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Lamouette

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Posts posted by Lamouette

  3. WTB : MB 6582 WINDOW

    in Fleamarket

    Posted

    On 13/01/2020 at 3:20 AM, dwestbury said:

    Hello everyone... Almost done with my first ever MB-6582 build... Been working on it intermittently for an embarrassingly long time, but finally in the home stretch. Wondering if anyone knows where I could get this LCD window part? https://youtu.be/WIup9BhivuY (the part makes it's first appearance @ 1:35)

    edit: perhaps @kHz-tone could advise?

    Cheers!

     

    Hello, i have still one in a box, not sure if it is the good one for hole dimensions : 82,5x31, is it the good one ?

    • Like 1

  5. SEQV4 : Adding leds to gate out

    in Testing/Troubleshooting

    Posted · Edited by Lamouette

    Ok, all is working like it should be i haven't connected everything yet.

    One questions.

    I use a TPD and the CV/GATE/CLOCK/TRIGGER side by side.

    TPD is connected and powered by the SEQ PSU, which is a PSU with no connection to ground. (i will have to connect the CORE_STM32F4 ground to it)

    I use my eurorack power supply to power the AOUT_NG, Only the +12V/GND/-12V

    If i understand correctly, on the AOUT, the GND will be different from 5V and +12/-12V.

     

    Can it be a source of problems like ground loops ?

    Is there a problem about removing the +5V and GND from the J1 connector on the AOUT_NG and power it with the eurorack PSU ?

     

    By writing this expect another problem, GATE/CLOCK/TRIGGER, come from a DOUT, which have is proper ground so anywat i will get a ground loop ?

     

    Thanks for your asnwer !

    EDIT : (another thinking)

    I have a SEQV4 PSU which provide +12/-12V so i can power everything from it, but, same problem, i will have ground loops between my eurorack PSU,adn the SEQ PSU, when i will connect a jack between CV/GATE/CLOCK/TRIGGER jack's and an input of my modular ?

     

  6. SEQV4 : Adding leds to gate out

    in Testing/Troubleshooting

    Posted

    Thanks for your answer ! I resolved my problems, and it is now working, but i don't understand what i did, led was always lit, i shuted down, and re power on my SEQ, and it was working perfectly ? Really strange behavior.

     

    But it was really interresting to test it. i realise how i loved to build kits, but how it is bad to build something you don't understand.

    I read a lot yesterday about simple components, and decided to buy a book to learn deeply what i am doing, i suppose this is the next DIY step. but after 4 years, i really need to understand. i also realise how, i hated the electricity at the school, and haven't remembered anything !

     

    So i restart from nothing, and i feel happy to learn htings !

    Sorry for the philosophical post.

    To explain, i have a DOUT on a seperate PCB, i will build the gates led on a separate breadboard, and attach it on the back of my eurorack panel, with the AOUT _NG, and the TPD.

     

  7. SEQV4 : Adding leds to gate out

    in Testing/Troubleshooting

    Posted

    Hi,

    I continue here to get about my problems.

    So, i made a separate eurorack panel with a TPD, and the CV outputs ( CV/Gate, / clocks / triggers)

    I want to add leds for the gate outputs.

    I checked some schematics about how it is done. (Especialy Hexinverter midi2cv, Yusynth, and Altitude euro Aout here on midibox)

    i understand how it works, but i am not able to get it working.

    Some data :

    Gate Voltage mesured : 4.8V

    Leds : 20mA 1.85V ( so 470R resistor)

    Transistor : 2N3904

     

    If i understand this is a NPN, so closed by default, and it will opens only when a bit of current is flowing, (current provided by the gate)

     

    But the led is always lit.

     

    Should i ad a resistor between to leg to create a kind of fake load ?

     

     

  8. Aout Euro - Prototype 1

    in Design Concepts

    Posted

    Don't want to hijack the thread, but i tried the schema, with the good value for my leds, but impossible to get it working.

    i have 4.8V at the gate output, and used 470R resistor for my led.

    The datasheet for the BC547 say : Emitter-Base Voltage 6V, is my gate voltage to low to open it ?

  10. Aout Euro - Prototype 1

    in Design Concepts

    Posted

    Hello, altitude, i am on the way to add leds to my gate outputs.

    Are you using BC547 as transistor ?

    i try to understand how it works, i checked shematics of the midi2CV of hexinverter, some yusynths pcbs, and yours , you all use a transistor, but no one use the same way to accomplish this (maybe it is the basics, sorry if it is THE noob question).

