16n is a bank of faders [release thread] [current version:1.33]

#143

I briefly had a similar issue with my first build. You should reflow the IC’s and check that all the pins of the faders are properly soldered.

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#144

Yep, that did the trick. All well now :slight_smile:

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#145

I’ve had this problem too. From what I vaguely remember: it means a joint on an op-amp isn’t right, and so the divided-down signal isn’t being fed into the mux - meaning that sometimes 5V-ish goes into the mux and you get crosstalk on the channels. This is what that little webmidi webpage was useful for - working out which IC probably had a dud connection and was making a mess.

Glad you got it sorted.

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#146

Yeah, this is a really nice solution. I’m going to work on a release.

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#147

I’ve just pushed out the 1.32 release.

All the hardware is unchanged. This release just fixes I2C, adds a ‘flip’ config option to invert the faders for upside-down use, and fixes the panel DXFs to have the right size holes.

I note that “fixes I2C” is more significant for some of you than others.

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#148

While we’re on the topic of i2c addresses, is there anyone else who thinks it might be useful to have multiple addresses reserved for faderbanks, similarly to how ER-301 and the teletype expanders have multiple addresses? I built two 16ns and while I currently only have one hooked up via i2c, I’d prefer to have both connected to the teletype.

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#149

Yes, it’s been discussed here https://github.com/16n-faderbank/16n/issues/16 :slight_smile:

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#150

Whoops, I should really remember to look for github issues first :slight_smile:

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#151

for flipping i think we should just add a tt op FB.FLIP, this way no need to rebuild/have 2 different versions of 16n firmware. i can add that when i get a chance.

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#152

Thanks ! And about adding more addresses for the faderbanks (0x35 etc), do you think it’s possible ?

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#153

it’s not an alternate version. It’s just the latest version. it should have been in to begin with! By which I mean: it is also of use for people using MIDI.

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#154

sorry, i misunderstood then - how is the option set?

it’s possible but it would require having some way to choose which address 16n would use. not sure if there is a way to do that without having to recompile firmware.

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#155

Ah, I think I see your point. It’s set at build time in the config.h file. So: it’s not a thing you’d toggle on and off a lot. But it is a thing you might still want to permanently set on the object (until you reflash it), hence making it a config option, like REV before it. (A USB bootloader really helps with firmware alteration, as opposed to more serious programming tools).

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#156

yeah that’s how i understood it and what i meant as having to build a different version of firmware with the option changed to flipped. with teletype op you wouldn’t need to, all conversion would be done on the teletype side. but yeah i can see how it would still be useful for 16n in master mode and for MIDI (which would need to be converted on 16n itself).

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#157

I understand. Yes, on the 16n side, that means recompiling the firmware with the new address, modifying a couple of lines or maybe a variable in configuration.h (my faderbank is always connected to the computer for power, so recompiling takes a few seconds with the Arduino software) It would give the possibility to use two faderbanks on the same I2C bus, that would be great. But I guess that implies more changes in the Teletype firmware than just adding more addresses (?) One could use FB 1 to 16 for the first faderbank, then FB 17 to 32 for the second one etc.

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#158

yeah, that would require a change in teletype firmware.

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#159

The other option for using two faderbanks on the same I2C bus being: two masters on the same bus, TT and 16n at the same time, but I understand that’s a possible source of problems :slight_smile: as discussed here

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#160

yeah that would be a possible workaround but this will likely cause issues with a multi leader set up.

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#161

I have two faderbanks here, I will try this out tomorrow, we’ll see what happens (one in slave mode for TT and the other in master mode for the Er-301) :slight_smile:

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#162

I’m going to want a method for flipping my 16n that doesn’t require teletype and I’m fine with flashing a different firmware or whatever is necessary to accomplish it. So, if a new teletype op is added or whatever, that’s fine but I hope it isn’t the only available method.

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