Highly Liquid Forum

Highly Liquid Forum http://forum.highlyliquid.com/ Highly Liquid Product Support; DIY MIDI Controllers, MIDI Decoders, MIDI Encoders, MIDI Retrofits, DIY Electronics Discussion en Sat, 25 May 2013 11:45:08 GMT vBulletin 60 http://forum.highlyliquid.com/images/misc/rss.jpg Highly Liquid Forum http://forum.highlyliquid.com/ Different Switch Combos for Different MIDI Output? http://forum.highlyliquid.com/showthread.php?t=1061&goto=newpost Thu, 23 May 2013 22:50:35 GMT Hi,

Let's say I had 2 4-pole rotary switches wired to a total of 8 control terminals on the MIDI CPU. Is it possible to configure the MIDI CPU to output unique MIDI data based on different combinations of the 2 switches?

For example:

Switch1(position2) + Switch2(position3) = MIDI Note On #60
Switch1(position2) + Switch2(position4) = MIDI Note On #70
Switch1(position1) + Switch2(position1) = MIDI Note On #80

etc.

With that in mind, would it also be possible to use one switch at a time for unique output? Say if I had a 3rd switch managing the connection between one of the rotary switches and the CPU?

For example:

Switch1(position2) + Switch2(NULL) = MIDI Note On #74

Null = Switch2 circuit is disengaged.

etc.

Possible?

Many thanks! ]]> MIDI CPU theFlaneur http://forum.highlyliquid.com/showthread.php?t=1061 How can I test MIDI output from a Mac to the MD24? http://forum.highlyliquid.com/showthread.php?t=1060&goto=newpost Thu, 23 May 2013 06:16:23 GMT hi, i've just purchased the MD24 and plan to develop a project that 'plays' 16 servo motors from a MIDI source.

I'm not at all familiar with MIDI and need to test the MD24.

Can anyone suggest a simple software solution that will:

1) Allow me to play /edit a MIDI file on a Mac (MacBook Pro)
2) Allow me to send/export the MIDI data to the MD24 (I have USB MIDI cable) so i can test it

Any advice would be greatly appreciated.

Thanks, Oscar ]]> MD24 Oscar http://forum.highlyliquid.com/showthread.php?t=1060 Pro Tools Record Indicator http://forum.highlyliquid.com/showthread.php?t=1059&goto=newpost Mon, 20 May 2013 16:45:52 GMT Hi,

I am just trying to have the MSAT respond when Pro-Tools is recording so that the MSAT can trigger a relay and "Recording" light that I already have set up.

Is this possible?

I just don't know how to program the MSAT to do this. ]]> MSA-P, MSA-R, MSA-T mgrsburbank http://forum.highlyliquid.com/showthread.php?t=1059 Noob questions about triggering solenoids http://forum.highlyliquid.com/showthread.php?t=1058&goto=newpost Sun, 19 May 2013 02:16:28 GMT Hi,
I’m beginning a project where, essentially, three or four solenoids are triggered by MIDI, using one of the Highly Liquid interfaces. I am new to most aspects of setting this up.

I’m aware that many other people have made the same device.

I have a bunch of questions I hope you can help with (I’m sure these are “standard”).

* What sort of power should the solenoids be? I’m hoping to use them to actuate small wooden or metal levers to strike small hand-made percussion instruments. Would a 12 volt solenoid do the trick? I’ve mucked around with 12 volt solenoids, and they seem to have plenty of torque… but am I right?

* Please tell me if I’m thinking about this correctly:

1) The solenoid is powered by its own power supply (e.g. 12 volt DC), and its voltage is switched on and off by a transistor which is triggered by the 5 volts supplied by the Highly Liquid device).

2) I understand that because of their inductance, solenoids will push current back when switched off, and this can be problematic. Therefore, you need a diode to go in parallel with the solenoid, to dissipate the current when the solenoid goes off.

* Are there any other components needed in the above arrangement?

* I still can’t “mentally picture” the circuit. Are there any schematics for what I’m thinking of doing?

* How do I establish a) what transistor I am to use, and b) what diode I am to use?

