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Ravager posted a topic in Design ConceptsLast week I have dug up one of my older projects: for a long time I wanted to create large capacitive touch pad that only uses PCB layout as touch-sensitive components. I chose a PIC24FJ128 because it comes with 50 ADC channels that have hardware-support capacitive measurements so I could create a 2D matrix similar to a Freescale reference design. Note how on one side of the pcb there is no single component so it should fit nicely directly under the hood for many projects. But I assume it's a bit large for some applications. This single-side-placement design lead to only SMD parts being used. Sorry it's not really DIY. In theory the thing should be rather cheap. I'm guessing 10-25€ with the majority being for placement & soldering of the TQFP100. Eventually it will communicate via SPI and should thus be midibox-compatible but it should also be usable as a standalone USB device and either be a mouse or a midi controller that sends CC messages directly to your DAW. We'll see about what can be done. I'm thinking in some cases even multi-touch may be possible but I'll have to experiment with the algorithms here. My plan was to start designing the finger tracking algorithms on the PC. For this I was hoping to intially have the ADC data transmitted over USB in real time to my PC application where I could prototype algorithms. So this would be yet a third USB device type I need in the beginning but which will not be available after development has finished. About 3 years ago it turned out developing a USB stack for a PIC µC with the tools available back then is a real pain. It lead to me dropping the project. I don't have much more time these days but maybe someone is interested in a collaboration? Or maybe you guys know if the tools are better today? Is there anyone out there who would have an easy time developing µC C code for the USB stacks I mentioned? I'm currently based in Munich, Germany but this is not a must! Furthermore, would anybody be interested in actually having some of these (given I/we manage to get to a stable version that can be released) ?
The thing stopping me from making a MIDIbox Logic Control has always been the lack of suitable commercially available displays. Has anybody ever considered trying the MacBook Pro touch bar? It's a 2170x60 colour graphical OLED, and it can be bought for around 30 dollars. Maybe it would be perfect for a scribble strip for 8 faders. I have no idea if data is available for this though.... https://www.aliexpress.com/item/Original-NEW-A1706-Touch-Bar-for-Macbook-PRO-Retina-13-Inch-A1706-2016-Touchbar-Replacement/32821436004.html
Bonjour, Je me prÃ©sente, je suis NicolÃ¡s, guitariste acoustique et passionnÃ© par les possibilitÃ©s du MIDI depuis mon plus jeune age, mÃªme si j'ai dÃ©couvert plus tard que je ne pouvais pas brancher mon joystick sur le synthÃ©tiseur de papa :) Je me pose actuellement quelques questions concernant la gestion d'appareils midi depuis un Ã©cran tactile, et j'aurai besoin de quelques renseignements pour aller plus de l'avant: Etant donnÃ© que je me dÃ©patouille plutot en Macromedia Flash: oÃ¹ trouver de la doc pour communiquer via midi? Comme je suis nase en Ã©lÃ©ctronique: comment adapter les modules proposÃ©s par le fantastique site de uCApps pour pouvoir leur intÃ©grer une interface tactile? Genre un convertisseur de potentiomÃ¨tre virtuel en valeurs physiques... points suivants Ã venir, n'Ã©sitez pas Ã participer... Voila, merci de vos rÃ©ponses et de vos suggestions. A trÃ¨s bientÃ´t! NicolÃ¡s
Hy! My name is Nicolas, and I'll try to translate an already posted message in french. Im passionated on MIDI technologies since I was a little boy, even if I understood later that i could'nt connect my joystick to dads minimoog ;) Now Im looking to develop a touchscreen interface to manage different hardware equipments, so I need some peace of information to go forward on this: As Im rather good on Macromedia Flash: where do you think I can find information on how to communicate via MIDI protocols? But I'm a really bad electronician: so how can i find info on to integrate to fantastic uCApps interfaces touch screen capabilities? next points to come. Thank you for your comments! See you very soon, Nicolas *