HI!
Thanks for your answers!
The two seperate PSUs aren’t really PSUs, they are laboratory power supplys(regelbare Labor Netzteile).
Concerning the LCD:
I find out, that if the LCDs become more than 24 chars, they would overload and do nothing more.
Now, the question is, how to bring the core, that it don’t send more than 24 chars per LCD.
This you can do in the lc_hlp, i reckon. I’ll test it…
Now, the question is, how to bring the core, that it don’t send more than 24 chars per LCD.
This you can do in the lc_hlp, i reckon. I’ll test it…
… read /tilted/'s reply just above.
Greets, Roger
strange, first, I’ve test it with the 48, but it doesn’t work. After watching Star Trek this evening, I test it again, first, the LCD shows senseless things. I was’t able to upload any application(overrun error). Reload the MIOS, and everything work fine, oddly…
Now, there is only one problem left. The first LCD shows Chanel 1-4 but the second only the 7th.(I’ll make photos next day)
But I for sure, that you can configure that in the lc_hlp and lc_clcd…
Is Axel still around? Maybe he can get me his code… He got 2 2x24 LCDs per LC
cheers and good knight(yes, knight, not night 
Knight Rider, David Hasselhof :-D)
Hi!
Now, I’ve finished the hardware part of my LC, look:
(a little applicaiton which turns every LED on)
Unfortunately I got still the problem with the motorfaders.
@MTE, can you explain me how to make separate power supplies for each fader?
Thanks!
greetings
I think MTE was joking about the multiple power supplies …
Looking at the datasheet I see the max motor current stated is 800mA@10v, but I guess this is only reached if you try to stop the motor with your hand, not if the fader is moving freely.
A good idea would be to measure the normal average current consumption of the fader and see if that multiplied by 8 is more than the 317 can handle. Then you’d have a problem …
A LM338K can handle 5amps with the right heatsink, but of course you’d need the transfo and caps of your PS to follow.
As MTE said, if you don’t have a large enough heatsink the temperature protection kicks in to prevent the chip from blowing up, and the output voltage is reduced as a consequence.
mhh, but why is the 5V affected?(LCDs get darker and somtimes the wohle core reboot)
I saw you’re using seperate PSUs. This behavior indicates a coupling between the two supplies, so it must lie elsewhere. I’d say check for shorts or any other possible source of coupling (defective cap, blown IC)
I think MTE was joking about the multiple power supplies …
… this was not a joke. I think I first saw that on Doc’s LC. Actually not multible powersupplies, but multible regulators.
Just redesign the MF board, so you have a regulator (incl. Trimmers, resistors…) for every single fader.
Greets, Roger
PS: But I still think that this is not really the problem of your Box’ behaviour.
Well, sorry I misinterpreted your post …
So the intent of putting one regulator / fader would be to have 1.5A current capacity/fader ?
According to the datasheet 1.5A could nearly supply 2 faders @800mA each, so 1 LM317 per fader pair should suffice
You’d need quite a hefty transformer though, that could supply 7 amps …
One thing that seems strange is that cinchet says ‘my lcd gets darker’ and ‘5v rises to 5.4v’, I would believe the rise of the 5V line should make the backlight lighter, not darker
how did you in-cooperate the LED bar graph into the system?
do you have the circuit for that?
how did you in-cooperate the LED bar graph into the system?
do you have the circuit for that?
http://ucapps.de/midibox_lc/midibox_lc_ledrings_meters.pdf
Greets, Roger
http://ucapps.de/midibox_lc/midibox_lc_ledrings_meters.pdf
Greets, Roger
Wow! Thats great.Thanks a lot.i also got more info from this website.might help others…maybe!