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rmouneyres

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Posts posted by rmouneyres

  2. The HAARP, a Hardware Advanced Arpeggiator.

    in MIDIbox User Projects

    Posted

    10 hours ago, Spraytex said:

    Idem, il va transformer mon AX80 , slurps.

    Plus sérieusement, bravo pour le travail effectué, félicitations!

    Si j'ai bien compris, il n'est pas polyphonique?

    Merci d'avance pour la réponse.

    Oh si il est polyphonique ! Tu as 8 voies simultanées que tu peux router vers un canal/port midi dédié !

    -

    Yes it it polyphonic, you have 8 simultaneous voices you can route on a dedicated midi channel/port !

    • Like 1

  3. guitar fx switcher

    in Sale Requests

    Posted

    Hello,

    back in 2013, when I had spare time for personal project I built a guitar pedal switcher for the bassist in our band with MIOS on the PIC18f. It has been rapidly discussed in french here, and used without issues for about two years on stage in his pedalboard.

    With the current version it has the following features :

    • Midi In/out/through
    • LCD display with menu for options and presets
    • 8 relays with either switched or momentary state
    • 4 menu buttons, 8 relay command buttons with LED indicator
    • 100 user presets with midi recall
    • 4 programmable quick access buttons (footswitch recall preset) with LED indicator
    • grouping (radio mode) of relay buttons is possible

    You can see pictures on the unit on this album, and code with some infos can be downloaded from the post

    I thought about updating the wiki page with my built, and never effectively did it.

    Today I'm running a musical instruments repair business (www.audiotronic.fr), and doing builds on user request.

    I've been asked to design a similar system for a new french company willing to build pedalboard with integrated switcher system, and when I showed him my build he found the design of the system to be simple and effective and would like something very similar.

    So here I have two options : use the existing midibox code as a start (hence this request), or redo the thing from scratch on another system.

    There will be no secrets in the coding of this switcher, so I'd feel comfortable in sharing the updates in the code, while not mentioning the final product name publicly would make sense.

    I've not been an very active user in the midibox community, so let me know how you feel about this.

    Raphaël

  4. Trading EPROM for MB parts

    in Fleamarket

    Posted · Edited by rmouneyres

    Hello,

     

    I have a stock of EPROMs I won't use anymore.

    Before they're all gone for sale on ebay, I'd be happy to trade some for midibox parts.

     

    i'm interested in

    Especially a LPC17 board and parts (including LPCXPRESSO), or a MB_NG board and parts.

     

    here's what I have :

    27c512 qte 57 : 512K , 64K x 8 bits

    27c256 qte 12 : 256K , 32K x 8 bits

    27c010a qte 48 -10hs :  1Mbit , 128K x 8 bits

    27c2001 qte 183 :  1Mbit , 128K x 8 bits

    27c1001 qte 63 :  1Mbit , 128K x 8 bits

    27c020 qte 53 :  2Mbit , 256K x 8 bits

     

    If you have what i want and you won't use it, or have any other idea, let me know. I live in France, south south....

  6. free EPROM

    in Fleamarket

    Posted

    Look like you have many projects going on.

    Be careful of the weight. Those little beasts are becoming heavy when numerous…depends on your budget. If you want many of them, i'll have to go for a packet instead of an envelope and the price is not the same (minimum 16€ for 1Kg maximum, 25€ for 5Kg).

     

    Here are the detailed references I have, on the right is the maximum quantity i can offer for one person. Please pick a selection, and send me a message.

    Eprom

    27c512 qty 15

    27c256 qte 5

    27c010a qte 10

    27c2001 qte 20

    27c1001 qte 10

    27c020 qte 10

    SRAM

    Samsung K6T4008C1B qte 20

    Japan SRM20100LC70 qte 2

    M5M51008BP qte 2

  7. free EPROM

    in Fleamarket

    Posted

    hello,

    depending on how many you want price may vary. A dozen units would cost around 5€ in international simple letter I think.

    Tell me how many you want and i can tell you a more precise price.

    These are not intended to be for resale, but for personal projects.

  8. Guitar Pedal looper

    in Français

    Posted

    voici la version actuelle du code source pour le programme du pedal looper.

