Apologies for spam; we've changed our policy by requiring approval for accounts, and deleted all existing spam and user - thanks for your help flagging content. We continue to test our forums and Vanilla software, aiming for release early in 2013. If you need to give us feedback outside the forum, contact us via http://createdigitalmusic.com/contact/ or on Facebook
dual meeblip micro
  • andrew.harperandrew.harper
    I am working on a new design for having to micro in one box i will be running 1 volume pot dual gang 10k log which i guess is right also decided to use small rocker switches i decided to use for the shift knob leds which will come on when the switch is on here a template so farthis just the print text so far it maybe orange perspex or i may go for the apple look white .. here whats been done so far the its still need to be lined up ..
    http://i1243.photobucket.com/albums/gg543/01012k7/MeeBlip/dualMeeblipmicro.jpg
  • andrew.harperandrew.harper
    will have to click on it to get full lay out :)
  • andrew.harperandrew.harper
    ok being working on a few options today i am using a vinyl transparent i am using a white project box sould i go for the apple mac look do one of the over options
    http://i1243.photobucket.com/albums/gg543/01012k7/MeeBlip/IMAG0384.jpg here is one with some tinted orange acrylic here one with the film applyed or here one with http://i1243.photobucket.com/albums/gg543/01012k7/MeeBlip/IMAG0382.jpg
    clear 1.5 mm polycarbonate any input please ...
  • meeblipmeeblip
    I like the clear version best. ;)
  • andrew.harperandrew.harper
    yes thats the one i went for its a bit like apple stuff to me but i had macs lol
    just waiting on some of the parts now i took the old micro apart last night
  • andrew.harperandrew.harper
    ok i got a few questions to ask, on the Digital section can i connect one wire to the GND and then connect the GND in a daisy chain to all the switches then connect the SW on the board to each of the switches ???

    on the analog side pots can i connect the GND in a daisy chain each of the pots and do the same with the +5v side to then connect wiper 1 to 8 to each of the pots ..( 8 wires)
  • meeblipmeeblip
    Yes, correct. :)
  • andrew.harperandrew.harper
    thxs james and for your help with bits here a case layout just switches and pots [IMG]http://i1243.photobucket.com/albums/gg543/01012k7/MeeBlip/IMAG0389b.jpg[/IMG]
  • greybeargreybear
    It's a very nice work. Any info about front panel? More photos?
  • andrew.harperandrew.harper
    the box is a MULTICOMP AB910W http://i1243.photobucket.com/albums/gg543/01012k7/MeeBlip/IMAG0388b.jpg

    http://i1243.photobucket.com/albums/gg543/01012k7/MeeBlip/IMAG0389b.jpg i am using Transparen?t Laser Printable Self Adhesive Vinyl ( can get inkjet Printable Self Adhesive Vinyl) From EBAY also got all parts like pots and switches from rapid in the uk you will also see i have led holes above (amp attack,amp decay,filter attack,filter decay) they will light up . when in shift knob mode ..
  • andrew.harperandrew.harper
    question power ok using a 9v 500ma dc power supply i will be running 2 meeblip micro also adding extra 8 leds which will not be connected to the micro they will run of the adaptor its self ..here on line calculator i used is this correct using Kingbright L-7104HD-5v 3mm Red LED 3mcd Solution 0: 4 x 1 array uses 4 LEDs exactly

    +9V
    R = 390 ohms


    The wizard says: In solution 0:•each 390 ohm resistor dissipates 3.51 mW
    •the wizard thinks 1/4W resistors are fine for your application
    •together, all resistors dissipate 3.51 mW
    •together, the diodes dissipate 24 mW
    •total power dissipated by the array is 27.51 mW
    •the array draws current of 3 mA from the source.
  • greybeargreybear
    The resistor can be calculate with this formula:

    R = (Vcc - V_led) / I_led

    the power dissipated by resistor is:

    W = R * I_led^2

    From datasheet I can see that I drive the led with 5mA the necessary voltage is 2Volt (or viceversa) so I can do the calculation:

    V_led = 2volt * 4 = 8volt

    R = (9volt - 8volt) / 0.005A = 200 ohm
    W = 200ohm * 0.005A * 0.005mA = 0.005W = 5mW

    You can use a standard value of 220 ohm. It's OK
  • andrew.harperandrew.harper
    thxs this wel help i want to wire stuff up in the next few days just waiting on second meeblip micro not shure if in stock yet ..
  • andrew.harperandrew.harper

    i got my micro blip the other day but i need to change one to work with a another midi channel i ask at the time of ordering but was not done so how can i reprogram the main cpu .. what hardware would need .. also as i am replacing the board i will need some new parts i need the 0.1uf yellow 3 of them

  • meeblipmeeblip

    Damn. Sorry about that. I can send you another chip set to Channel 2. It's programmed with a standard AVR programmer, the only thing that has to be changed is the last byte of the EEPROM memory (which stores a the MIDI channel as a number from 1-16).

