[chbot] Blue HD44780 LCDs

[Chris Hellyar]

Yes, if it's a cheap job off ebay etc..
 
I got a few a while ago for prototyping, never again..  They also seem to have a lot smaller viewing angle range?
 
 
-----Original Message-----
From: "Robin Gilks" <robin at gilks.org>
Sent: Sunday, 9 August, 2015 14:10
To: "Christchurch Robotics" <chchrobotics at lists.linuxnut.co.nz>
Subject: [chbot] Blue HD44780 LCDs



Greetings all

I've only ever used green and yellow HD44780 style character mode LCDs and
they have had a backlight (which draws a LOT of current) but been
perfectly readable without the backlight being on.

I'm now playing with a blue one and the backlight has to be on to read it
- is this normal for blue LCDs ?

I haven't checked the current yet (rebuilding alpha hardware into beta
stage prototype) but I'm guessing its quite low since modern blue LEDs
seem to be very efficient.

Cheers

-- 
Robin Gilks



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