Robust LCD screen
hello,
following last forum topic on crashing lcd display due ac influence (see http://forum.arduino.cc/index.php?topic=167218.0), wondering if there hitachi hd44780 compatible lcd screens more robust (better shielded?) , less susceptible ac problems. until now, have used cheaper types purchased on ebay.
i hope exist.
cedric
following last forum topic on crashing lcd display due ac influence (see http://forum.arduino.cc/index.php?topic=167218.0), wondering if there hitachi hd44780 compatible lcd screens more robust (better shielded?) , less susceptible ac problems. until now, have used cheaper types purchased on ebay.
i hope exist.
cedric
i don't know if more robust displays available or not.
had similar problems project...
arduino plugged 12v dc wall power pack; project had sensors , relay board.
24v ac door bell plugged doorbell transformer controlled relay board.
24v dc solenoids wall power pack controlled relay board.
my project - sensors "sense" , program tells doorbell ring or solenoids fire.
on project, whenever doorbell rang, interfered sensors on arduino; starting vicious cycle.
everything got little wacky on arduino: display, sensors, relays, etc.
tried diodes - no help.
what worked me having on same cord. used 24v ac transformer (used 24v ac doorbell), converted 24v ac dc bridge rectifier , capacitors (used 24v dc solenoids). converted 24v dc 12v dc voltage regulator , capacitor (used 12v dc arduino). on 1 cord. feedback gone! not sure can project or if work you.
there web sites design own power supply have different filters , features. i'm not able tell how did see them in web surfing.
good luck.
had similar problems project...
arduino plugged 12v dc wall power pack; project had sensors , relay board.
24v ac door bell plugged doorbell transformer controlled relay board.
24v dc solenoids wall power pack controlled relay board.
my project - sensors "sense" , program tells doorbell ring or solenoids fire.
on project, whenever doorbell rang, interfered sensors on arduino; starting vicious cycle.
everything got little wacky on arduino: display, sensors, relays, etc.
tried diodes - no help.
what worked me having on same cord. used 24v ac transformer (used 24v ac doorbell), converted 24v ac dc bridge rectifier , capacitors (used 24v dc solenoids). converted 24v dc 12v dc voltage regulator , capacitor (used 12v dc arduino). on 1 cord. feedback gone! not sure can project or if work you.
there web sites design own power supply have different filters , features. i'm not able tell how did see them in web surfing.
good luck.
Arduino Forum > Using Arduino > Displays > Robust LCD screen
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