* Are there any other issues I should be aware of in order to achieve what I’m aiming for?

* Noob question: What are “terminal blocks” in the MSA-T kit? I’m happy to solder one up myself (have done soldering before), but I don’t know what the terminal blocks are for.

Thanks in advance,

-
Tom ]]> Praxisaxis http://forum.highlyliquid.com/showthread.php?t=1058 Nord Drawbars http://forum.highlyliquid.com/showthread.php?t=1057&goto=newpost Sun, 19 May 2013 00:32:15 GMT Hello All I just completed my project, a set of Hammond drawbars to control a Nord Electro 3. Amazingly it worked right off the bat first time. A... Hello All
I just completed my project, a set of Hammond drawbars to control a Nord Electro 3. Amazingly it worked right off the bat first time. A big thank you to all the great info on this forum, I've done some electronic projects before, but no programming, but I modified a sysex file from another project on the forum, and it worked perfectly. The drawbars themselves are hooked up to control 10k linear slide pots, I took out the original resistor wires after hearing about the headaches others had trying to make them work without modification. The hardest part was physically fitting everything into a box small enough to fit on top of the Nord.

]]> MIDI CPU cjfox http://forum.highlyliquid.com/showthread.php?t=1057 Oberheim OB-Xa MIDI Retrofit http://forum.highlyliquid.com/showthread.php?t=1056&goto=newpost Thu, 16 May 2013 19:00:39 GMT C. writes: ---Quote--- I have an OB-Xa im going to use your UMR2 on and want to make sure i wire this right.. Im including the schematic of... C. writes:

Quote:

I have an OB-Xa im going to use your UMR2 on and want to make sure i wire this right..

Im including the schematic of the OB_Xa that clearly shows the matrix.. (page 50)
my question is the control lines to the UMR2 go closer to the keyboard lines or more towards the CPU..

The data lines already have pullups so i am assuming that the UMR2 go hear and should have the POL setting set for pullups???? and the select lines going to the chip U12 on keyboard side..

Could you advise me on where to wire the UMR2 in..

I'm attaching a PDF of the page that contains the keyboard schematic.

Important:

Since the OB-Xa has an "active low" matrix configuration, connect the UMR2 polarity jumper like this:

In the attached PDF schematic:

- U21 pins 0-7 are the matrix select signals. Connect these pins to UMR2 "select in" terminals 1-8.

- pins SWD0-SWD7 are the matrix data lines. Connect these pins to UMR2 "data in/out" terminals 1-8.

Let me know how it turns out. :)

Attached Images

OB-Xa.pdf (118.7 KB)

]]> UMR2 John http://forum.highlyliquid.com/showthread.php?t=1056 New User ! Terminal 01 send multiple notes http://forum.highlyliquid.com/showthread.php?t=1055&goto=newpost Thu, 16 May 2013 15:32:04 GMT Hello,
I'm new with midi cpu.
I made a little matrix with 4 select lines and the first 8 terminals are the notes.
The problem is that the terminal "01" (the second terminal), when pressed, instead of sending one note, send at the same time 2 or 3 notes...

I've changed the ADC settings (threshold=14h, smoothing=03h), but the problem is still here.
I tried with another button, the problem is still here...

Maybe my sysex is wrong...
Some body can help me ?
Here is the main sysex :

F0 00 01 5D 04 01
00
00 00 7F 00 00 00
00 01 7F 00 00 00
01 00 7F 00 00 00
01 01 7F 00 00 00
02 00 7F 00 00 00
02 01 7F 00 00 00
03 00 7F 00 00 00
03 01 7F 00 00 00
04 00 7F 00 00 00
04 01 7F 00 00 00
05 00 7F 00 00 00
05 01 7F 00 00 00
06 00 7F 00 00 00
06 01 7F 00 00 00
07 00 7F 00 00 00
07 01 7F 00 00 00
08 00 2C 00 24 00