     

  13. My SEQV4 - Finished electronics !!!

    in MIDIbox SEQ

    Posted

    Thanks a lot Hawkeye, you have been a really great helper !

     

    Now i have to work the case, but that should be easier for me.

     

    I will keep my thread updated, it could be a great help for someone like me who strart from nothing !

     

    And finnaly it is funny as the first pcb i ever solderd (a DOUT), is the last i added to my build ! it was fun to check my first solder :)

  16. My SEQV4 - Finished electronics !!!

    in MIDIbox SEQ

    Posted · Edited by Lamouette

    I trided to modifiy the shift register number, but it is not working :

    As the TPD in normal connection, is connected to 5 6 7 8 9 10, i suppose the shift register 1 2 3 4 already used by the wilba panel. (1&2 by wilba BLM, and 3&4 by BPM digit)

    I tried to put the TPD at the end of the chain, to avoid problems, so :

    Original config : 

    # See also http://www.midibox.org/dokuwiki/doku.php?id=tpd_pcb
##################################################

# set to 1 or 2 to enable the relative track position display
# 0: TPD disabled
# 1: TPD enabled - columns are cathodes, rows are anodes
# 2: TPD enabled - columns are anodes, rows are cathodes
TPD_ENABLED 2

# define the DOUT shift register to which the columns are connected (0=disabled)
TPD_COLUMNS_SR_L 10

# for a 16x16 TPD: define the SR to which the right columns are connected (0=disabled, use only 8x8 TPD)
TPD_COLUMNS_SR_R 7

# define the DOUT shift register to which the green LED rows are connected (0=disabled)
TPD_ROWS_SR_GREEN_L 8

# define the DOUT shift register to which the right green LED rows are connected (0=disabled, use only 8x8 TPD)
TPD_ROWS_SR_GREEN_R 5

# define the DOUT shift register to which the red LED rows are connected (0=disabled)
TPD_ROWS_SR_RED_L 9

# define the DOUT shift register to which the right red LED rows are connected (0=disabled, use only 8x8 TPD)
TPD_ROWS_SR_RED_R 6


##################################################
# CV and Gate/Trigger/Sync Setup
##################################################

# AOUT interface now selected in CV Configuration Menu and stored in MBSEQ_GC.V4 file
# please scroll through the menu to find this page!

# the 8 CV gates can be assigned to a shift register (0=off, 1-32: number of shift register):
# - 1st CV Gate available at DOUT SR output D7
# - 2nd CV Gate available at DOUT SR output D6
# - 3rd CV Gate available at DOUT SR output D5
# - ...
# - 8th CV Gate available at DOUT SR output D0
CV_GATE_SR1   0

# and DIN Clock Outputs can be assigned to a shift register as well (0=off, 1-32: number of shift register):
# D7..D0 will output individual clock or start/stop signals which can be configured in the CV configuration page
CLK_SR        0

# additional gate triggers are available on common digital output pins of the
# DOUT shift register chain - they are assigned to AOUT channel #16 (Note C-1, C#1, D-1, ...)
# define the shift registers which should be used here (each provides 8 gates)
# Note that SRs assigned to this function cannot be used as LED outputs (exclusive function)
# Allowed values: 1-32, 0 disables the function, all other values invalid and not allowed
DOUT_GATE_SR1   0
DOUT_GATE_SR2   0
DOUT_GATE_SR3   0
DOUT_GATE_SR4   0
DOUT_GATE_SR5   0
DOUT_GATE_SR6   0
DOUT_GATE_SR7   0
DOUT_GATE_SR8   0

# if set to 1, the additional DOUT "gates" will send 1mS pulses
# useful for analog drums
DOUT_1MS_TRIGGER 0

    Modified config : 

    # set to 1 or 2 to enable the relative track position display
# 0: TPD disabled
# 1: TPD enabled - columns are cathodes, rows are anodes
# 2: TPD enabled - columns are anodes, rows are cathodes
TPD_ENABLED 2

# define the DOUT shift register to which the columns are connected (0=disabled)
TPD_COLUMNS_SR_L 14

# for a 16x16 TPD: define the SR to which the right columns are connected (0=disabled, use only 8x8 TPD)
TPD_COLUMNS_SR_R 11

# define the DOUT shift register to which the green LED rows are connected (0=disabled)
TPD_ROWS_SR_GREEN_L 12

# define the DOUT shift register to which the right green LED rows are connected (0=disabled, use only 8x8 TPD)
TPD_ROWS_SR_GREEN_R 9

# define the DOUT shift register to which the red LED rows are connected (0=disabled)
TPD_ROWS_SR_RED_L 13

# define the DOUT shift register to which the right red LED rows are connected (0=disabled, use only 8x8 TPD)
TPD_ROWS_SR_RED_R 10


##################################################
# CV and Gate/Trigger/Sync Setup
##################################################

# AOUT interface now selected in CV Configuration Menu and stored in MBSEQ_GC.V4 file
# please scroll through the menu to find this page!