    Encore quelques améliorations à apporter, dont certaines sont documentées dans le fichier specification.rtf qui n'est pas forcément très à jour.

    les remarques sont les bienvenues !

    to be continued....

    PedalSwitcher.zip

  9. free EPROM

    in Fleamarket

    Posted · Edited by rmouneyres

    Hello,

     

    my employement company is destocking, i have an opportunity to have a lot fo EPROM for free :

    27C010
    27C020
    27C512

    from ST microelectronics, more than 100 units of each reference.

    and also SRAM chips

     

    Let me know rapidly if you are interested, so i decide to take them home or not.

     

    I will send them for postage costs only (shipping from FRANCE) until i have enough spare enveloppes to send them.

     

    Raphaël

  13. Guitar tuner for PIC based core

    in Miscellaneous

    Posted

    Hello,

    I've almost finished a guitar fx looper (which would need a major wiki update...), and i'm wondering if i could add a tuner to this box. As i'm not using any AIN, i have all the analog pins free to use. I think that the 10bits conversion is enough to have the guitar signal.

     

    I've found this in the forum but this is standalone project : 

     

    The code for the fx switcher is pretty small, and written in C. So i guess there is room for the tuner code.

    Is there any code block known that i could use ?

     

    thanks

    post-6390-0-80018600-1358376687_thumb.jp

  14. Guitar Pedal looper

    in Français

    Posted

    Bonne projet!

    Quel chip delay analogique est-ce que tu prends?

    Et comment est-ce que tu controle la période? Je veux construire un delay analogique avec des MN3008 chips, mais tous les controls sont des potentiomètres manuelles...

    Au revoir,

    Pierre :-)

    Bonjour, cette pédale ne contient pas de circuit analogique. C'est simplement un looper pour pédales externes.

    J'utilise un chip ULN2803 commandé par un DOUT.

    Si tu cherches des circuits delay, il y a quelques semaine, ce francais sur ebay : http://stores.ebay.fr/BILTOC-ELECTRONICS?_trksid=p4340.l2563 il avait des circuits avec un bon prix, mais plus maintenant... à surveiller

  15. Guitar Pedal looper

    in Français

    Posted

    Bonjour à tous,

    je sors de ma caverne pour refaire un tour dans le monde midibox. Objectif : créer un pedalboard analogique pour le bassiste de mon groupe, mais commandable en midi car notre set et tout automatisé (mais on joue quand même je vous rassure).

    J'ai bien bien avancé à ce jour, il me manque la PCB de la carte relais qui arrivera après noël. Donc ce post me permet de partager mon enthousiasme, de vous présenter mon projet avant de le finaliser, et surement de devoir mettre à jour le wiki qui contient déjà des bases dont je me suis inspiré. J'ai aussi tiré des infos du super site techniguitare qui propose un looper de très bonne facture, mais auquel il manquait deux trois petites choses pour que ca me convienne vraiment. Et ayant des boards midibox en stock je gagnais du temps.

    Celà a également été l'occasion pour moi de me replonger dans le codage en C avec MIOS, un vrai régal pour les fainéants comme moi :afro:

    Une fois que j'aurai validé la bête je pourrai soumettre mon travail aux critiques ;)

    Trèves de plaisanteries, voici quelques photos :

    switcher1.jpg

    switcher2.jpg

    switcher3.jpg

    N'hésitez pas à poser des questions,

    A bientôt

    Raphaël

  17. USB GM5 under linux

    in Miscellaneous

    Posted

    yes it is working fine with outputs 2 to 5 :)

    Then for output 1 them problem is still here, even with grounding the case of the GM5. Now maybe I can ground the case of the computer itself. But this will be ground, not earth. BEcause as it is a 1U rack case powered with an external PSU. I only have 12V coming in the computer...

    But this doens't explain why outputs 2 to 5 are working...

    I have another alternative : connecting output 1 on my veroboard like the other outputs, but i need to add more circuits on a full veroboard.... probably ugly job... i'm not enthusiast :hmm:

    As i'm not on a hurry about this, i'll do more experiment, and let you know when i have more news, hopefully solved.

    All those EMI discussion never go too far from what i've read, just trying other cables (what i've done already), ferrites, changing ports.... may you find something usefull, let me know

  18. USB GM5 under linux

    in Miscellaneous

    Posted · Edited by rmouneyres

    ok thank you guys for answering, so here we are :

    The problem occurs with any software i'm using (SEQ or puredata mainly) with alsamidi or jack.

