pcbatterij

Thx Tk, I found a solution for the screen, for now. What I will do is: during the my PCB testing I will try to keep the SeqV4 UI as much as possible the same. Once I now that my PC design is OK, then I'll start to make a new UI (using a lot of your code :thumbsup: ) so far so good with my DIY project Cheers, Jef

Thx Tk, The display works fine, I kept the 10K resistor and only used the 1uF Caps though. But now I am a bit stuck by the following bit from the seq_lcd.c file: ///////////////////////////////////////////////////////////////////////////// // Local definitions ///////////////////////////////////////////////////////////////////////////// // can be overruled in mios32_config.h #ifndef LCD_NUM_DEVICES # define LCD_NUM_DEVICES 2 #endif #ifndef LCD_COLUMNS_PER_DEVICE # define LCD_COLUMNS_PER_DEVICE 40 #endif // shouldn't be overruled #define LCD_MAX_LINES 2 #define LCD_MAX_COLUMNS (LCD_NUM_DEVICES*LCD_COLUMNS_PER_DEVICE) When I change the LCD_MAX_LINES, I get an error when compiling the SeqV4 project. Could you point me in the good direction to be able to use the 8 lines of the 1 display instead of the 2 lines from several displays? Do I need to rewrite everything that's related to LCD or is there a way a round? cheers, Jef

Hey, Could anybody let me know if the ST7565 display is working with mios32? I have made a PCB with the toner transfer method using the schematic of PhileTaylor....but I got nothing on my screen. After looking through the wiki and the forum, I then put a new bootloader on my LPC17 board and changed the lcd_type to GLCD_DOG, with 128, Height 64, num_x 1, num_y 1. put SeqV4 back on the LPC17, but....nothing on the screen. I even compiled the tutorial 021_GLCD to test my display: nothing on the screen :angry: I don't know what I can do to make the ea dogm to work, it might be the display itself that is broken as there is a few diagonal lines of dark pixels on the screen?! cheers Jef

Hey Shuriken, Yeah I know, and I have even put the lcd_type to GLCD_DOG, but I get nothing out of my display. I actually hope it is my display that is just broken. it has a few strange lines across the display!? cheers, jef

thx tk

Hey, I have tried to compile SeqV4 and that didn't work because of an overflow. I then downloaded the other version of the CodeSourcery, using the link Philetaylor put in his msg. But there is still an overflow, at the end of trying to compile, I get: Creating object file for osc_client.c Creating object file for mini_cpp.cpp Creating object file for freertos_heap.cpp d:/mios32_tools/bin/../lib/gcc/arm-none-eabi/4.3.2/../../../../arm-none-eabi/bin /ld.exe: project_build/project.elf section ._usrstack will not fit in region RAM d:/mios32_tools/bin/../lib/gcc/arm-none-eabi/4.3.2/../../../../arm-none-eabi/bin /ld.exe: region RAM overflowed by 56 bytes collect2: ld returned 1 exit status make: *** [project_build/project.elf] Error 1 Does anybody know how I can fix this? Cheers Jef

Hey all, This is a newbie question: I am building a TR909 like sequencer using the LPC1769 core and I have a Electronic assembly display DOGM128X6. I have tested the display but I only get the backlight :cry: Could someone let me know if I need to change something on a software level to make the display work? do I need to put something in the MBSEQ_HW.V4 file? thanks Jef

I have sourced all the parts and will close the groupbuy at the beginning of next week. If you have put your name on the list and did not get a mail from me, please mail me at: jozef.samijn@telenet.be If you want to put your name on the list, please email me as soon as possible after you had a look at: http://users.telenet.be/MB909/guestbook/guestbook.html Kind regards Jozef

Hey all, I was wondering if it would be possible to supply the LPC17 board with 15V? can I take the risk or do I need to buy another transfo or build a voltage divider? cheers Jef

Hey all, I have sourced all of the components (except the pot meters and transfo), I have an estimation of the price, it will be around 320 euro's. depending on how many people enter the group order. This includes the Trevor Page boards PIC and PROM's and all the components needed to build the 9090 (except the pot meters and transfo). 34 X M5218AP MITSUBISHI DIP-8 2 X 4006B TEXAS INSTRUMENTS INTEGRATED CIRCUIT 2 X 2SD1469R ROHM SEMICONDUCTOR 2 X TL 074 DIL 1 X LM 2901 DIL 6 X MOS 40174 2 X MOS 4520 2 X 74HC 4051 30 X SA 1115 57 X SC 2603 2 X SC 2878 1 X CA 3080 DIP 3 X M74HC4040B1R 2 X TL074CN 3 X CD4011UBE 3 X CD4013BE 1 X HCF4070BEY 4 X CD4069UBE 3 X M74HC4040B1R and much, much more (resistors, caps, connectors, heatsinks, ....)

Kevin, Yes the 9090 boards will be included for everybody that wants them. I have contacted Trevor and he will send the boards to me, so I can send them onwards. Kind regards, Jef

Hey all, As there are still quite a few people starting to build the 9090, I would like to help out with organizing a possible groupbuy. If there are enough people (minimum 10) I could make a few big orders with the different suppliers and send you a complete package with all the components or just the rare parts. I am not doing this to make money at all, I just want to facilitate the new builders. So I will not advance money and will only send what is paid for. I have shared a spreadsheet, in that file you will also find a few columns concerning my sequencer part, don't worry about those columns as I have not yet finished the sequencer. That will be done at the end of December. If you are interested, please click on the spreadsheet link and add your username. Kind regards Jef

Phil, does this also apply for the dogm128 display? cheers Jef

I have built the 9090 boards and I am trying to make a 909 looking sequencer with the SeqV4. you can have a look at http://users.telenet.be/MB909/index.html cheers Jef

Freddy, I started with the power than did the bass drum and the midi section. As soon is I tested the bass and knew the midi and power worked, I then did a mix of soldering by component size and by section.

Yes I make my wood panel by hand, it is not perfect at all, but at least it gives me an idea that the frontpanel file fits the designed PCB cheers jef

I compare my KiCAD files with my frontpanel design. I also put loads of measurements both on my PCB design and frontpanel design and print them from time to time. I also make an MDF wood frontpanel(thin wood), this costs me a few Euro's, and that way I am sure that the frontpanel design fits the PCB. This also rules out stupid mistakes or things that I just forgot, misplaced,... cheers Jef

Freddy, thx for the reply. you can check my blog on: http://www.bloggen.be/mb9090/ I am also building a website because there are quit a few restrictions on the blogsite, check the website on: http://users.telenet.be/MB909/ The website is still under construction but I am updating as fast as I can. I can do this because I am still waiting for the parts from Mouser. I will start soldering the LPC board tomorrow with the parts that I got from Reichelt. The 9090 is working fine!!! I love the drum machine. I only have to replace one potmeter because this is the one that is causing a hum from time to time. I don't have a laser printer and the copies from the local copy center didn't work to make the PCB's for the sequencer. If you have any questions about the 9090 parts or making the boards, don't hesitate to contact me. you will love the 909 clone it kicks :rolleyes:

thx jojjelito, I was already afraid that I would need these expensive knobs :cry:

Hey, I have been looking around the forum if I could find an answer to my question, but I didn't find it yet... I have pot meters with a smooth plastic 6mm shaft. When I look on the mouser website, I only find knobs for 6mm D-shafts or 6mm knurled shafts. Do you know which knobs from mouser will fit my pot meters? thanks Jef