# the 8 CV gates can be assigned to a shift register (0=off, 1-32: number of shift register):
# - 1st CV Gate available at DOUT SR output D7
# - 2nd CV Gate available at DOUT SR output D6
# - 3rd CV Gate available at DOUT SR output D5
# - ...
# - 8th CV Gate available at DOUT SR output D0
CV_GATE_SR1   5

# and DIN Clock Outputs can be assigned to a shift register as well (0=off, 1-32: number of shift register):
# D7..D0 will output individual clock or start/stop signals which can be configured in the CV configuration page
CLK_SR        6

# additional gate triggers are available on common digital output pins of the
# DOUT shift register chain - they are assigned to AOUT channel #16 (Note C-1, C#1, D-1, ...)
# define the shift registers which should be used here (each provides 8 gates)
# Note that SRs assigned to this function cannot be used as LED outputs (exclusive function)
# Allowed values: 1-32, 0 disables the function, all other values invalid and not allowed
DOUT_GATE_SR1   7
DOUT_GATE_SR2   8
DOUT_GATE_SR3   0
DOUT_GATE_SR4   0
DOUT_GATE_SR5   0
DOUT_GATE_SR6   0
DOUT_GATE_SR7   0
DOUT_GATE_SR8   0

# if set to 1, the additional DOUT "gates" will send 1mS pulses
# useful for analog drums
DOUT_1MS_TRIGGER 0

    But i got nothing on the TPD... Any thoughts ?

    The TPD have 9 Shift register but i can only see 6 assigned on the MBSEQ_HW.V4

  17. My SEQV4 - Finished electronics !!!

    in MIDIbox SEQ

    Posted · Edited by Lamouette

    Hi there, some news on my side !

    I have now installed a proper ubuntu on a disk partition, and could do some make files without any problems, i really enjoy this OS, so well done on your side guyz :innocent:

     

    For my SEQV4 :

    SEQ is working

    2 Quad-IIC working

    Line driver working

    Aout_NG working

    TPD Working

    :love:

    So it is a long road i did, and i am close to the end of the project ! Thanks a lot for you awesome help, and you really friendly behavior ! I learned a lot about different things, i am now a proud soldereing guy, but i know i have lack of electronic and programming knowledge ! Also, speaking in english everytimes here helped me a lot to improve my language ! :cheers:

    But the road is not ended yet !

    I want to use the line driver to make a separate eurorack module, which would include, a TPD, the AOUT_NG for the cv, and 1 or 2 DOUT for the gate/trigger/clocks.

    Here is my question, i read about problem with the TPD not at the end of the DOUT chain.

    It is not a problem to connect 1 or 2 DOUT on J2 of the LINE DRIVER RECEIVER, and plug the TPD at his end ? (if i assign the correct Shift rehister number) ?

  19. MB-LRE8x2CS : Give one partially working / WTB one Naked PCB

    in Fleamarket

    Posted · Edited by Lamouette

    Hello there,

    I have one MB-LRE8x2CS PCB version 2.5 to give.

    all the ledrings works as expected but the number 9, i tried to troubleshoot it, but i cannot put the finger on what's wrong with it.

    i will keep the ICs, and knobs.

    2 Condition :

    1) i just want to be sure i cannot found a replacement one so i will not give it once i have another one.

    2)You pay the shipping, i live in Canada, so north america will be cheaper for you !

    DSCN3747.thumb.JPG.be6cd73780abfddac252d

    DSCN3749.thumb.JPG.360b8c9f23d1eb6f2c98f

  20. MB-LRE8x2CS need your help for something

    in MIDIbox User Projects

    Posted · Edited by Lamouette

    yes, i had understoood this, thanks for the explain.

    and yes, i am pretty sure this is a scratch problem with the soldermask....

     

    Evrytime the 16th of the faulting ledring is lit.i removed the coper all around, but it is still the same

     

    if i turn the encoder until the 16led normally lit, all the other led have a really little brightness, once i pass the 15th , the 16th stop working and no other one is lighting

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