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+---- Thread: I2c possibilities (/showthread.php?tid=1587)
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I2c possibilities - Zosimos - 07-12-2023
With the new device coming out, I’m considering making a few changes to my box. Was wondering if this would be possible:
A sweet sixteen fader I2c into the Nseq
The Nseq out to two ER-301s
+ How might I include a just friends in there or am I out of I2c
———
Is it possible to split an I2c signal to two different destinations. I know two I2c masters is not good.
I don’t own a just friends but it seems interesting.
RE: I2c possibilities - XORadmin - 07-12-2023
(07-12-2023, 07:18 PM)Zosimos Wrote: With the new device coming out, I’m considering making a few changes to my box. Was wondering if this would be possible:
A sweet sixteen fader I2c into the Nseq
The Nseq out to two ER-301s
+ How might I include a just friends in there or am I out of I2c
———
Is it possible to split an I2c signal to two different destinations. I know two I2c masters is not good.
I don’t own a just friends but it seems interesting.
2 ER301 and a Just friends should theoretically work since these are all 3 followers (assuming they are all set to a different address.
And indeed, 2 Leaders on one line are not possible.
RE: I2c possibilities - geremy - 07-13-2023
My current tiny case has Crow, ER-301, TXi, & Nerdseq but I may have to take out the TXi to fit the i2c expander. Right now Crow is the leader but it can be changed to a follower when necessary. I also have a teletype but moved it to a different case when I bought the nerdseq, but the external i2c port on the expander has me curious to see if I can put the teletype and TXi into a 4ms pod and marry it to the Nerdseq...
RE: I2c possibilities - XORadmin - 07-13-2023
(07-13-2023, 01:30 AM)geremy Wrote: My current tiny case has Crow, ER-301, TXi, & Nerdseq but I may have to take out the TXi to fit the i2c expander. Right now Crow is the leader but it can be changed to a follower when necessary. I also have a teletype but moved it to a different case when I bought the nerdseq, but the external i2c port on the expander has me curious to see if I can put the teletype and TXi into a 4ms pod and marry it to the Nerdseq...
I am curious about that, too. We got to see how and how deep the implementations will be in the end. The teletype is a leader-only one and will so only give either instructions or will request values (as with like the TXi or the 16n). I am pretty sure they are use-cases popping up on the way and I will review these and the integration with the NerdSEQ.
What I won't to is to integrate the full I2C stack of the teletype. Mostly since this is all very specific stuff and in the end the most interesting stuff are the CV and Gate values.
RE: I2c possibilities - XORadmin - 07-24-2023
A liitle update about that:
Up to 4 x sweet 16 / 16n (if in follower mode and each got its own address (I will provide updated 16n firmwares to use a different address)) are possible per I2C Port on the NerdSEQ. So a setup like 2x er301 and 4x 16n is definitely possible!!!
RE: I2c possibilities - geremy - 07-24-2023
That is monstrous.
RE: I2c possibilities - Zosimos - 07-24-2023
(07-24-2023, 01:23 PM)XORadmin Wrote: A liitle update about that:
Up to 4 x sweet 16 / 16n (if in follower mode and each got its own address (I will provide updated 16n firmwares to use a different address)) are possible per I2C Port on the NerdSEQ. So a setup like 2x er301 and 4x 16n is definitely possible!!!
woah.
RE: I2c possibilities - FooFee - 11-26-2025
(07-24-2023, 01:23 PM)XORadmin Wrote: A liitle update about that:
Up to 4 x sweet 16 / 16n (if in follower mode and each got its own address (I will provide updated 16n firmwares to use a different address)) are possible per I2C Port on the NerdSEQ. So a setup like 2x er301 and 4x 16n is definitely possible!!!
I have a 16n and sweet16 followers but I can't figure out how to change the adress of one of them to use them both with port A and port B. Could you tell me how to do that, and if it's the only thing I have to do, or if it's something else, please? Maybe something in the settings (well I will change one adress in the settings of the nerdseq after that)
RE: I2c possibilities - XORadmin - 11-27-2025
(11-26-2025, 05:43 PM)FooFee Wrote:Hey,(07-24-2023, 01:23 PM)XORadmin Wrote: A liitle update about that:
Up to 4 x sweet 16 / 16n (if in follower mode and each got its own address (I will provide updated 16n firmwares to use a different address)) are possible per I2C Port on the NerdSEQ. So a setup like 2x er301 and 4x 16n is definitely possible!!!
I have a 16n and sweet16 followers but I can't figure out how to change the adress of one of them to use them both with port A and port B. Could you tell me how to do that, and if it's the only thing I have to do, or if it's something else, please? Maybe something in the settings (well I will change one adress in the settings of the nerdseq after that)
the thing is that you need a firmware which is set to a different address. Depending on which 16n you got you can probably do that in their online tool. I understand that they are different hardware versions so there is no generic file that would work for all.
If you only got these 2 units and nothing else on the I2C bus, then you can connect one to one port and then 16N->NS 1-16 and the other one on the other port to 16N-NS 17-32.
Both should work then while one generates faders 1-16 and the other one 17-32.
RE: I2c possibilities - FooFee - 11-27-2025
(11-27-2025, 02:13 PM)XORadmin Wrote:Hello,(11-26-2025, 05:43 PM)FooFee Wrote:Hey,(07-24-2023, 01:23 PM)XORadmin Wrote: A liitle update about that:
Up to 4 x sweet 16 / 16n (if in follower mode and each got its own address (I will provide updated 16n firmwares to use a different address)) are possible per I2C Port on the NerdSEQ. So a setup like 2x er301 and 4x 16n is definitely possible!!!
I have a 16n and sweet16 followers but I can't figure out how to change the adress of one of them to use them both with port A and port B. Could you tell me how to do that, and if it's the only thing I have to do, or if it's something else, please? Maybe something in the settings (well I will change one adress in the settings of the nerdseq after that)
the thing is that you need a firmware which is set to a different address. Depending on which 16n you got you can probably do that in their online tool. I understand that they are different hardware versions so there is no generic file that would work for all.
If you only got these 2 units and nothing else on the I2C bus, then you can connect one to one port and then 16N->NS 1-16 and the other one on the other port to 16N-NS 17-32.
Both should work then while one generates faders 1-16 and the other one 17-32.
thanks for your answer. So i have a atov 16n faderbank (waiting for their answer if i can change the adress with their help because i couldt find how to do it on the web editor), and a sweetsixteen mk2 by tesseract.
Actually the solution you propose doesn't seem to fit my needs, or maybe I didn't understand something.
I want to be able to control, let's say for instance the ADSR parameters of env#1 of the nerdseq. So far, I could do it with this setting : midi/i2C setup > i2C A mode : NS ->16N 1-16. I thought there would be something like i2C B mode : NS ->16N 17-32 but there isn't.
So I guess with the setting i2C A mode : NS -> 2X 16N 1-32 could work, but I don't know how to do to connect the 2 i2c controllers to only A port.
Do I have to chain them somehow?
And I also tried the settings you mentioned, but then, the multi IO doesn't receive the signal anymore from the faders (no light blinking on the multi IO expander)