doc

Hi julien, I think you gave the answer to yourself ... :-\ If it was working before ... and now not? Other users (like above) were reporting that the display was damaged after a wrong connection... so what do you want to hear ? Please double check your cabling to the display. There is a slight change that only a connection is broken or something else. But if everything is all right .... it died. Try another display on the same Core and if it works you'll know it definitly. :'( Sorry ... but shit happens 8) greets Doc

ok, now it's getting clearer. With the mosfet as driver you won't run in any power problem. The small amount of voltage you have after power off is normal in this circuit. If you want to make it absolute sure, you can use a solid state relais as load to switch your seq on and off. Doing this, you also have no problem with the different levels (+9 -18 V versus +5V for Core). If you drive this circuit with 5V, you have to change some resistor values, I guess. greets Doc

Ok ... dann weiter in kurz: Die Applikation ist komplett ... muß aber i.d.Regel auf Deine Box angepasst werden. greets Doc

Hi, there are many possibilities to use a tact switch as a power toggle. The easiest is a transistor, 2 caps and two resistors ... I don't know yours, but: 0.6V to the core isn't really a problem. It will work as if it's shut off. No problem there. Please pay attention on the current your "power off" switch must handle! (As said before, I don't know your circuit). greets Doc

Hi, kurz und bündig: Nein. ...dann wird es auch etwas schwerer für Dich, sich durch die ucapps Site zu lesen. Manche Sachen sind zwar übersetzt, aber bei weitem nicht alles. Zwingend erforderlich (siehe meine Vorredner) ist jedoch, das Du Dich etwas intensiver mit der Materie auseinandersetzt. Versuch es zur Not mit einem Translater. Gruss Doc

Hm .... next time I drink my coffee first. @julien I just wanted to say my opinion .... I don't like the spirit. ok? I didn't wanted to start a attack against anything and anybody (.. and I also didn't wanted to start a war or a battle ...) Sorry, if anybody gets me wrong (normally I'm a nice guy ...) jealous ? - No. I make my money by producing (my own) ideas, also. PEACE! greets Doc

*wow* Sometimes I can't believe, what is written here .... Which part of the small sentence NON COMMERCIAL is so hard to understand ??? False .. You can get a patent on YOUR idea, but you can't use ideas of other for your profit. Forgive me, but I interpret your wish this way: You've learned how to solder a midibox and you have a idea on this and now you want to make profit on this. ... I don't like this spirit ! Sorry Thorsten, I know you are the only one who wants to answer those requests ... but I couldn't hold back this time ... and I also know, you are much to polite to write it this way. (I hadn't my black coffee this morning, so please forgive me ...) greets Doc

Which version of firmware did you use? Which MIOS is on the PICs? Did you any mods on your firmware? Try to upload the ain64_din128_dout128_v1_3 app and verify each button is working. greets Doc

Hi, I don't know the moog ribbon controller, but with three cables ..... Maybe it works like a pot? Can you measure the resistance between the outer cables. Then try to measure, if the resistance change between the first and the second pin when slide on the controller. If it works not that way (with a simple resistance change) it would be not that easy to use (maybe incuctive?). greets Doc

Hallo und willkommen in der MIDIbox-Gemeinde. Dein Erfahrungsbericht ist natürlich willkommen und auch dein SEQ sieht echt toll aus! Ich würde ihm noch eine schöne Schaefer-Frontplatte spendieren, dann wäre er perfekt. Andererseits sieht die Sperrholz-Frontplatte auch echt toll aus. Hat auf jeden Fall was. greets Doc

Bisher kamen alle meine meine Bestellungen von SmashTV ohne Zoll an. gruss Doc

... 10...15mA per Output. Not more!! .. or you'll fry them. For more current use transistors (or ULN Arrays) greets Doc

