Cheap I2C LCD module

[boriz]

http://www.ebay.co.uk/itm/Serial-IIC-I2C-TWI-SPI-Character-LCD-Module-Display-LCM-1602-162-Arduino-/200876328591?_trksid=p2047675.m1851&_trkparms=aid=222002&algo=SIC.FIT&ao=1&asc=14513&meid=6054233483749472316&pid=100005&prg=1048&rk=3&sd=170999454850&

Datasheet: www.divshare.com/direct/22211782-d6d.pdf

 

[lbenson]

Got one similar and abandoned it because it was very much not straightforward. No sending a position code and then a string of characters--it dealt in half-bytes and to me, over-complicated commands. There's an Arduino library, so it can be plug and play for that device, but not for PICAXE.

If someone wants to code up a PICAXE routine to manage it, I'll break mine out again.

This device may be more simple, but I couldn't tell with a brief look at the datasheet.

 

[nick12ab]

Based on the datasheet for this display, you first send a command byte where you specify whether you'll be sending a data or instruction byte afterwards + whether after that data/instruction byte you'll be sending another command byte or you'll just continue to send data/instruction bytes. The data/instruction commands are the same as on HD44780-compatible LCDs.

Example:
hi2cout ($80,128,$40,"LCD LINE ONE")

This display is not like the ones that simply use an i2c port expander.