My LC, nearly finished

[cinhcet]

mhh, but why is the 5V affected?(LCDs get darker and somtimes the wohle core reboot)

[Lorcan]

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)

[Screaming_Rabbit]

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.

[Lorcan]

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

[bwanatikh]

how did you in-cooperate the LED bar graph into the system?

do you have the circuit for that?

Edited September 8, 2010 by bwanatikh

[Screaming_Rabbit]

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

[bwanatikh]

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!

http://www.mbeckler.org/microcontrollers/led_bargraph/

Edited September 9, 2010 by bwanatikh