09 00 2C 00 2C 00

0A 00 2C 00 34 00

0B 00 2C 00 3C00

0C 00 44 00 00 7F
0C 01 44 00 00 00
0D 00 44 00 01 7F
0D 01 44 00 01 00
0E 00 44 00 02 7F
0E 01 44 00 02 00
0F 00 44 00 03 7F
0F 01 44 00 03 00
10 00 04 00 40 03

11 00 04 00 41 04

12 00 04 00 42 05

13 00 04 00 43 06

14 00 04 00 44 07

15 00 04 00 45 08

16 00 04 00 46 09

17 00 04 00 47 0A

F7

Thank's for the help !!! ]]> MIDI CPU pittoul http://forum.highlyliquid.com/showthread.php?t=1055 4-switch footswitch with indicator LEDs http://forum.highlyliquid.com/showthread.php?t=1054&goto=newpost Thu, 16 May 2013 01:27:06 GMT J. writes: ---Quote--- I have a four momentary button footswitch that I would like toggle the following CC’s on MIDI Channel 2.... 92, 93, 94... J. writes:

Quote:

I have a four momentary button footswitch that I would like toggle the following CC’s on MIDI Channel 2.... 92, 93, 94 and 95

I would also like an LED above each Switch to show the state of the CC’s (127 =LED ON, 0 = LED OFF)

Here is one of many ways to set this up:

For more information about LEDs and the current limiting resistors, see this thread:

http://forum.highlyliquid.com/showthread.php?t=378

To configure the MIDI CPU, send two separate sysex messages. I will post them in a follow-up message. ]]> MIDI CPU John http://forum.highlyliquid.com/showthread.php?t=1054 Using the MIDI CPU w/Yamaha BC3A http://forum.highlyliquid.com/showthread.php?t=1053&goto=newpost Tue, 14 May 2013 16:05:31 GMT I am considering getting the MIDI CPU so I can use it with my old Yamaha breath controller to have a small breath-to-midi converter for playing live.... I am considering getting the MIDI CPU so I can use it with my old Yamaha breath controller to have a small breath-to-midi converter for playing live.

I've searched this forum and found several threads dealing with interfacing a pressure sensor for use as a breath controller. I don't really want to build the breath controller – I just would like to use my BC3A.

This question is not really about the MIDI CPU, but more a query to see if anyone here has successfully interfaced any Yamaha BC with it. I know the MIDI CPU needs to see 0 to 5 volts but I am unsure of what the voltage the BC3a uses for power, or what range of voltages it produces for the breath output (a preliminary web search turned up nothing but I'm still looking). If I can't get 0 to 5 volts from it without a lot of additional circuitry then I may have to pass on the MIDI CPU. I already have a Kurzweil ExpressionMate that does the job, but it's much bulkier and uses a wall wart. The idea of having a tiny, 9v battery-powered box is very appealing and I'm hoping this can be done! TIA for any tips. ]]> MIDI CPU reezekeys http://forum.highlyliquid.com/showthread.php?t=1053 Keyboard Daisy-Chain http://forum.highlyliquid.com/showthread.php?t=1052&goto=newpost Tue, 14 May 2013 00:36:51 GMT I've configured switch matrices for two keyboards and a pedalboard on three individual CPU boards. No problems. You have a great product!

I would like to daisy-chain two CPU boards --- one for channel 1, the other for channel 2 --- so that I only need one cable to go to a Midiman box. I have the output of the channel-2 board connected to the input of the channel-1 board, and the output of the channel-1 board connects to the Midiman box. I programmed the channel-1 board with 00 as the channel number in the sysex switch-matrix code, and I programmed the channel-2 board with 01. The channel-2 board has a jumper to achieve the channel change.

After all this, both keyboards produce sound in channel 1 as if they are coupled together. I'm wondering if daisy-chained matrix keyboards are possible.

Thanks in advance for any advice. ]]> MIDI CPU noel51 http://forum.highlyliquid.com/showthread.php?t=1052 Programming problem http://forum.highlyliquid.com/showthread.php?t=1051&goto=newpost Mon, 06 May 2013 11:20:33 GMT I´ve searched the forum for other answers regarding this, but I haven´t found any final solution to my problems. I upgraded the firmware of my... I´ve searched the forum for other answers regarding this, but I haven´t found any final solution to my problems.

