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jbdiver

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Everything posted by jbdiver

  1. Absolutely. Maybe I should see if there is a wiki page or something I can use to post all the documentation and files. I created these boards using PCBExpress which was probably a mistake in terms of portability. I'm happy to share these files. Otherwise, it should be pretty easy to recreate the design using the design tool of your choice. That board looks really nice. It's interesting to see a different approach to this solution. I considered building a board to sandwich with the aout_ng, but figured the learning curve and time investment would be too high. I built my second little board yesterday. This board is sort of trivial, but I figured it would make the wiring behind the eurorack panel a little cleaner. The board simply connects the db25 pins to wiring headers in a logical organization. The physical board is a little big because I had to use a standardized size for cost savings. I can always cut off the excess material if necessary. I'm finally in a position to start building some cables to connect power and the aout_ng data connections. Once I test everything (cross fingers) I can order the panel.
  2. I created a cardboard mockup of the eurorack panel to check cable spacing and board placement. I think this 8HP design will work. The cable spacing is tight but certainly workable. This panel won't be skiff friendly because of the way I plan to mount the circuit boards behind the panel. That's not an issue for me.
  3. A couple more updates today. I created a little board to take the db25 serial input coming from the midibox seq4 and expose the inputs as headers for easy wiring behind the eurorack panel. This board seems a little trivial, but it will make mounting the aout_ng board to the eurorack panel a little easier. I plan to use the db25 serial interface as a key mounting point to the panel. Hopefully this is strong enough. I also created a eurorack panel design using Front Panel Designer. It's an 8HP panel with the boards mounted on the left-hand side. I plan to use mattson modular jacks. I'll hand solder connectors to all the jacks and plug them into header pins on the serial input board. My only concern is the spacing between the db25 input and the CV5-8 jacks. I created an engraving outline to show the size of the serial cable connector. It's pretty tight, but I think there's enough space to still access those jacks. I appreciate any feedback!
  4. Quick update on this topic. I received the finished boards last week and added the components. Everything seems to check out okay so far. I haven't added the aout module yet, but I've tested the gate functionality. Thanks for the help on this part of the project. I have two extra boards if anyone is interested in one for their midibox seq4. I would just sell them at cost+postage. The next step is to create the connector board for the eurorack module. I've attached two pictures showing the circuit board and the board populated with components.
  5. I made the changes you suggested NorthernLightX. Thank you for your guidance. I fixed a couple little trace issues and tightened up the board layout a little bit so that it is smaller. The current board size is based on the pcbexpress miniboard service (3.8x2.5in), so that's why the board has unused space. I reconfigured the connections to the capacitors. Hopefully those are connected properly. I've wondered about the open connections on U2 pins 11-16. It's not clear to me if those need to be connected to anything.
  6. Okay, I've reconfigured the board so that all the traces are on one layer. I also increased the size of the traces to 20 mil. I don't plan to try etching my own board, but hopefully this design is more DIY friendly if someone else wants to go this route.
  7. I created a little board to connect my core32 midibox seq4 to an external breakout panel containing an AOUT module. The board is based on a design created by smokestackproductions. I've never created a board before and I'm hoping someone can take a look at it and let me know if there are any omissions or mistakes. I plan to create a second board which will sit behind a eurorack panel and connect the 25-pin connector, AOUT module, eurorack power, and panel jacks.
  8. Possible solutions: 1. Lock mbseq in a room which is inaccessible to kid. 2. Remove memory card after each recording session and put in locked box or secret hiding spot. 3. Make the delete session process deliberate so that a kid can't just randomly push buttons and accidentally delete something. For example, the user would need to push a certain button sequence or spell out the word "yes" to confirm deletion 4. Require a password entry in order to delete sessions.
  9. Wow, pretty impressive. I already have a seq4 using wilba's board. Could something like this be built into a separate case as an accessory connected via serial cable? I can understand using the BLM to control gates or triggers for drums. How else do you use it? Do you map buttons to internal patterns and sequences? Or is more like a controller for a DAW?
  10. I'm confused on the behavior of mixer maps. Is a mixer map part of a session or separate? If I change the settings on mixer map #1 and then cycle the power on my mbseq4 the mixer map settings are gone, yet all of the other session settings and events seem to remain. If I save the mixer map #1 and then power cycle the mbseq4 then the mixer map settings are restored. Also, when I change the settings on mixer map #1 page 3 (program change), those settings appear on mixer map #2, #3, etc. If I change the setting back on mixer map #2 it affects the corresponding value on mixer map #1. That seems odd to me. Is there some relationship between these mixer maps that I'm not understanding? I'm using 4.063.