  • andrew.harperandrew.harper

    Thats fine 1 am thinking about the future firmware updates so its a good idea to work out how to upgrade the chips ..

    i been looking at this on ebay not shure if this will do the job USBASP USBISP AVRDude USB AVR Programmer Adapter Port for ATmega8 ATtiny10 http://www.ebay.co.uk/itm/USBASP-USBISP-AVRDude-USB-AVR-Programmer-Adapter-Port-for-ATmega8-ATtiny10-/230697850818?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item35b6a9d7c2#ht_1764wt_939

    Description:

    USB ISP programmer download adapter Specially designed for laptop use Over current protection with 500mA resettable fuse for main board safety Voltage regulating with two 3.6V VR-tubes Two voltages are selectable, 3.3V or 5V Automatic download speed regulation Steady download speed Cable Length: Approx. 66 cm Support chips as listed (Note: all chip models with "L " can use program of the same type)

    AT89S51, AT89S52, AT89S8253, AT89S2051, AT89S4051, AT86RF401, AT90CAN32, AT90CAN64, AT90CAN128, AT90PWM2, AT90PWM2B, AT90PWM3, AT90PWM3B, AT90PWM81, AT90PWM216, AT90PWM316, AT90S1200, AT90S2313, AT90S2323, AT90S2343, AT90S4414, AT90S4433, AT90S4434, AT90S8515, AT90S8535, AT90SCR100H, AT90USB82, AT90USB162, AT90USB646, AT90USB647, AT90USB1286, AT90USB1287, ATmega8, ATmega8A, ATmega8U2, ATmega8HVA, ATmega16, ATmega16A, ATmega16HVA, ATmega16HVB, ATmega16M1, ATmega16U2, ATmega16U4, ATmega32, ATmega32A, ATmega32C1, ATmega32HVB, ATmega32M1, ATmega32U2, ATmega32U4, ATmega32U6, ATmega48, ATmega48P, ATmega48PA, ATmega64, ATmega64A, ATmega64C1, ATmega64M1, ATmega88, ATmega88P, ATmega88PA, ATmega103, ATmega128, ATmega128A, ATmega128RFA1, ATmega161,ATmega162, ATmega163, ATmega164P, ATmega164PA, ATmega165,ATmega165P, ATmega168, ATmega168P, ATmega168PA, ATmega169, ATmega169P, ATmega323, ATmega324, ATmega324PA, ATmega325, ATmega325P, ATmega328P, ATmega329, ATmega329P, ATmega406, ATmega640, ATmega644, ATmega644P, ATmega644PA, ATmega645, ATmega649, ATmega1280, ATmega1281, ATmega1284P, ATmega2560, ATmega2561, ATmega3250, ATmega3250P, ATmega3290, ATmega3290P, ATmega6450, ATmega6490, ATmega8515, ATmega8535, ATtiny10, ATtiny11, ATtiny12, ATtiny13, ATtiny13A, ATtiny15, ATtiny22, ATtiny24, ATtiny24A, ATtiny25, ATtiny26, ATtiny28, ATtiny43U, ATtiny44, ATtiny44A, ATtiny45, ATtiny48, ATtiny84, ATtiny85, ATtiny88, ATtiny167,ATtiny261, ATtiny261A,ATtiny461,ATtiny861, ATtiny861A, ATtiny2313,

    Just looking at software i may need for the progamming now .. i going to order some replacement chips .. just in case .

  • andrew.harperandrew.harper

    ok some updates i got the bits for the dual boards .. on thusday after early start to post office.. i build the first board but i had some bits missing that i need to get .. so i decided to build the kit and so far this how its looking .. http://i1243.photobucket.com/albums/gg543/01012k7/MeeBlip/IMAG0407.jpg http://i1243.photobucket.com/albums/gg543/01012k7/MeeBlip/IMAG0409.jpg http://i1243.photobucket.com/albums/gg543/01012k7/MeeBlip/IMAG0408.jpg

    i have also installed some pcb pins for switches and pots so i don't have to solder the wires in the board as this can snap off when installing and moving pront panel also i have leds to wire for MIDI Activity LED also Power leds and Shift Knob Leds so i know when the shift knob is set ..just waiting on parts for first board ..

    http://www.maplin.co.uk/type-2145-pcb-solder-pins-1933..

  • meeblipmeeblip

    Those programmers should work just fine. Make sure you get one with a 6 pin programming cable, though (this one looks like it has a 10 pin connector). Some have both 6 pin and 10 pin headers attached to the same cable.

  • andrew.harperandrew.harper

    hi one thing i trying to replace but cannot find the right part is for c13,c5,c45 caps i cannot find the same but was told that 100nf y5v ceramic capacitor are the same but think this wrong http://www.rapidonline.com/SearchResults.aspx?kw=dielect ceramic 100nf are they right ..

