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About Rowan

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    MIDIbox Guru
  • Birthday January 01

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  1. Coloured jacks sockets

    These sockets are made by Cliff Electronic Components ( The sockets that Expert Sleeps use are made of a semi clear plastic that is backlit by LEDs to give them colour. I’ve never seem them for sale anywhere. I guess the Expert Sleepers have them custom manufactured by Cliff. 
  2. MIDIbox SEQ V4 Release + Feedback

    I've just had a chance to test this with 2 x AOUT_NG boards and I think I've came across a bug. The shift register that is assigned to CV_GATE_SR2  in the HWCONFIG file will only trigger once and then remains on.  I thought I had a hardware problem initially but after some trouble shooting I'm pretty confident its a software problem, either user error or a bug. The reason this is that I swapped the CV_GATE_SR assignment for SR1 and SR2 in the hardware and the problem is always present Shift Register assigned to CV_GATE_SR2. Both of the AOUT_NG boards are working correctly.
  3. Using AOUT with Buchla 1.2v/octave

    I finally got around to trying this out last night with an AOUT_NG and got it working.  After testing a few values I settled on 10k as the replacement values for R9-R16 and could achieve 1.2V/Oct tracking.  I suspect if the values was a little higher e.g. 12k, I would have been able to calibrate the module to 1V/Oct and 1.2V/Oct with the trimmers.  
  4. I may be able to help you. I don’t have the PICs but I do have a programmer. If no one else has a better solution I can flash PICs. 
  5. Using AOUT with Buchla 1.2v/octave

    I’ve noticed that you are talking about the original AOUT module here. I would like to try this out with an AOUT_NG so I’ve tried to reverse engineer what you’ve done here to apply it to the AOUT_NG. I’m coming up a resistor value of 4.7k to replace the 15k resistor in the op-amp negative feedback loop to increase the max output voltage to 13.81V. I’ve based my calculations on Vref being set at 2.048V. Any thoughts on this?
  6. Using AOUT with Buchla 1.2v/octave

    Very cool. I’ll have to give this a try. 
  7. I’ve just managed to get this configuration to work. I ended up using Midi-Ox to send the CCs you listed about as I couldn’t get it to work using the MB-SEQ to send the CCs. I picked up a FHX-1 this week so I’ve got 16 CV Outs with the option to add another 48 channels in the future. 
  8. Thanks for this! Using presets to store this is a good idea rather than having to configure the module every time.
  9. I’m please it worked for you. I haven’t had a chance to try and get the LFO/Clock working yet. The documentation is poor to say the least so I think it will require some experimentation but I think it should work. It seems the easiest way to configure the module is with the web based script editor. If you haven’t come across this yet it’s here. i wish you luck for your party tonight and a happy new year.
  10. I Had a 4xDOUT connected to a Line Reciver that I have been using for clocks and gates, it worked well but I’m trying to get away from the Line Driver/Reciver method. I have been doing a bit more reading into how to get clock signals out of the FH-1 and the There seems to a solution that I’m yet to try. The FH-1 have An LFO avalible on each output that can be tempo synced, so the idea is to use a tempo synced square wave LFO as clock! Simple but effective. 
  11. I spent more time messing about with it last night and I’m happy to report it’s working as expected with very little effort. The only thing I have tried yet that I’ll need is getting it to output clock signals. Other than that it’s working perfectly. It seems that it also accet modular clock signals and convert them to midi clock, very useful. 
  12. Something that has always bugged me about the line driver/liner receiver solution for CV/GATE outs on the MBSEQ is that there is no easy way of isolating the 5V supply that is feed down the DB25 cable. I've always had the other end of the DB25 cable connected to my Eurorack case that has a local 5V supply so (in principal) I don't need 5V going down the cable.  I needed a CV/GATE solution that isn't Line Driver/Receiver or DIN MIDI for my MBSEQ. Today I noticed that my local modular seller was selling Expert Sleeper FH-1 (now discontinued) for a great price (Disclamer: I work for their parent company so I know how much these things cost the reseller). I thought I'd bit the bullet and see if it would solve my problem.... guess what, it did!  I'm not going to go into any details about the set-up yet as I'm in the early testing phase but right now I've connected the USB B port from my MBSEQ to the FH-1 and all is peachy! I can control my eurorack from my MBSEQ without any fuss. Once I've spent more time configuring the system I'll elaborate more as the Expert Sleepers FH-1's capabilities are very deep (up to 64 CV/GATE  outputs). 
  13. Using a 16x4 BLM, TPD and Aout_NG together

    I've tested all the parts individually and everything works correctly.  SEQ>Tx>Rx>DOUTX4 Works SEQ>Tx>Rx>BLM>TPD Works i'll spend some time in n it over the course of the next week and see if I have any further success. What I do need to do is interrupt the 5v power supply that is sent over the db25 cable and power the BLM & TPD with a local PSU. All these modules are drawing too much current from the SEQ causing the LCD displays to have virtually  no contrast. PM me adopt the LEDs, I might take you up on them. I've got the buttons and all the parts for the core. The LEDs might be enough to push me over the edge and buy the rest of the components.  
  14. Using a 16x4 BLM, TPD and Aout_NG together

    That is exactly what I thought but no dice!  What I really need to do is bite the bullet and build the 16x16 BLM I got from you a few years ago. 
  15. So I'm trying to use a 16X4 BLM and TPD with an AOUT_NG and having trouble getting the buttons and encoder working on the BLM and TPD I think I have my HW config file set-up correctly.  The way it's set up is a bit complicated so I'll explain that first. The modules are connected as follows. (I've omitted the AOUT_NG as it's working) Core>Wilba's FP>Line Driver Transmitter>Line Driver Reciver>DOUTX4>Line Driver Transmitter>Line Driver Reciver>16x4 BLM>TPD All of the LEDs and 7 segment displays work as they should, it's just the DIN side of things that isn't working.  Having read the documentation for the Line Transmitter it would seem that I need to connect pin 10 of the last 74HC165 on the front panel PCB to J2:SI on the first Line Transmitter PCB. Is this correct and if so does anyone know which IC on Wilba's PCB is the last 74HC165 in the chain?