raphael

Especially you should never trust the ring colours of resistors! Sometimes red looks like brown and black like gray... The colours differ from manufacturer to manufacturer. So always do a quick check with your multimeter before you get this "a funny smell at power-up" incident ;D Raphael

tornado

Cool idea! Bot the problem will be: I don't know any software (sequencer or DAW) from which you will get relative(!) song positions. And that' what you need to get your fader positon. Or you would need the song "end"-time from which you can derive the relative position from MTC (MIDI Time Code). Instead of the fader you could use a jog-wheel for tansport like it is used in the MIDIBox-LC (Logic-/Macie-Control "clone"). Raphael

Just to clarify this "higher resolution" myth: There is no higher MIDI resolution with non-detented encs! The higher resolution only means that you get more increments/decrements per angle of rotation. So if xou got 24step encs you will get: -24 increments/decrements with the detented type -48 increments/decrements with the non-detented type So you have to turn the detented enc twice to get the same value as with the non-detented one. (Or you use the FAST Option in MIOS ;D. That's what I prefer instead of turning and turning and turn...) I think the diagram of Thorsten int he mentioned thred makes the encoder modes quite clear. raphael

Hi, This has nothing to do with performance, but with non-detented encoders you can use the "double resolution" feature (read this thread: http://www.midibox.org/cgi-bin/yabb/YaBB.cgi?board=parts_q;action=display;num=1048692275;start=4#4) I think that's what you've read. In general: NON-detented encoders are godd for 'smooth' operation of synth controls (like on the MB-SID or on the MB16E...). Detented encoders are good for application where you need a clear response for every change of a value (like with the MB-SEQ). Every 'click' is a increment/decrement. So it only depends on your preferences if you use detented or non-dtented encs) I always use detented encoders... even for soft-synth control.

Ups, I forgot: Yes, I use a 24LC512 in my new MB-SEQ. I'm still in design phase but the LC512 works. Raphael

Hi, Yes, you can use 24LC512 instead of the 256's. But most applications will only use 32KB of the 512 (which has 64KB) as you already mentioned. As far as I know only the MIDIbox SEQ uses the full capacity of a 24LC512 (as a optional replacement for 2 x 24LC256). Raphael

Das ist auch schwierig, da die Dinger so winzig sind. Ich kenne die Dioden von Claudia nicht. Evtl. kann Sie dir ja sagen, wie sich ihre Zener-Dioden (Das sind die mit 5,1 und 8,7V) von den normalen unterscheiden. Ich meinte aber eigntlich, du solltest die Polung der Dioden prüfen (mal angenommen, du hast sie nicht untereinander vertauscht...): Eine Seite der Diode hat einen Ring. Das ist die Kathode und entspricht dem Balken im Schaltsymbol (siehe JDM-Schaltplan). Du kannst die Lage der Ringe auch einfach mit diesem Bild vergleichen: http://www.ucapps.de/mbhp/mbhp_jdm_v2.gif Das ist OK. Gössere Spannungsfestigkeit hat noch kenem Elko geschadet ;) Da sollten 3 Wiederstände sein.... Raphael

Hi, Möglich ist das schon. Ich würde mir aber an deiner Stelle nochmal ganz genau die Polung der Dioden und Zener-Dioden anschauen. Selbst an Computern mit zu wenig Ausgangsspannung an der serielle Schnittstelle hatte ich immer mindestens 10-11V an MCLR (Zu wenig zu Programmieren!). Aber 0,5V? Da stimmt definitiv was an deiner Schaltung. Den Transistor solltest Du auch mal prüfen (Funktion und Polung). Raphael

Hi paulrevelcet, these are the absolute max. voltages from the 18F452 data sheet: So 7.5V is the ABSOLUTE maximum for Vdd. I hpoe your PIC is still working... Raphael

Viel Glück! Aber vergiss das Schlafen nicht  ;) Raphael, der gerade noch über seinem MBSEQ-Design brütet...

