that… But today this TT freeze came up while polling a TI.PARAM, never had that before and 16n was not connected so the glitch came from elsewhere

#93

So it sounds like without 16n, everything works fine? Is 16n on the leader or follower firmware? How about ansible? Did you load the latest firmware? Is it by chance in leader mode?

Personally I have everything on one bus, some connected to Teletype backpack, others daisy chained. Same devices as you minus the mannequins devices.

#94

16n is a follower, no pull ups were soldered. Ansible is up to date and is also a follower, I can call Arc (Levels / Cycles etc…) on the TT… I also thought that 16n must be the issue but then I had some trouble with TXi… I’m afraid I have to start with one connection and work my way up to find the issue…will also try daisy chaining. The stereo jack chassis might be glitchy for 16n, then again, it’s just three wires right? Have you ever experienced a TT freeze due to i2c issues Joe?

#95

Not as of yet. Even with multiple leaders Teletype has never frozen on me.

#96

I think I’ve found the problem, I changed power adapters and usb cable for the 16n and things seem stable… What’s puzzling me is that I checked midi through usb on my laptop and midi monitor read the faderbank correctly… This cable/ adapter however seems to disturb the i2c lines in the modular system?

1 Like
#97

Perhaps the usb connector on that cable was not getting a solid enough connection? Or was intermittent in some way that caused the i2c bus some issues.

#1 Teensy (and thus 16n) troubleshooting tip: Try a different USB cable.

3 Likes
#98

Something like that it seems, confusing as a laptop or the test browser read 16n fine… my 16n now has a Dr Dre Beats cable and adapter :sunglasses:

2 Likes
#99

Request for further discussion of pull-up resistors, pulled high and pulling the lines low.

Thanks!

This document is already really helpful, the edit request is not a criticism but simply a suggestion for possible improvement.

#100

added a quick description and a link to more info :+1:

3 Likes
#101

Thanks!

One more request, now that Crow is out. Can you incorporate it into the list of leaders/followers?

I’m about to order one but would like to be sure if it’s a leader or not… It looks like the standard leader would be TT, but I probably won’t get one for a while…

Thanks!

1 Like
#102

Anyone here have any familiarity with updating an older Meadowphysics to attach the i2c headers? I’m not getting a ton of hits on search and I don’t think that it warrants a new topic. Thanks in advance!

Teletype I2C protocol
#103

Does this page do the trick?

1 Like
#104

YES. I knew I’d seen this once upon a time! Thank you so much!

#105

this topic is a better place for i2c related questions: A user's guide to i2c

1 Like
#106

Oh that thread taught me everything I know! I just knew I’d seen a detailed breakdown of updating those old trilogy modules.

Excited for your VCV module! Godspeed.

1 Like
#108

I hope this is an appropriate location for this question…

Is there anywhere I can find photos or clear graphics indicating exactly which pins have which functions on all the monome and Mannequins modules?

I looked at JF, Ansible, W/ and Crow the other day when I was moving things around to fit Crow in where I wanted it to live… To be honest, it wasn’t super clear what the functions of the pins were… I may not be looking in the right place, of course…

It would be awesome if this information could be collected in one place, hopefully the new Lines index…

Thanks!

#109

Are you asking about which pins are GND/SCL/SDA? They are typically printed directly on the PCB on the back of the module next to the appropriate pins.

As far as what they do, check up at the top post?

#110

I’m saying that I could not reliably find the printing on the modules, I understand what the functions are. I appreciate the link to that description too!

#111

Quick clarification!

I have 8 i2c modules (not counting txb) working fine on my i2c bus currently with a White Whale coming next week and plans to solder the ii headers to my older Meadowphysics.

There’s mention on a few modules in the list of “up to x devices”… does this refer to the number that same device?
eg Which of these statements is true?:
You can chain up to 8 Txo on the same bus
OR
Txo will only work if there are <= 8 devices on the same bus.

tl;dr here’s my i2c case:


The MP doesn’t yet have the headers and a White Whale is en route. Can I run all 10 on the same bus?