TK. Posted January 20, 2003 Report Posted January 20, 2003 Here some uncommented photos which should give some hints for your own construction and should give an impression about the effort. I suppose that an experienced DIYer can build a similar box in between 2 weeks, unexperienced DIYers maybe need longer, but since the box can be enhanced step by step the first success (Cubase or Logic regognizes the MC/LC device) should come within one day, and the rest is just a matter of time...http://www.midibox.org/midibox_lc_photos/Note that my version is very compact, most has been build on vectorboards, because on this way I was able to vary the size of the modules. For the guys who are able to etch boards by themself: make it easier than me and layout also the boards for the buttons, encoders, etc. & feel free to publish your layouts! :)Another important suggestion: don't order a panel before you've prepared the boards for the encoders/buttons/LEDs, and before you are able to measure the dimensions in order to ensure that everything fits fine. Because nothing is worse than an expensive panel with too big or small slots and holes! (I had luck ;-))Thats all for today... :)Best Regards, Thorsten. Quote
d2k Posted January 20, 2003 Report Posted January 20, 2003 Excellent work ;D, looks stunning!I've ordered the same LCD from reicfelt and notcied on 15.jpg that u have a pot attached to the LCD. Is that to adjust the output voltage? (pins 20 & 3) What value is it 1k, 10k?Great stuff!D Quote
TK. Posted January 21, 2003 Author Report Posted January 21, 2003 Hi Dan,yes, thats the contrast pot. In difference to small dotmatrix LCDs the graphic LCDs normaly need a negative voltage at V0. Fortunately the 64240A already includes a voltage converter, which has to be connected via the 10k pot to V0.Note also that this LCD has 4 Chip Select lines, which have to be connected like shown here: http://www.ucapps.de/mbhp/mbhp_glcd_64240a.gifDid you already send your order to Reichelt? If not here an important hint: for the 40 MHz system clock the PIC18F452 needs a 10 MHz crystal which will be quadrupled internally by a PLL - the PLL works only with factor 4 and not with factor 2 :-/Best Regards, Thorsten. Quote
d2k Posted January 21, 2003 Report Posted January 21, 2003 yes, my order has already been proceed and the components are in transit...so, i guess now I must hunt a 10Mhz xtal - i'm sure i can get that locally ;)Thanks... Quote
d2k Posted January 21, 2003 Report Posted January 21, 2003 is this okay to use:SX0-200B10,36800 MHzor:HC18 11,0592 MHzCheers... Quote
TK. Posted January 22, 2003 Author Report Posted January 22, 2003 No, it isn't ok, it must be exactly 10.0000 MHz, otherwise the MIDI baudrate will not be cannot be achievedBest Regards, Thorsten. Quote
jerash Posted February 8, 2003 Report Posted February 8, 2003 hello thorsten, does this display is fully compatible with the midibox64 ? it looks so different and so pretty compared to Character based LCDs.thanks for your helpRAF Quote
TK. Posted February 8, 2003 Author Report Posted February 8, 2003 Hi RAF,no, thats a graphical LCD which is not compatible. See some threads below for the upcoming solutions.Best Regards, Thorsten. Quote
jerash Posted February 8, 2003 Report Posted February 8, 2003 ok i got it now. ::)So i'll focus on my first MBHP to control my Yamaha 03D Digital Mixer with a lot of knobs and faders to controls those EQs and Effects Sends in Live situations.One more question : Rotary encoders are available on MB16E and connected to a DIN module. As there is also DIN modules in the MB64, is it possible to replace buttons with encoders ? except if the firmware is not compatible.RAF Quote
TK. Posted February 8, 2003 Author Report Posted February 8, 2003 This will be possible with the upcoming PIC18F firmware -> see news section :)Best Regards, Thorsten. Quote
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