jasper81

make sure yur transformer can also deliver the power.. Most cheap transformers can't handle high currents

Try Tech. universities or something similar. Racks have been in use for ages and at my Uni sometimes they just throw the things away.. so...if yur lucky...you walk away with a few..:)

My experience tells me the following: It's very well possible to create your own midi keyboard. using buttons as keys ( like a roland mc-303) it actualy is very simple... BUT if you are planning on building a pianolike keyboard...:) look at the post before this one. Ofcourse it's possible to create velocity detection..by use of piezo's or electromechanical devices...but I'll bet you...that when you add all the costs for the components together + the amount of time you spend on designing + building +tuning etc. together, you can buy yourself a big cool midikeyboard, which will probably work even better. What IS a good option is buying a cheap midikeyboard...and add a midi box inside it....so you can add knobs buttons Leds encoders or whatever... greetz Jasper

I cannot say I had the same problem as you, but I can ofcoure make some suggestions to what the problem could be. 1) you made some construction error (again just to make sure even more) try drawing exactly what you see on the vector board and compare it to the schematic also use a multimeter to check the resistance on all yur soldiered pads, just to make sure everything is connected also check if there's no short circuits 2) broken wire check the resistance between your connector and the vectorboard...maybe your prog cable is busted? 3) Windows sucks Maybe for some reason Windows is blocking your incoming data or is blocking IC prog? 4) You blew up yur serial port? you probably checked all of this...but just to make sure?..:)

Great thnx Ian...I'll make sure to sink'm too

Just wondering, the 7805 will get hot when delivering over half an ampere. Lets say I use the DOUT with leds and connect 32 of them. Also asume I have all outputs activated at a certain point. Using 220 ohm resistors will give me ( assuming led takes 1.2V) 32*3.8/220 = 0.553 ampere. Since the module is getting is current from the 7805, and ofcourse other modules and a PIC are connected to it, wont it get very hot from this?... anyone any expreciences with this?

great, thanks for the quick reply...

Well it's a very simple question, when I buy my PIC controller...do I have to put in a boot loader first before I can use the JDM? Or can I program it with the Hex files from the webpage imediatly when I take the wrapper off? thnx Jasper

Great..:) thank you for the quick reply..and ofcourse the answer..

Hi all, I've heard of the midibox quite a long time ago and back then read all about it and found it very interresting...but haven't decided to build one up until now... But okay there's one issue I haven't been able to figure out..I did look for it in this forum and the site...but ofcourse I can have over looked it someplace... but okay here it is Is it possible to have the midibox ( talking bout the midibox64) send it's events over different channels? so e.g. pot 1-30 on channel 2 and 31 on channel 10 etc. ?? or maybe in a simpler way have the whole midibox transmit it's data on midi channel 2? I hope someone can tell me this... Thnx alot Jasper