Jump to content

tago

Members
  • Posts

    273
  • Joined

  • Last visited

Everything posted by tago

  1. Hi, i wonder how to test new displays for bad pixels. I have some standard 128x64 OLEDs and some character LCDs i'd like to test. My first idea was to enable/disable all pixels at once. Is this sufficient? If yes, which char displays all available pixels per char? Thank you!
  2. Hi, i built an AINSER8 Module on perfboard. When using it as the only module connected to the core the jitter seems reasonable. Now if i connect a CLCD (OLED/Winstar 40x2) to the core the great jittering begins. (7bit alternates +/- 1) Next i tested a standard 128x64 OLED which seems not to induce additional jitter. Has someone experienced something like this? Any ideas how to solve such issues? Thank you very much!
  3. Hi @FantomXR since i couldn't find the mentioned thread, could you please post a link or thread title? I'm currently deciding between NG vs KB for a masterkeyboard project. It looks like you can't have buttons and displays with KB, so i'm intrested in a fast(er) scanning NG version. Thank you very much!
  4. I need some help with my last two posts. Can anyone help? Thanks in advance! ps. Would opening a new thread per question be better for getting answers?
  5. I'm sort of in the same boat and started nonetheless, but haven't finished something yet. My main issue is having many hard/software related questions and a somewhat small Midibox community. I'm often in need of specific help that can't be found elsewhere. Btw thanks to all trying to help out us beginners!
  6. What serial register (select row) configuration is better? (1) Wilba DIO layout (http://www.ucapps.de/midibox_seq/mbseq_v4_dio_wilba_layout.pdf) uses the select row SR (M1..M8) for Btns and LEDs (at the same time?). (2) Duo LED matrix layout (http://ucapps.de/mbhp/button_duoled_matrix.pdf) has Btns and LEDs splitted with each their own select rows (DEFAULT_SRM_DOUT_CATHODES1 > D0-D3 to LEDs and > D4-D7 to Btns) I wonder why, if (1) is working as well. I want to place 32 LEDs and 32 Btns on each pcb. Should i go the 8x8 route (2) or a 4x8 based on (1)? I'd think (1) with a 4x8 matrix should be the best, right?
  7. I inspected the seq_blm8x8.c source and it seems if i'd limit seq_blm8x8_current_row to 4 i should have a 4x8 matrix. Can someone confirm this?
  8. Looking further into all the project files it seems to me that i have to copy/convert the 'Include Pathes' inside .cproject file to <IncludePath> inside .vcxproj file. Is this correct? Can someone who is using Visual Studio give me some hints how to migrate the project?
  9. As a start i imported svn.mios32 source files into VS, but get numerous include errors 'cannot open source file'. After adding some include directories to the project i could get rid of some of them, but i wonder if this is the best way. There must be a way to import references from the makefile, right?
  10. After a fresh Windows 10 and Visual Studio 2017 Community installation i'm trying to setup the toolchain again. Should i install the old MSYS-1.0.11.exe or a newer MSYS version via mingw-get installer? Or maybe minGW-w64? Which option i should chose? [1] MSYS-1.0.11.exe (old all in one installer) [2] msys-1.0.19-1 (to be installed via the newer mingw-get installer/package manager) [3] minGW-w64 (looks like an active project in contrast to minGW)
  11. I also consider 2x 74HC595 and 3x 74HC165 (1x BTN matrix and 2x for encoders) per PCB. May i ask which MBSEQ_HW.V4 (standard_v4, wilba, tk) you use for your two 8x8 matrices? Furthermore i can't figure out how easy it would be to setup two 4x8 matrices (should be enough for my design).
  12. Thanks for the warning. Would you get bleed mixing 2.0, 2.1 and 2.2 Vf LEDs or is this a save range? How does the bleeding works in a matrix? Can i mix colors per row/column (e. g. all on D0 are green and all on D1 are yellow)?
  13. Thanks @ilmenator I'm trying to figure out how easy it is to have two 4x8 matrices instead of one 8x8. I want two identical frontpanel PCBs (8 colums/steps each). standard_v4/MBSEQ_HW.V4 ################################################## # LED assignments to DOUT pins # SR = 0: LED disabled # SR = 1..16: directly forwarded to DOUT pin # SR = 17..24: forwarded to a 8x8 LED matrix ################################################## ... ################################################## # Button assignments to DIN pins # SR = 0: Button disabled # SR = 1..16: directly triggered from DIN pin # SR = 17..24: triggered from a 8x8 button matrix ################################################## If i'm correct, i can configure my own IN/OUT matrices per SR = 17..24. But i'm not sure about it. I'd like to know what 'forwarded to a 8x8 LED matrix' or 'triggered from a 8x8 button matrix' means? Which matrices, where can i set them up?
