Sephult

Try only connecting one midi cable at a time for learning, I had problems with feedback in my MB64. -Sephult

YO again! OK so it must be a wiring problem, let me know what you find with the circuit wiring, when we get that solved then the LCD is the next step. Also check your configurations on MIDI-OX Thorsten suggested 2048*4 at 700ms after F7 delay, with delay set at zero. Also go to devices uncheck the attach midi in to midi out ports, open the midi out port in the top right cell and remove the midi input. This configuration seems to be the best for MIDI-OX. Good luck on troubleshooting! -Sephult

Hello Domas!!! You should try leaving your buffers under sysex/configure to 2048 * 4 @ 700ms delay after F7. The delay should also be at zero. Thorsten had suggested these as a possible standard, and they work great. Also go to the devices section and disable automatically attach inputs to outputs, go to the top right cell open the midi output and erase the input from the output. I myself had problems initially similar to this. I would check the midi ports and make shure they are connected properly first. Second I would test my voltages, let me know what voltages you are getting ( Especially at the LCD +5v :) I would initially disconnect the LCD to make shure this is not causing problems like it did in mine. -------------------------------------------------------------------- You can test this by removing the D7 and +5V line - in this case the LCD driver should get a timeout and ignore all following calls to MIOS_LCD_* Thanks Thorsten :) -------------------------------------------------------------------- Check all your connections (all of them making shure buttons and AIN are pulled up/down properly. If it seems to load the MIOS with the LCD disconnected check your LCD connections. If these are correct add a 100 ohm resistor at the LCD +5v. This helped stablize my system. When you load MIOS you should see 13 checksums. After loading MIOS it will restart and only send the verification string once. You can check and see if MIOS is working by send the string (F0 00 00 7E 40 00 0F F7) it should reply fairly fast. Also you can verify if MIOS is working by uploading the CRC application. Let me know what you find! -Sephult

Hi ilmenator!!! I would just run a multimeter to the pins and see if it grounds out :) As for the encoder problem have you tried switching the encoder out to see if it is bad? Did you solder the 15 bridges like Thorsten has on the DIN page at the bottom? (14 bridges on Smash's boards) How about the 10k -> 5v pull up coming off of the serial pin of the second shift register? Also does the pin have the appropriate 10k to 5v pull up for the encoder? Well let me know if you find any thing out!!! -Sephult

I have to add that my pinout for the LCD was not the same as the LCD jumpers on the core!! I would also double check these like kejace suggested. -Sephult

Hey Ello! Does the PIC send the (F0 00 00 7E 40 00 F7) string when you boot it up? I would try troubleshooting the PIC chip first in order to isolate problems. When the PIC is working properly I would move on to troubleshooting the LCD. Also for the LCD check the Contrast pot and make shure it is working properly. If it is bad it might already be on, but not visible. In order to bypass the LCD (Thorsten had suggested) ------------------------------------------------------------- Remove the D7 and +5V line - in this case the LCD driver should get a timeout and ignore all following calls to MIOS_LCD_* -------------------------------------------------------------------- I would check the PIC first, examine pinouts for incorrect wiring, and let me know what happens. Good Luck! -Sephult

Hello Smash!!!! Thanks for the boards, they are very nice!!!! I also have to say that they shipped really fast!! I am still in the soldering stage, and I only ran into a couple problems, although they are not really problems at all. I got a little confused about the 15 bridges that Thorsten's layout had, I noticed these were reduced to 14, and I believe that C4, polarity was not on the board, but it was easy to trace to the the negative side to the middle pin of 7805. I hope this information can help others who are having any problems. Besides that the boards were so self explanatory that anyone could put them together. Well I have to say that the boards are awesome!!!! Great job Smash, the parts list really came in handy too, you saved me alot of time. With the time I saved, I was able to get into the programming a little more with Thorsten before my project was due ;) Long Live DIY!!!! Thanks Smash! -Sephult

Hello :) Ok let me see if I can help you troubleshoot! I would try to upload different programs especially the AIN_DIN_DOUT. With the AIN_DIN_DOUT you should be able to test the DIN by just grounding a pin, see a midi message in MIDI-OX, and even check a DOUT if you are using one to verify that the shift registers are working properly. If this works you know the shift registers are wired correctly. Did you see the ready message after you uploaded MIOS? When you upload an application does it say Rebooting MIOS........? and send the startup string? I had a problem with my system restarting, and being unstable, you could also try the CRC program to test if your MIOS is having problems. This helped me to troubleshoot my own circuit. Thanks Thorsten!!!!! :) I would suggest trying the other apps out and jogging some info down, then let me know if you are still stuck Good Luck Ilmenator!!! :) -Sephult

