cinhcet Posted May 25, 2009 Author Report Share Posted May 25, 2009 mhh, but why is the 5V affected?(LCDs get darker and somtimes the wohle core reboot) Quote Link to comment Share on other sites More sharing options...
Lorcan Posted May 25, 2009 Report Share Posted May 25, 2009 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) Quote Link to comment Share on other sites More sharing options...
Screaming_Rabbit Posted May 26, 2009 Report Share Posted May 26, 2009 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, RogerPS: But I still think that this is not really the problem of your Box' behaviour. Quote Link to comment Share on other sites More sharing options...
Lorcan Posted May 26, 2009 Report Share Posted May 26, 2009 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 sufficeYou'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 Quote Link to comment Share on other sites More sharing options...
bwanatikh Posted September 8, 2010 Report Share Posted September 8, 2010 (edited) 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 Quote Link to comment Share on other sites More sharing options...
Screaming_Rabbit Posted September 8, 2010 Report Share Posted September 8, 2010 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 Quote Link to comment Share on other sites More sharing options...
bwanatikh Posted September 9, 2010 Report Share Posted September 9, 2010 (edited) 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 Quote Link to comment Share on other sites More sharing options...
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