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Topic: does shiftreglcd work with a backlit lcd (Read 824 times) previous topic - next topic

SouthernAtHeart

This looks great!  Seems that with 1 chip I can use 2 pins instead of 6. 

http://code.google.com/p/arduinoshiftreglcd/


Does it work with this LCD?  Will the backlight be turned on?  I don't need control to turn it on/off, just so it'll be on if I use the shiftreg.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=150559228086#ht_2942wt_759

floresta

#1
Feb 10, 2011, 05:47 am Last Edit: Feb 10, 2011, 05:48 am by floresta Reason: 1
The LCD displays using the original Hitachi HD44780 controller and all of its derivatives use the same 14-pin interface.  I can't think of any reason why this, or any other hardware/software combination written for this Hitachi interface, will not work with your display.  You will have to deal with the backlight separately, and it may require more wires, but unless you want the backlight to be under software control you won't need to use any additional Arduino pins.

Don

SouthernAtHeart


The LCD displays using the original Hitachi HD44780 controller and all of its derivatives use the same 14-pin interface.  I can't think of any reason why this, or any other hardware/software combination written for this Hitachi interface will not work with your display.  You will have to deal with the backlight separately, and it may require more wires, but unless you want it to be under software control you won't need to use any additional Arduino pins.

Don


Thanks!

Grumpy_Mike

Be aware that the back light might / probably will need a small resistor in line to keep the current in check.

SouthernAtHeart


Be aware that the back light might / probably will need a small resistor in line to keep the current in check.
1K ?
I can check the mA, what is the typical current or resistor size used on these?  It's just a common 16x2 coming from Hong Kong.

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