    And it only happends when the ports is in use (midi data flowing out).

    The dmesg was a great thing to check, thanks pilo :

    usb 4-0:1.0: port 1 disabled by hub (EMI ?), re-enabling...

    usb 4-1: usb disconnect address 13

    usb 4-1: new full speed USB device using uhci_hcd and address 14

    usb 4-1: configuration #1 chosen from 1 choice

    So after looking for some help on the net, it looks like this is very related to EMI grounding problems.

    I have to admit I haven't done any grounding to the chassis in my build.

    The case is all aluminium, should I connect the chassis to the USB ground ?

    (The macbook laptop would not suffer from these grounding problems...)

    EDIT ::

    The problem occurs only when connecting midi out 1 on the GM5 board (the small midibox one)

    when i use the midi outs 2 to 5 from the expansion board (on a veroboard), it is working ok !

    I could have a bad soldering on the midi out connector of the GM5 board. I'm taking a look at that now. >> result = not better

    here i'm looking forward to your advices

  19. USB GM5 under linux

    in Miscellaneous

    Posted

    hey, after replacing the capacitors with more adequate ones, the problem is still here. Somewhat different because it is now stable for about 1 minute, then it dissapears/reappers every 5 seconds or so...missing so notes when there is the gap.

    Under osx, the box has been proved stable for one day long in live situation, so i'm now confident that the board is ok.

    I'm going to test with another linux distro (now it is tangostudio), maybe there is something wrong on the usb driver side, or maybe the powering (as i'm using an mini itx board with a picopsu...rated at minimal power requirements)

  20. USB GM5 under linux

    in Miscellaneous

    Posted

    Hi there.

    I've been using 2 GM5x5x5's with several Linux distributions (mostly Debian and Arch) for a long time now and never had any problems.

    Really just plug and play and worked 100%, running for days...

    Sorry if thats not much help for you :/

    thank you for your answer, i'm still happy to know it's really stable !

    Yesterday, i found two capacitors with bad soldering (between ground and Vcc), so it was probably the source problem, as after that it worked ok for about one hour.

    I'll do some stress test before going live, but i'm now confident :)

    thanks again :)

  21. USB GM5 under linux

    in Miscellaneous

    Posted

    Hello,

    I purchased 1 GM5 chip and pcb a long time ago, and have just soldered it (not easy).

    pluggin into mac osx was instant sucess

    After a stress test of about one hour with constant midi flow, i declared the board OK

    Now pluging into a linux ubuntu (tangostudio) the device is recognised by alsa and 5 ports listed, all ok up to here.

    either with aconnect or graphically with qjackctl i can wire something to the ploytec.

    The problem is : The connection disappears itself after 5 seconds :pinch:

    sometimes i can reconnect it, but it disappears again, and always, it is finally stucked, still listed but nothing gets in or out ...

    I tried different usb ports, external powered hub, no difference.

    Does anyone has experience with this board and linux and could help ?

  22. Light weight MIDI player/sequencer

    in Miscellaneous

    Posted

    My needs are quite similar (small, reliable, midifile player), and MANY THANKS guys, here is the answer, midibox again is the winner ! :frantics:

    My last post was about the mackie HUI to remote control the mixer, and now the midifile player can be done with the same midibox, i'm just dreaming awake !

    sonner or later my band will be "all midibox powered" ;)

  23. Midibox LC modification

    in MIDIbox HUIs

    Posted · Edited by rmouneyres

    Hello,

    i'm planning to build a midibox LC (to control a fireface UFX with mackie control protocol)

    But i would like to :

    - replace the motofaders with Encoders+Ledbars (my main question)

    - don't mount the majority of buttons (this should be no problem with the code)

    so the controller can be smaller

    Is it possible by doing small changes to the original firmware code ? could someone give me some hints ?

    Raphaël

    ------------------

    edit :

    :unsure: oups....i missed the sticky post about the LC saying

    "OPTIONAL: 8 motorfaders (but not necessary at all when you use the split mode in order to swap the purpose of encoders and faders)"

    So the answer to my question would be to use the split mode ? I'm going to look at this, sorry...

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