Search the Community

Showing results for tags 'cv/gate'.

  • Search By Tags

    Type tags separated by commas.
  • Search By Author

Found 6 results

  1. midiphy Eurorack Expander Modules

    Hello, Peter made an awesome video (4k quality!) demonstrating the assembly of the following modules Euroceiver (line driver receiver in the rack), power distribution A1 Expander (AOUT based on MAX5500) D1 Expander (DOUTX1 for gates plus protection) D2/D3 Expanders (likewise for clocks and triggers) Feel free to use this thread for any discussion or troubleshooting. Have fun building your modules!     
  2. SEQ V4 Line driver break out CV

    Hi Midiboxers, Line driver breakout CV /gates finished i used AOUT and a tweeked DOUTx4 and of course the line driver receiver! DOUTx4 is stuffed with regular 220 ohm resistors for leds indicators and UDN2981 for gate booster. UDN 2981 are directly linked at the outputs of 74hc595 (before the 220ohm resistors) . the gates assigned to CV have two UDN 2981 (input in parallel)  one is powered by 5V (eurorack 5V gates) and go to minijacks and the second is powered by 12V and go to 1/4jacks (oldschool 12V modular gates) same for the extra drum triggers gates:  8 are in 12V and the last 8 are in 5V... need 1k resistor at each outputs of UDN for ground short protection !!!! 3 PSU inside:  12V  for 12V gates, 5V one for the 5V gates /line driver receiver/DOUT/AOUT and bipolar 12V for AOUT. the 5V line from the seq is cut on the receiver. i could have used the same 12V from bipolar but a dedicated 12v make sense cause wanted the AOUT "stability" as usual i've got a  bug :  the CV 1 and 2 have the same problem:  at calibration voltage are divided by 2... don't know why...not the ICs , no shorts, ( problem on the 2 first channel!) all other 6 channel working properly. the calibration "max" voltage is 4V on this two channel is it possible to be a log error? i build AOUT because i've got max525 in stock...  is someone use this config and could confirm that line driver work with AOUT?  
  3. Hi,   My name is Ruben (from holland) and i'm completely new to the forum. I've just finished my first midibox seq v4 with wilba's panel. So far it's all working. But I'd really like to use 8xCV and 8xGATE.   I have built my unit using te LPC17 and the AOUT_NG and as i understand it, i also need the DOUT for the gates.   questions:   1) is this the schematic i want for setting up the 8 gates? http://ucapps.de/mbhp/mbhp_doutx1.pdf Or can i wire the gates somehow directly to the core board?   2) i also need some help under standing what i need to change in MBSEQ_HW.V4, could somebody tell me exactly what needs to be in the part copied under here, to get 8 cv' and 8 gates working? the AOUT_NG page states the following:    "First edit the config file on the SD Card to use the AOUT_NG (i.e. #define AOUT_INTERFACE_TYPE 3) and save it !"   But if there's a hashtag before define then the whole line is commented out right? so should i strip the #define? if so, then why is it there?   This is the CV part copied from the .V4 file, could someone help me?   Cheers,   Ruben       ################################################## # CV and Gate/Trigger/Sync Setup ##################################################   # AOUT interface now selected in CV Configuration Menu and stored in MBSEQ_CV.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 DOUT "gates" will send 1mS pulses # useful for analog drums DOUT_1MS_TRIGGER 0   # should J5A/B/C outputs be enabled (0: no, 1: yes, 2: yes, but in open drain mode)? #  - the 6 first AOUT gates will be forwarded to J5A/B #  - the remaining last 2 AOUT gates are available at J5C.A10 and J5C.A11 (LPC17: J28.WS and J28.MCLK) #  - DIN sync clock will be forwarded to J5C:A0 (LPC17: J28.SDA) #  - DIN sync start/stop will be forwarded to J5C:A1 (LPC17: J28.SC) #  - if open drain mode enabled (option 2), external pull-ups have to be connected to J5 pins #    (advantage: pin levels can be pulled to 5V) # # NEVER USE THIS TOGETHER WITH ANALOG POTS - IT WILL CAUSE A SHORT CIRCUIT! J5_ENABLED 1
  4. MBHP Control Volt V1

    From the album Antix MidiBox SID

    Almost finished
  5. MBHP Control Volt V1

    From the album Antix MidiBox SID

    Probably a better focus