Thorsten Suggested to me when I had a build problem: Check capitalization, it is case-sensitive. You could also check the User_vectors.inc and see if any of those symbols are even in the file. (Thats how I would troubleshoot, maybe a different case is shown) As for the AIN_DIN_DOUT, yes you should be able to see MIDI transmitted to the computer, but at this time it does not receive the MIDI. I had problems using Mpspasm :) to get the AIN_DIN_DOUT built, but the project file is included so MPLAB can open it rather than using spasm. Can you see the startup message on MIDI-OX when you boot up the PIC? Well I hope I can help :) Sephult

What are the differences between the two SID chips. I was looking through the MP3 on the SID page and noticed a couple new MP3 that showed both SIDs. I noticed that the 8560 had really kewl filters, is this possible with the 6581? -Sephult

Does anyone know how to add midi to the AIN_DIN_DOUT application? I have tried but no luck yet. -Sephult

Ok Well what I am trying to do is add MIDI input into the AIN_DIN_DOUT application. Does anyone know how to do this? I have tried to take the Notify Found event section from the J5_dout app and add it to the AIN_DIN_DOUT, but I keep getting errors about the MIOS_DOUT_Pinset function. It seems that it is undefined. Well if anyone could help I would appreciate it -Sephult

Hello All!!! I am on my journey to experiment with MIOS, and make a tutorial regarding to what I have learned. First of all I am still trying to understand how the code works. I understand the MIOS tables! I am unsure about how the vectors work though As for how they link up I am unsure, and the program flow I am starting to see. Anyone have any information that could help out? -Sephult

Definitely, The more help the merrier. We can get a massive DIY Tutorial going stryd. Thanks Thorsten!

Hey I already started this posting!!!! :) Well I was just wondering for the possibilites to change the baudrate in the software. Then if you can just bypass the optocoupler, you could have switchable interfacing. I am aware however that both baudrates are different, it would be cool however to have both com and midi, but definitely seems like a *8*8' n shitload of work. I bet Thorsten could pull it out nowhere on us. :) Sephult

Ha, Well just use the LTC its the same thing without moving all those bits. I was just wondering if anyone had used both at the same time in a setup, I am interested in trying it out. Thanks for the humor, I needed it. -Sephult :)

Have you tested the button? Maybe it isn't working. :) -Sephult

Hello! I am looking for information regarding the MIOS tables. I am wanting to convert my 8 DIN to be controlled by note on/off messages rather than controllers. I am taking this message in the MIOS tables file to be the section I am looking for 128 buttons and LEDs assigned to MIDI events "B0 00 <value>" to "B0 7F <value>" Is this correct. If so is there a list of strings that correspond to the values? If not I will try to compile one.\ Thanks -Sephult

Hello ToFic!!! I went to see your photos but they did not show up! I am unsure of what to do without looking at your board. First thing: Check Pins 15-18 and make shure wiring is correct. Check wiring on your 4051's Check your potentiometers to make shure they are working Send me a picture and I might be able to help you out some more. Is anything else acting funny?

Hello All! I have been looking over your conversation, and I see that everyone is interested in utilizing infra-red. As for the Grid Idea: Roland MC-505/ MC-909 D-beams allow control of controller value, and note on/off messages. So making a grid like you said to have a piano roll would depend on the amount of notes that you would need to trigger. As for the input for the infra-red and its actual values. I believe that an op-amp would be the easiest method of getting the values to 5v. I am unsure what to do for the lower end of the spectrum however. Well Good luck guys, I will look around and see If I can find any info to help out. I am interested in seeing some infra-red boxes in the gallery. -Sephult

Hello Jeroddumas. As for the pins I believe that: 1 11 12 13 14 31 32 Need hooked up like you said & * (6 to 1kohm to 5v) (to tell if bankstick is there or not) (18 to 10k to 5v)(If AIN not used?) (20 to 10k to 5v)(for the DIN, not & used) (2-5, 7-10 ground) (If AIN not used) * I believe this is all that you need hooked up besides the MIDI pins 25 and 26, I am unsure if you need to hook these up yet to see if the PIC is running. These pins are the ones that I had and along with the MIDI and it works! Good luck -Sephult

Hello LO! I was wondering if there was any problems with just using a switch at pin #6 to bypass the optocoupler. I want to do this so that I am able to choose whether I can run with MIOS on a COM port or be able to direct connect to my outboard gear with MIDI. The main reason is that I need to control my project from a laptop that doesn't have a 15pin Joystick port. However, it does have a COM port :)

I do the same, with and Exacto knife to break the seal. Then I put a little leverage on both sides with a small flat tip screwdriver, or a dental tool.

Awesome- At least it didn't take much time, I was thinking it was the burn also. Have fun! ;) -Sephult

Does anyone know what to do to use the LTC. I see that j11 of the core is the connection, and I know the optocoupler must not be stuffed. Has anyone tried the possibility of switching between the LTC and regular midi inputs? Does anyone think it is possible to just bypass the optocoupler by using a switch at pin #6 ? _sephult