eptheca

I would like to have two clock outputs from my SEQ V4 to sync two delay/echo effect pedals to the sequencer. The effect pedals have a tap tempo, and I wonder if anybody think/know if this is possible. If I understand correctly the STM32F4 core can have 8 clock outputs. Are these suitable for this purpose? Is it just a normal DOUT circuit?

http://www.ninstrument.com/?p=1892

Hi casius, Yes that one will work, mine has a "weird" package Do as you suggest: >remove bc337 & resistors, add bridge >remove P1 (LUMI) 10k trim pot, I cut the third leg on the new trimmer, and mounted the two others to Ground and the bridge to B- Before you connect the LCD's, measure the new trimmer, and set it to 2-3K so you can slowly increase the power The LCD's are connected in series with one flat-cable to J15B, because in my case I could use a shorter cable if it went to display 2 first. I cut the wire from E after the connector to the closest display, and ran a separate wire to E from the other, to E on J15A. Hope that explains it :)

well, to be accurate be sure to use the files for pic18f4685 ;)

yes, that is true, some USB 3.0 ports deliver 900mA, which could be enough the standard usb 2.0 port delivers 500mA, which is not enough for a SEQ V4, but it also depends on the CS, LED's, LCD's etc.

yes you can power the SEQ V4 over USB, but use a powered Hub, the computer socket will not work

You can even have 12 MIDI OUT. 2xI/O 2xQuad IIC

I have my MBCV V2 connected to the SEQ V4 in USB MIDI host mode It runs fine I haven't connected a keyboard, but it should work the same. Since a USB hub is not supported, only one thing can be connected at a time

thanks guys for the kind words :) slo, here's the link to Altitude's tip, Lamouette, -Core STM32F4 -MIDI I/O x 2, chained and connected to Core on J11E -Quad IIC x 2, chained and connected to Core on J4A -SEQ CS, connected to Core on J8/9 -BLM 16x4, connected to SEQ CS on J2 -TPD, connected to BLM on J1 I just finished it, so I have just scratched the surface on how to use it. I now have 10 sound chip based synths/sound modules in my setup, and wanted direct MIDI connections for all of them. The BLM gives me direct control of the 4 tracks in the group selected With the TPD I can see and adjust the BPM, pluss its blinking and blinging ;) I find out something new every time I use the SEQ V4, and with the rate of new features, I don't expect to ever totally master it I have put in a lot of effort and money to make it look and feel as "pro" as possible, but the "amazing, awesome and outstanding" part is Thorsten's MB SEQ V4 firmware. I have looked around, and can't find anything close to it. It's in it's own league.

In the beginning of this year I decided I was going to finally build The Sequencer. I built my first MIDIbox project 4 years ago, a stereo MB SID, and have been hooked since. Next to my kids, this is the greatest thing in my life, I love it. There's so many great tutorials and tips on the forum about building the SEQ V4, so there's not really a need for another one, but I thought I'd share a few things I did in my build. I used the STM32F4 based Core, with the now available PCB. To save some space in the case, I moved and removed some parts. Removed the jack and the button caps. Cut the buttons and some pins. Moved some pins to the underside. I used the Kyocera LCD's, and read a tip by Altitude about the back light. I omitted the transistor and the resistors, put in a bridge and a multiturn trim pot. Like sometimes at Mouser, the part doesn't look like the picture, but it sort of fits ;) I wanted the max MIDI OUT's, so I used 2xMIDI I/O and 2xQuad IIC boards for 12 OUT and 4 IN The PICs on the second Quad IIC board needs a modified firmware. Tim AKA "Not Mike" AKA SmashTV has it now, but if you want to burn it yourself, it's downloadable further down. The rest of the build is pretty standard. Wilba PCB, Schaeffer front panel and common parts. The case is laser cut acrylic done locally. With the mods on the Core, it's only 4 cm. high :smile: While I was at it, I built the BLM 16x4 and TPD as well (FPD file further down) The last piece was the tinted windows on the TPD, and they really look great I think I am very happy with it, and it's so much fun to play. Thank you TK for everything. Thank you Wilba for the PCB ++ Thank you SmashTV for your shop and service ++ Thank you ilmenator for the BLM and TPD, and the "bling" and of course thanks to the rest of you for all the help, support and inspiration. Beers all around edit: I thought I could buy you all beers, but it's only TK that has a working link Wilbas redirects to a Rick Astley video :), and the others don't have one oh well Cheers Hal iic_hack.hex TPD+BLM_19.fpd

I don't understand this message "MIDI protocol TIMEOUT" on the MBCV

you're welcome :) here's the one with the TPD on the left TPD+BLM_19.fpd

OK. Thanks TK. Forget about it, it sounds like too much work, and if Note On, Velocity = 0 is the standard, we'll stick to that. For my synths, they are custom / home made stuff. I will try to change the firmware in them in stead.

is it a way to have the SEQ V4 send note off (80) in stead of note on (90) with 0 velocity? I have a synth that doesn't care about velocity, and therefor triggers twice on each note