  11. Okay, I didn't realize there was a default entry for the remix feature in the config file. Problem solved!
  12. I'm seeing the same behavior. I updated to 4.060 and edited the MBSEQ_HQ file to assign the BUTTON_PATTERN_RMX function to one of the F1-4 buttons on my wilba panel. I can't seem to access this function with any of the F1-4 buttons. I am able to access other functions just fine with all of these buttons. That suggests it is not a hardware issue. Perhaps I'm not understanding the remix feature. I'm pushing the button assigned to the remix function after the seq4 starts. Any thoughts??? # SR Pin BUTTON_BOOKMARK 19 3 BUTTON_PAR_LAYER_SEL 18 2 BUTTON_TRG_LAYER_SEL 18 3 BUTTON_PATTERN_RMX 17 2
  13. I've got a sammichSID running v2.0RC37 firmware (MIOS v1.9g). I'm trying to update it to the latest firmware using MIOS Studio 2.2.3. Anytime I try to query the device via using MIOS Studio, it reboots. I can play the synth just fine using my midi keyboard or the virtual keyboard in MIOS Studio. I was able to install 2.0RC37 when I initially built the box. But now, when I attempt to upgrade it, the box reboots. Any thoughts?
  14. I was trying to find a jog wheel for my mb-seq4 and wasn't finding anything I liked. I'm using wilba's front panel board. I found a jog wheel that fits the encoder on this board perfectly. It's the jog wheel from an Akai MPC1000 and it was pretty easy to find from parts suppliers online (around $6 USD). You can get them in silver or black. I just thought I would share in case anyone else was looking.
  15. Check out this kit. It seems like it might work. It looks a little big but the price is relatively cheap: http://www.electronickitsbychaneyelectronics.com/TRIPLE-OUTPUT-DC-POWER-SUPPLY-KIT/productinfo/C6895/
  16. I think I had the opposite experience. I've tried it with the jumper in and out. I didn't damage the LCD either way. I think the jumper is out now. The LCD looks acceptable to me.
  17. I found a similar version of this power supply in the US -- Elpac WM113. Unfortunately it is no longer produced and doesn't seem to be available anywhere. I spent four hours searching for a suitable power supply. Unfortunately almost everything with those specs is a switching PSU which TK noted isn't good for analog. I did find a couple power supplies which look like they might work. I don't think these are switching power supplies. http://www.alliedelec.com/search/productdetail.aspx?SKU=8001801 This one is twice as expensive: http://www.newark.com/sola-hevi-duty/slt12-20404-12t/power-supply-linear-5v-10w/dp/93K6609
  18. I've got my seq4 running on a wall power supply today. I built an aout_ng board and would like to integrate it with the core32. My understanding is that I need to change the power supply to one that supports three voltages: +5V, +12V, and -12V. I'm looking for recommendations for a power supply which will meet the requirements. I'm based in the US. Here's one I found on Jameco: http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_88402_-1 Would this one work?
  19. I'm using beta42 and noticed a UI issue related to the transpose feature. Select Menu -> Transpose. When the >Octave:+0< is selected I can rotate the data wheel clockwise to increase the octave value but I cannot rotate the wheel counter-clockwise below 0. Also, if I use the data wheel to increase the value past +7 the value jumps to a -octave value. The same behavior happens when using the up and down arrow buttons. I noticed similar strange behavior when modifying the semitone values. In this case, I couldn't use the data wheel or arrow keys to select a -1 semitone value. If I selected the -1 semitone value using the general button and then turned the data wheel clockwise the semitone value would change from -1 to -2... odd.
  20. I'll volunteer to help out but I don't know who I would talk to about it. I've built 3 projects now. Financing this sort of project is no problem for me. I'd buy boards tomorrow for people if I understood the process.
  21. Are these panels for a rackmount config? I'm planning to get in on the desktop buy and need to source a front panel. thanks
  22. I just built my sammichFM over the past weekend. Great project!
  23. I've had a couple inquires, but the parts are still available. A couple people have asked me about shipping to Europe. The parts don't weigh much so I expect shipping to be around $15USD. Also the encoders were the ones sold by SmashTV: http://www.midibox.org/dokuwiki/doku.php?id=encoders
  24. Price decrease. This is a great deal for someone building a box. New components still in original sealed packaging.
  25. I bought a bunch of parts from SmashTV a year ago intending to build a MB-SEQ v3 box but with two babies at home I don't see myself tackling this kind of project for a long time. So I figured someone might want to buy the parts at a discount. All parts are new, never used, still in original packaging. My preference is to sell all the parts to one person. And I prefer to ship to the U.S. Here is the parts list with quantities: (1) Core Kit with PIC18F4620 (3) DIN kits (1) DOUT kit (1) IIC MIDI kit (18) Encoders (8) 24LC12 memory banksticks I also have two 2x40 LCD modules (Tianma Microelectronics -- TM402CBFW6) that I bought separately. I bought all these for around $170. I will offer these parts for $95 (USA shipping included).
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