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Interfacing a 16 x 2 LCD with the Raspberry Pi @RaspberryPi #piday #raspberrypi

Mark Williams writes:

In this post I’ll show how to connect and use a 16 x 2 LCD on a Raspberry Pi.
The LCD I am using is a Blue Character OLED(LCD) 16×2 from adafruit.

This display has ultra-high contrast and any-angle readability. It has the best display I have seen on any LCD.

This LCD uses the HD44780 controller which is present in almost all LCDs.
LCDs that use this controller usually have 14 or 16 pins. This LCD has 16, numbered from 0 to 16 as shown below.

Sometimes these pins are present, but not used. Eg, pins 15 & 16 are for back-light and they are not used on this LCD. It depends on the manufacture.

Read the full tutorial with source code and more here.


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Blue Character OLED 16×2 – When you need low power, ultra-high contrast and any-angle readability, you can’t beat these great looking character OLEDs. They are pin/shape compatible with ‘standard’ HD44780 LCDs. The code is slightly different (they’re more timing sensitive) so we have our own Arduino library that plays better with the OLEDs than the standard LiquidCrystal library. (read more)


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