eptheca

Can I connect my MBCV V2 (STM32F4) to my SEQ V4 (STM32F4) with MIDI over USB? Up until now I have used the CV V2 with a PC over USB and powered with a USB hub. But if I power it with a power supply, can the SEQ send MIDI through USB to it.

I guess I will just have to try it when I get there ;) It would make my build better and easier

I guess I was a bit unclear my question was really if I can have 50 cm. cables between the Core module and the MIDI I/O and Quad IIC modules

I'm planning on 12 MIDI OUT and 4 IN, so I need 2x MIDI I/O boards and 2x Quad IIC boards I am housing it in a 19" rack flight case

the way I am casing my SEQ V4 (STM32F4) there will be a 50 cm. distance between the Core and the MIDI sockets. either I can have the MIDI I/O and Quad IIC boards close to the Core, and 50 cm. cables to the sockets, or I can mount the boards to the back plate, and have 50 cm. cables to the Core. Is it a cable length problem with the MIDI I/O and IIC boards, like it is with the DIN/DOUT/AOUT? It would be a lot easier to just stretch 3 flat ribbon cables from the Core to the boards, than 2-3 wires from each IN/OUT (with 4 IN and 12 OUT, that's 44 wires soldered / crimped on each side :sad: )

from what I understand, the "Plus" part doesn't have a release date, but the SEQ V4 is updated/improved constantly I don't get the "extra hardware hassle" From my point of view the STM32F4 core is an easier build, and having the MIDI ins/outs on a separate board is better The USB connection is on the DISCOVERY board, Micro USB directly over the SD card on the Core To power the SEQ V4 through the USB cable, you should have a USB Hub with external power

does anybody have a .svg / .dwg / .fpd of the case front or drawing of the CS PCB with measurements cheers

OK, thank you :)

Hi, I would like the two sammichSIDs without chips PM'ed

I had a problem when compiling

Hi, When compiling the mbhp_iic_midi_v1_0c firmware I get a warning for this line in the code :list p=16f88 Warning[215] Processor superseded by command line. Microsoft Windows [Version 6.1.7601] Copyright (c) 2009 Microsoft Corporation. All rights reserved. C:\Windows\System32>cd c:\midibox\mbhp_iic_midi_v1_0c_hack c:\midibox\mbhp_iic_midi_v1_0c_hack>SET PATH=C:\MSYS\1.0\bin;C:\Program Files (x 86)\gputils\bin;C:\Program Files (x86)\SDCC\bin;%PATH% c:\midibox\mbhp_iic_midi_v1_0c_hack>make rm -rf _output/* rm -rf _output rm -rf *.cod *.map *.lst rm -rf *.hex mkdir -p _output gpasm -c -p p16f88 -I./src -DDEBUG_MODE=0 src/main.asm -o _output/main.o src/main.asm:13:Warning[215] Processor superseded by command line. gpasm -c -p p16f88 -I./src -DDEBUG_MODE=0 src/flash.asm -o _output/flash.o src/flash.asm:13:Warning[215] Processor superseded by command line. gpasm -c -p p16f88 -I./src -DDEBUG_MODE=0 src/midi.asm -o _output/midi.o src/midi.asm:13:Warning[215] Processor superseded by command line. gpasm -c -p p16f88 -I./src -DDEBUG_MODE=0 src/prot.asm -o _output/prot.o src/prot.asm:13:Warning[215] Processor superseded by command line. gpasm -c -p p16f88 -I./src -DDEBUG_MODE=0 src/iic.asm -o _output/iic.o src/iic.asm:19:Warning[215] Processor superseded by command line. gpasm -c -p p16f88 -I./src -DDEBUG_MODE=0 src/iic_cmd.asm -o _output/iic_cmd.o src/iic_cmd.asm:26:Warning[215] Processor superseded by command line. gplink -s project.lkr -m -o project.hex _output/main.o _output/flash.o _output/m idi.o _output/prot.o _output/iic.o _output/iic_cmd.o c:\midibox\mbhp_iic_midi_v1_0c_hack> I use the MSYS / gputils / SDCC chain It still compiles a .hex Does the warnings matter? ( I have searched the forum and web, but can't find an answer) Any suggestions to what could be wrong Best regards Halvor