  14. Thank you! So you have two identical PCB sandwiches (2x2) for each side (8 columns per left/right side)? Each side has its own LED/BTN matrix?
  15. Hi @latigid on may i ask you if your left/right frontpanel pcbs are identical and how your BLM matrix setup works? I'm trying to do my own frontpanel and it may be the best to make it compatible to some others supported projects. Would be easier to maintain if a new SEQ version gets released and more beginner friendly. My idea was to cascade both (left/right) frontpanel pcbs like it is generally done in the Midibox system with DOUT/DIN/DIO modules. For my simple layout that would mean each frontpanel pcbs has one 4x8 BLM matrix. But it looks like SEQ does not support multiple 4x8 matrices in the MBSEQ_HW.V4 files out of the box. Thanks in advance! ps: i opened a thread:
  16. Looks like there are two matrices (in MBSEQ_HW.V4 files): BLM (Optional BLM Matrix) BLM8x8 (Additional 8x8 BLM as used for Wilba's Frontpanel) But i don't fully understand for what they are there. What means optional/additional? Could i use them both in parallel for my own purposes (BLM > left FP and BLM8x8 > right FP)? Maybe i should ask @latigid on how his matrix layout works? He seems to have two identical pcbs too.
  17. Thanks for your encouraging words Peter! What are low current LEDs in your book? For me the 2mA ones, as they are sometimes labeled like that. But those are very dim and would surely lead to brightness problems in a matrix. Regarding 8x8 matrix: that would lead to unfavorable wiring on two splitted frontpanel pcbs, right? Or would you put one 8x8 matrix on each pcb and connect only half of the matrix?
  18. NG seems to support 4x8 matrices http://www.ucapps.de/midibox_ng.html Since the idea was to have two identical frontpanel pcbs (left/right) it would be 4x8 matrices anyway. I'd like to know if i can do this in SEQ.
  19. I generally wonder why it's a 1/8th cycle in a 8x8 matrix for example. I'd think its 1/64th cycle. Edit: ok, i read more about matrices and it seems that only one axis cycles and the other works simlutaneously. That would mean a 4x8 matrix could be twice as bright as a 8x8 matrix, right?
  20. I unfortunately have only two LEDs per color laying around here, i'm not sure i can test this accurately with them. I encountered small brightness differences between the colors, as expected. Wilba's panel doesn't use drivers http://www.midibox.org/dokuwiki/doku.php?id=wilba_mb_seq_construction_guide Currently i have a 4x8 matrix per pcb for LEDs and the remaining 4 pins of the dout register for the button input matrix. One thing i saw in http://www.ucapps.de/midibox_seq/mbseq_v4_dio_wilba_layout.pdf is double use of a dout register (M1-8) for LEDs and BTN matrices. Would it be possible to do the same (using only 4 outs of a 8 out register and get slower cycle time for more brightness? Or would this be 1/8th anyway?
  21. I was planning to connect the LEDs directly to the shift registers like here: http://www.ucapps.de/midibox_seq/mbseq_v4_dio_wilba_layout.pdf Will this work?
  22. Thanks for the project list @latigid on The LEDs used for MB-LRE8X2 are red 20mA with 4.5mcd brightness, so it should be fine with around 8mcd LEDs. Did you see a LRE8x2 in person?
  23. Has nobody ever tried 10mA leds in a matrix? If yes, please share your findings. Thank you very much!
  24. Here is a draft. The idea is to reduce the button count on the side panel and leave out: fwd/rwd, pause/stop, solo, metronome, jog shuttle. I'd then have only play (stop), rec and live or loop (i'm not sure what rec/live/loop really are for)
  25. My first questions are LED related. I want to use different colored 10mA leds with 6-8 mcd and wonder if this is going to be too dark (4x8 matrix). Another point: What do you think of using 2 leds instead of one dual color led per step on the top row? (reason: dual color leds are harder to get and much brighter than standard leds / could look good on a frontpanel)
×
×
  • Create New...