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Contrast pot - not any more
Posted:
Thu Jun 19, 2008 10:36 pmby dmitri
Check the latest MegaDrum firmware.
and the changes to the LCD module schematic (minus a pot, plus a resistor and a capacitor):
and in hires:
http://www.megadrum.info/img/megadrumlcd.png
Re: Contrast pot - not any more
Posted:
Thu Jun 19, 2008 10:57 pmby Synthex
Very cool feature !
Re: Contrast pot - not any more
Posted:
Fri Jun 20, 2008 2:00 amby andrex289
Great!... When megadrum would become a drum module with build in sounds too????
Re: Contrast pot - not any more
Posted:
Fri Jun 20, 2008 6:41 amby Synthex
andrex289 wrote:Great!... When megadrum would become a drum module with build in sounds too????
I think never ...
Re: Contrast pot - not any more
Posted:
Fri Jun 20, 2008 10:30 amby elrules
Does this mean that I must not use a pot with the new firmware? If I use a pot, will the LCD work the same way as if I replace it with a resistor-capacitor?
Re: Contrast pot - not any more
Posted:
Fri Jun 20, 2008 11:01 amby dmitri
It will work just the same
Re: Contrast pot - not any more
Posted:
Fri Jun 20, 2008 12:12 pmby Synthex
elrules wrote:Does this mean that I must not use a pot with the new firmware? If I use a pot, will the LCD work the same way as if I replace it with a resistor-capacitor?
With the new firmware, you can use a pot or a resistor-capacitor. As you wish.
Re: Contrast pot - not any more
Posted:
Fri Jun 20, 2008 2:20 pmby Synthex
Dmitri, are you sure that this craftiness works with all LCDs ?
Because you play with the duty cycle of the signal of bit7.
Do you change the duty cycle only when the LCD is not enable ?
Re: Contrast pot - not any more
Posted:
Fri Jun 20, 2008 6:56 pmby dmitri
Yes, I'm sure it will work with all LCDs with positive contrast bias.