I am not quite sure what you have done, I don't get the illustration, but here is the info http://www.bigmech.com/misc/c64mods/feedbackloop.html like here, I use a 500K,

Thank you Thorsten Great news

Dear Thorsten, Could you please explain how the "hacked firmware" works. http://ucapps.de/midibox_seq_manual_hw.html 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

Thank you TK, I have looked at it, but still not sure how I would do it. The tuning I want to use is not a tempered scale, where all the semitones are evenly spread out. I have all the Hz frequencies for each semitone Is it possible to just calculate each value manually, and change them? For example, in my scale C2 is 128.000 Hz Which values in the code would need to be changed, and how would I calculate them from the Hz value db 0xac, 0x10 ; 130.813 Hz (4:0ac C-2) db 0xb6, 0x10 ; 138.591 Hz (4:0b6 C#2) db 0xc1, 0x10 ; 146.832 Hz (4:0c1 D-2) db 0xcd, 0x10 ; 155.564 Hz (4:0cd D#2) db 0xd9, 0x10 ; 164.814 Hz (4:0d9 E-2) db 0xe6, 0x10 ; 174.614 Hz (4:0e6 F-2) db 0xf3, 0x10 ; 184.997 Hz (4:0f3 F#2) db 0x02, 0x11 ; 195.998 Hz (4:102 G-2) db 0x11, 0x11 ; 207.652 Hz (4:111 G#2) db 0x22, 0x11 ; 220.000 Hz (4:122 A-2) db 0x33, 0x11 ; 233.082 Hz (4:133 A#2) db 0x45, 0x11 ; 246.942 Hz (4:145 H-2) db 0x58, 0x11 ; 261.626 Hz (4:158 C-3) db 0x6d, 0x11 ; 277.183 Hz (4:16d C#3) db 0x83, 0x11 ; 293.665 Hz (4:183 D-3) db 0x9a, 0x11 ; 311.127 Hz (4:19a D#3) db 0xb2, 0x11 ; 329.628 Hz (4:1b2 E-3) db 0xcc, 0x11 ; 349.228 Hz (4:1cc F-3) db 0xe7, 0x11 ; 369.995 Hz (4:1e7 F#3) db 0x04, 0x12 ; 391.996 Hz (4:204 G-3) db 0x23, 0x12 ; 415.305 Hz (4:223 G#3) db 0x44, 0x12 ; 440.000 Hz (4:244 A-3) db 0x66, 0x12 ; 466.164 Hz (4:266 A#3)

thanks warpboy, I was waiting for the seq pcb and thanks to you Tim AKA "not Mike" the new shop layout looks and works great Happy New Year to you all

I would like to try out different tuning on my MIDIbox synths. I have found the mbfm_frq_table.inc, but I am not sure how the values work. It's a little bit different from the SID Can some one please explain to me which values to change, and how to calculate them I assume it's not as simple as just changing the Hz. values Best regards Halvor

I would like to try out different tuning on my MIDIbox synths. I found the sid_frq_table.inc, but I don't understand how the values have been calculated. Could someone please help me with a formula or description on how to use the frequencies I want to have to calculate HEX values for the SID V2 Best regards Halvor

PM sent :)

thanks :)

I'm looking for a type of flat cable with solid or tinned copper, and with "double spacing" 2,54mm. I see it often used to connect pcb's Here on MIDIbox, I think people use it in the MB-6582 Any suggestions on what exactly it's called? A brand? Where to get it? ( I'm in Norway, Europe) I have of course googled, searched on Mouser, Farnell and Elfa Cheers

Thank you :) I am just learning to use it