So was macht ne Höhensonne: http://www.toddespage.de/Funstuff/DAUs/DAUPics/Hoehensonne.htm ;D Die Dinger heißen heutzutage "Gesichtsbräuner" und haben dann leider UV-Lampen, die zum Belichten nicht mehr so gut sind. Die Alten (so bis 1980) bräunen äh... belichten aber wie Sau... Daher pay_Cs Tipp mit dem Recyclinghof Raphael

Hey Phattline! It works almost the other way round: 1. You get an account at Paypal (you have to give them your account data). 2. You order from SmahTV 3. You get an e-mail from paypal. 4. You transfer the money to paypal. 5. Smash gets the mony... ands sends you the encs. I've tried it (from Germany). Ups. Don't know anythin about austrian payball... But I've also some encoders from voti. They are really ok. Raphael

Hi zomoipotoi, Yes, you can. But you will get some jitter during the switch time. And you should use good switches with low transition resisance (Test one before you buy them all). Raphael

Hi Rooney, Like Screaming_Rabbit said, it depends on your software. But you could take a look at the Mackie and Emagic Logic manuals: http://www.emagic.de/media/support/content/manuals/LogicControl_en.pdf http://www.mackie.com/pdf/mackiecontroluniv_qs.pdf There are some detailed drawings of the faders with the markings in them. Raphael

Hello epochsounds, I'm from germany, so I get my sockets from reichelt (www.reichelt.de). But I looked at the moser site: They have a lot of MIDI sockets! You have to search for "DIN Circular Connectors". Take the 5pin ones. One which looks similar to the ones from my german distributor is part nr. 161-2105. Hope this helps Raphael

From the CORE site: 500mA 7-10V wall adaper is sufficient. I use 1A adapters for things like the SEQ, which has 2 bigger LCDs with backlight. The backlight gets its own 7805 too. Raphael

What thing ??? If you mean a midibox: It depends on what you use: How many Cores, LCDs, Motorfaders, AUOT? Has the LCD backlight?

Hello Roger, In short: 220R is just fine. I've found a interesting link for all the midibox users who are asking this question from time to time: http://www.theledlight.com/resistancecalculator.html Just enter the 'supply voltage' --> 5V The LED forward voltage Vf (voltage drop) --> 2.1 V in your case (take the typical value) The LED forward current If --> 20 mA in your (and the most) cases You will get 145R. So 220R is Ok (try a resistor with 200R or 180R for brighter LEDs but beware of overloading the outputs of the DOUT! 25mA is the maximum!). Easiest way: Do it with your calculator. The formula is: (Vbatt - Vf)/If = R So: (5V-2.1V)/0,02A = 145 R Hope this helps, Raphael

Hallo Julian, Ich zitiere hier mal Thorsten: Genau da habe ich auch 2 als Sample bestellt. (Ganz in Ordnung finde ich das zwar nicht, da der Service eigentlich für Hardware-Entwickler gedacht ist. Aber solange es die Dinger nirgedwo zu kaufen gibt...) Raphael

Yeah!! I'm looking for cheap motorfaders too ;D Raphael

Hello Jakeone, What do you mean with 'port'? The serial COM port interface via the LTC module? The midibox itself doesn't get faster with the serial port interface, but the data transmission does. Personally I prefer the standard midi connection because I use external midi devices which have no To-Com interface. And normally the midi data transmission is fast enough for sending and transmitting some CCs, like your midibox 64 will do. I don't understand what you mean with "puttin usb and then midi or port". If you mean the USB module from the MBHP, It's not faster as a standard midi connection. It' just another midi interface :) I've finished mine 2 weeks ago (after sone hours of hardware debugging - this damn SMD Chip...). Raphael

Hello Jakeone, I don't know how to get these knobs. Perhaps you could ask Resad himself (his e- mail address is given beside the photo of his box on the gallery site. Just repace the "_at_" with "@".). But in general you should consider to build a more "up to date" midibox. MB Plus is quite old and based on the older 16F877 PIC. Instead please take a look at the MB64 if you want to use pots. Personally I prefer encoders so I build a MB 64E. You can build these boxes with less than 64 pots/encoders if you don't need 64. Raphael

Hey Phattline, The exchange rates change every day. Today (19.09.2004) 1$ = 0.83€ (That's really cheap for an encoder!!!). Search for a online currency converter on the web. Raphael

I got one 6581 and one 8580 for testing. I liked the 8580 much more, so I'm building a 4x 8580 SID now... Raphael