Up to 4 MBHP_IIC_MIDI modules can be added if desired (note: with a simple hack in the IIC firmware even 8 modules could be accessed from the sequencer - infos available on request).
So it looks like there is a hack for the firmware to achieve this. But still not sure what that is ,as well as how to actually achieve it on the hardware level.
It might involve specially programmed 16F88s. Note that the Quad IIC has a circuit-level implementation (EDIT pins 12 and 13 as shown on the schem.) for addressing the IICs (MIDI OUTs), so you might need a custom PCB for more outputs.
It might involve specially programmed 16F88s. Note that the Quad IIC has a circuit-level implementation (EDIT pins 12 and 13 as shown on the schem.) for addressing the IICs (MIDI OUTs), so you might need a custom PCB for more outputs.
Ok, that’s what I was afraid of… :) May have to later that for my next build or add it on at a later point.
you could also chain a few (two or three) synths via MIDI thru (if available) on every SEQ MIDI out chain - it does add a bit of latency, but not really audible. Like this you could add 12 synths to the four standard MIDI outs and live a happy life!
you could also chain a few (two or three) synths via MIDI thru (if available) on every SEQ MIDI out chain - it does add a bit of latency, but not really audible. Like this you could add 12 synths to the four standard MIDI outs and live a happy life!
Many greets,
Peter
The Midibox Seq that I’m building, I’m hoping to replace my Sequentix P3 with, which has 4 Midi Out’s, so I’m already doing that currently :)
Since this is going to be the heart of my studio, was just trying to maximize as much as possible. I may just have to make one with what I can right now,
and then when I can determine how to add more, make a new back panel to accomadate any changes that I make. I have some weird MAM Drum modules and other things that don’t have Thru’s and eat up my Midi setup quick and I have a MidiTimePiece AV but just looking to optimize things from the start as everything’s filled up now as it is.
I have a SEQv4 with 7 outs, I used the BLM connector as normal MIDI and used an IIC module (you can get kits from http://www.midibox-shop.com/buy.html). The additional 4 ports are USB but I don’t think these are designed to be connected to synths,they are used to connect to a PC/DAW.
In the documentation I changed the number of ports from “up to 11” (which was for the STM32F103 based core, and includes UART, IIC and USB) to “up to 12” for LPC17 based core.
I have ordered 2xQuad IIc + 8x16f88 from Tim, and asked him to burn them with this “hacked firmware”, but he didn’t know about it.
If I understand it correctly, I can have 12 MIDI OUT on the Seq 4 on STM32F4, 4 from 2x MBHP_MIDI_IO boards chained on J11E, and 8 from 2xQuad IIc boards connected to J4A and J4B.
Is the hack on the IIc firmware on the PIC’s, or in the Seq 4 firmware, or both?
I have ordered 2xQuad IIc + 8x16f88 from Tim, and asked him to burn them with this “hacked firmware”, but he didn’t know about it.
If I understand it correctly, I can have 12 MIDI OUT on the Seq 4 on STM32F4, 4 from 2x MBHP_MIDI_IO boards chained on J11E, and 8 from 2xQuad IIc boards connected to J4A and J4B.
Is the hack on the IIc firmware on the PIC’s, or in the Seq 4 firmware, or both?
Best regards, Hal
Hi Thorsten, I´m also intrested in this “Firmware Hack” rsp. how to implement this on the PIC 16F88 side.
Following up on Peter’s post: I’ve built three of these, 5x MIDI thru boards. It might be the IIC modules offer stuff which people need that is not available with these, but they’re simple enough to build on a proto board. They do require a PSU (or a battery), but one could probably equip the back of the SEQ4 enclosure with a few extra DC out sockets which just route out what’s going into the enclosure (given that you’re feeding DC into it). This way all you need is a cable to connect to the thru board (which has its own 5V regulator).