I upgraded the firmware of my MIDI-CPU to 1.4 Beta3, and have since programmed it two times successfully. But not any more.

The unit works as intended with the latest successful sysex program, but now I need to change it, and I have tried all of my MIDI outputs (on interfaces from different manufacturers) and also tried to connect the unit directly to each output without any luck.

Of course I could try a sysex dump procedure, but it requires some internal rewiring on my synth and since its behaviour hasn´t changed since last successful program I don´t think that it is necessary.

Should I try reprogramming the firmware? ]]> MIDI CPU Hackemoff http://forum.highlyliquid.com/showthread.php?t=1051 Firmware 3.3 Features Discussion http://forum.highlyliquid.com/showthread.php?t=1050&goto=newpost Thu, 02 May 2013 16:35:00 GMT MSA Firmware 3.2 (http://forum.highlyliquid.com/showthread.php?t=452) has been a success but new features are being requested... MSA Firmware 3.2 has been a success but new features are being requested:

- The ability to generate "pulsed" output from the MSA when a preset is recalled.

- Allowing for a configurable delay between the receipt of a MIDI message and the output response from the MSA.

Previously requested:

- Note "match only" individual output mode.

- The ability to control MSA outputs using sysex messages.

It's not certain that these will be implemented, but I am using this thread to record the requests. Please feel free to add more feature requests below. ]]> MSA-P, MSA-R, MSA-T John http://forum.highlyliquid.com/showthread.php?t=1050 Casio SK60 and UMR2 http://forum.highlyliquid.com/showthread.php?t=1049&goto=newpost Wed, 01 May 2013 03:36:30 GMT Hi John, Just got an SK60, I was wanting to know how I would hook the UMR2 up to it. Here is the key matrix diagram attached - it looks pretty... Hi John,

Just got an SK60, I was wanting to know how I would hook the UMR2 up to it. Here is the key matrix diagram attached - it looks pretty standard casio. I take it that the first 4 lines terminating to the block tags JA1-12 labelled KIO0-3 are the Data I/O lines that would go tothe first 4 of the 8 UMR2 Data I/O terminals, the other 8 JA lines would connect to the first 8 Select IN terminals of the UMR2?

Or has someone already documented the SK60 installation?

Cheers, Graham

Attached Images

]]> UMR2 gmeredith http://forum.highlyliquid.com/showthread.php?t=1049 MIDI CPU Logic Input Voltage Level Reduction http://forum.highlyliquid.com/showthread.php?t=1048&goto=newpost Tue, 30 Apr 2013 17:27:49 GMT P. writes:

Quote:

I've got a midi cpu being fed logic level signals generated by my analog modular sequencer. As they enter the midicpu, the signals are right at 5.9v.

Documentation states: max level for input signals may not exceed vREG, which is 5.05v in my case.

In your opinion:

Am I "reasonably close enough" on this one, being just .85 volt over vREG?

Or- does this constitute a serious danger to the microcontroller, and I absolutely have to drop those signals?

The manufacturer of the MIDI CPU microcontroller suggests that Vdd (thus, Vreg or 5.0V) is the safe limit. Therefore, I must recommend some sort of voltage limiting mechanism.

If you are confident that the logic signal maximum is no more that 5.9V, you can use simple resistor-based voltage division. For example:

To make the circuit more robust, the 4.7k resistor could be replaced with a 4.7V zener diode. This would allow for logic voltages higher than 5.9V. (Be sure to calculate currents and compare to the component specs!) ]]> MIDI CPU John http://forum.highlyliquid.com/showthread.php?t=1048 preset mode help needed http://forum.highlyliquid.com/showthread.php?t=1047&goto=newpost Mon, 29 Apr 2013 09:47:21 GMT guys,how do i set pc to pulse mode(momentary) over more than 8 patches? thanks in advance . Keith guys,how do i set pc to pulse mode(momentary) over more than 8 patches?
thanks in advance .
Keith ]]> MSA-P, MSA-R, MSA-T keithf http://forum.highlyliquid.com/showthread.php?t=1047