  • meeblipmeeblip

    Sure. 100 nF = 0.1uF. These will work perfectly as bypass capacitors in the MeeBlip. Make sure you get the ones with 2.5mm spacing between the leads so they fit into the board nicely. The tolerance of the Y5V capacitors is very loose, but it doesn't really matter in this application. Don't use Y5V caps in the filter section, though. :)

  • andrew.harperandrew.harper

    what would you suggest i nomal use rapid for parts

  • andrew.harperandrew.harper

    Tantalum Bead Capacitors http://www.maplin.co.uk/tantalum-bead-capacitors-394 think i have install them but were told they are wrong ..

  • meeblipmeeblip

    you can use NPO or X7R ceramics.

  • andrew.harperandrew.harper

    well was using the right ones http://www.maplin.co.uk/resin-dipped-ceramic-capacitors-297

    Monores Cap 0.1uF Order Code: RA49D Thxs for your help james :)

  • andrew.harperandrew.harper

    ok time to wire pots and switches up also the midi led is it a 2.5 volt

  • meeblipmeeblip

    It's a bog standard 2V LED with a bog standard 220 Ohm resistor. That way I didn't have to calculate anything.

  • andrew.harperandrew.harper

    well just order the last of the parts 2 mins ago should pick them up some time to day i run the t meeblips last night and run one as right and the other as left thats the way i config it soulds nice but to night have pots and switches to do but very happy with the way its turning out so far ...

  • andrew.harperandrew.harper

    Its almost done i just need to sort the volume out its may need a another pot but its working .. i will try and make a demo and a video but will not be that geat ...

  • andrew.harperandrew.harper

    ok i got the USBASP USBISP AVRDude USB AVR Programmer Adapter Port for ATmega8 ATtiny10 which has a 10 pin isp connection also i have a 10 to 6 pin adaptor on its way i need to get some programmer software for this which i hope is free or not to much to buy any ideas ..

  • meeblipmeeblip

    avrdude is the standard free programming software. http://meeblip.com/use-one/upload-new-firmware-to-your-meeblip/

  • andrew.harperandrew.harper

    thxs by the way i am running 2 meeblip and 9 extra leds on the power adaptor its a 500ma should i upgrade to a 1amp adaptor ???? :-)) no peace for the wicked =))

  • meeblipmeeblip

    2 MeeBlips should draw less than 200 mA. LEDs are usually 20-30mA each. So you're probably drawing about 400 mA.

  • andrew.harperandrew.harper

    i found a 800ma power adaptor the one i had was 500ma but was from china cost me $3 dollars including post as the 800ma is not being used and was from a company called maplins ..but thxs for the reply and your always helpful and i appreciate it

  • andrew.harperandrew.harper

    here a pictures showing the shift knob leds http://i1243.photobucket.com/albums/gg543/01012k7/MeeBlip/IMAG0441.jpg

  • orangebugorangebug

    that looks awesome man! Can't wait to hear this thing (although I assume it sounds like 2 meeblips playing at the same time ;) )

  • andrew.harperandrew.harper

    well i am at the moment working on a big project so not had much time to do stuff i may also need to order a chip which is set to midi channel 2 but when that sorted i post here

  • andrew.harperandrew.harper

    also this to james can another filter be connect to a Meeblip like anther vcf filter ??? as i have korg ms 20 vcf clone i am making ..

  • meeblipmeeblip

    Yes, it's possible to drive an analog filter from Meeblip. There are two 8-bit outputs on the DAC chip - they're currently both used to generate the audio waveform. It's possible to use just one output to generate an 8-bit waveform. That leave the other output to provide 0-5V cv to control filter cutoff on an analog filter.

    It works even better with a higher resolution DAC. Or so a little bird tells me.... ;)

  • andrew.harperandrew.harper

    ok thxs i have a ms 20 and ms 50 clone i build just an idea think i may order a another micro for this project i have to look for some pin output on the chip ...

  • andrew.harperandrew.harper

    not much going on with this project but i would like to add a option for a lfo filter if it can be done

  • andrew.harperandrew.harper

    i have a tb303 clone thats not working any more was thinking of adding a option to run this filter

  • andrew.harperandrew.harper

    In 2 weeks i want to order another meeblip micro and extra cpu as i would like them to be set to midi channel 2 and 3 but my reason to want to get another micro is i have a dead freebass unit and was hoping to use the unit by driving it with micro here the a picture http://i1243.photobucket.com/albums/gg543/01012k7/FREEBASS-schems.jpg

  • meeblipmeeblip

    Andrew: we have about a dozen of the original Meeblip Micros kits still in stock.

  • andrew.harperandrew.harper

    at the moment I have a few things to sort out adjustments for the potentiometer not working that well also need to change the midi channel on one also updating the look a little with wood oak ends at the moment drying as they been sanded and lacquer going to take a llok at it this weekend

  • andrew.harperandrew.harper

    here a picture http://i1243.photobucket.com/albums/gg543/01012k7/MeeBlip/blipp.jpg [URL=http://s1243.photobucket.com/user/01012k7/media/MeeBlip/blipp.jpg.html]

Add a Comment