1) What do you need an RGB back light for?
2) Where do you get one for a better price?
BTW, it seems sparkfun screwed up by ordering some common-cathode displays, not pin-compatible with regular LCDs on the part that pin 15 is A pin 16 is K (sparkfun's has pin 15 K and pin 16 A)
Ebay is disappointing. No hit for "character lcd rgb":http://www.ebay.com/sch/i.html?_from=R40&_trksid=p5197.m570.l1313&_nkw=character+lcd+rgb&_sacat=See-All-CategoriesIf you try "character lcd", there's too many hits to sift through.
I'm thinking of using this RGB display for my serial panel but that means I won't be able to reserve the I2C pins for future I2C interface since two more LEDs need two more pins.
What about the chinese wholesale sites like alibaba ? I looked but did not spend much time at it. They may have some.
@dc42, I have not thought about that. So do you mean maybe using the 4 LCD data pins to drive the columns of the matrix keypad? Should be doable without much modification of my original code, right? I don't sense the keypad and update LCD at the same time.
I haven't thought about using diodes. So are they there to isolate what happens on the LCD pins from the keypad or are they isolating what the keypad does from the LCD? I know that the LCD could write on the data pins but I don't think I need the LCD to do that. I have a display buffer on the arduino.
This any good?http://www.ebay.co.uk/itm/ART-New-LCD-2x16-F-LED-b-l-RGB-HD44780-H-30mm-ABC016002F00-MIRGB-R-/320795737775?pt=LH_DefaultDomain_212&hash=item4ab0ea7eaf#ht_754wt_952Price is very cheap!
Please enter a valid email to subscribe
We need to confirm your email address.
To complete the subscription, please click the link in the
email we just sent you.
Thank you for subscribing!
via Egeo 16