Dieser Bildschirm wird normalerweise gelöscht, sobald Cubase startet. Hast Du die Box korrekt in Cubase als Gerät eingerichtet ? (Mackie Controller & Midi-Ports zuweisen ..; Midi Port exclusiv für die LC?) Hardwareseitig bleibt eigentlich nur ein fehlerhaft angeschlossenes Display oder ein fehlerhafter Upload der Applikation. Hast Du schon mal eine Testapplikation erfolgreich geladen (z.B. ain64_din128_dout128_v1_3 oder den lcd-interconnection test)? Eine andere Möglichkeit wäre eine fehlerhafte Midi-Verbindung. (CORE empfängt keine oder nicht alle Daten vom Host) Nochwas ist mir eingefallen... mess mal die 5V Spannung nach bei angeschlossenem Display. Wenn Sie unter 4,5V sinkt, ist dein Netzteil zu klein. Welches Netzteil verwendest Du? greets Doc

If it won't work as /tilted/ said, here a hardware solution: Drive the bicolor LEDs through a ULN Array (see: midio128) and you have a common anode ... greets Doc

Uuups. You're right. ... next time I have to read a bit better... :-\ ( I thought you would like to merge 8 Fader + 7 Fader + master to a single Midi-Port... THAT wouldn't work..) If you merge both Cores (with 8 + 1 Fader) you'll need a strong Filter to seperate them. Thats also right and would work. A side-question: Is this worth the effort (second Core, mf, Merger, Filter ... ) just for one more fader (master) ? I never used the master Fader of my mackie. For controlling the output I prefer BIG KNOB. greets Doc

No. Only 8 Faders per CORE possible. and Each CORE must have a dedicated Midi-Port for the LC. You would win nothing by merging, because the 8th fader would work in parallel with the master-fader. Thats not what you want, or? The ONLY possible way is to use 2 CORES and two Midi-Ports. greets Doc

Die Zahlen neben den Gattern sind die PIN Nummern .... ... soll heissen: Ist wurschegal. Nimm den, den Du kriegen lannst. Übrigens ist es nur EIN 74LS14. Wenn Du die Nummern zählst, kommst Du auf 14 Füsse 8) Gruß Doc

Each Midibox LC MUST have its own midi-Interface. He wants to connect two LC's (both doing the same) to only one host interface. Thats why he needs it. Two midi-channels wouldn't work. greets Doc

Ok. Heres the circuit for the midi-thru: http://www.docstudios.de/midibox/midi-thru.pdf I used this circuit often. Last time I used it to connect a midibox LC with a Mackie Control :D greets Doc

I mean a circuit, that "splits" the midi signal in two seperate signals - better known as "Midi-Thru-box". The opposite of a merger ... There is also a circuit around here (based on the 74HC00) , but I designed another one. I'm a little short in time now, but I'll give you the circuit tomorrow, ok ? greets Doc

For the grounding issue, please try the following: Try to seperate the case grounding and the circuit grounding as follows: Wire a 10 Ohm Resistor and a 100n (keramic) cap in parrallel. Connect this filter between your circuit-ground (from the pcb) and the case. Connect the case to main-earth. Normally this reduces the hum and you have both grounded. The case and the circuit. Your hum issue could also have another reason: What kind of transformer did you have inside your case? Please try (for a test) to put the transformer outside the SID Case and verify your hum. If it's gone you have to use another transformer inside the case or you put your transformer outside in a seperate case. greets Doc

Hi, no stupid question .... I did this once to connect a Mackie Universal and and a midibox (Led-Vu-Meter). If you connect two LC , both would do exactly the same, thats right. I'm unsure, if a MIDImerger would be the right solution. In fact you would need a Midi-Merger for the Midi-In and a "splitter" (only one IC ...) for the Midi-Out. I don't understand, why you want this ... but it would work. greets Doc

I remember a time that accidentaly I conneted (PIN28=9vdc to PIN27=audio out ) when the power supply is on but it was just a second . Can it cause the Chip to damage ? I think, you've answered your question. ... :( A second is a very long time .... I don't know the specs of the audio out Pin exactly, but this could be the reason for it. You should verify this by trying a different SID chip, if possible. greets Doc

quiet, audiowise: This depends not only on the PSU, it also depends on the transformer and the wiring. Test: There's not a lot that can be tested. If you want to test it, you just need to measure the ripple at the output(s). If you have a good digital multimeter you can measure the ripple yourself: Switch your multimeter to AC (Yes: AC!) and measure at each output the (AC-)Voltage. The lower the value, the better is your PSU for audio purpose. greets Doc

Yes. Just have a look at the MIDIO128. You'll need a Core and and a DIN Module for your projekt. greets Doc