LCD 40x2 Help : RPi2 + I2C 40x2 LCD + XMOS DAC

newruneuser

Hi Guys,

After using the search function on google and this forum for multiple weeks now, i can't get my LCD to work. I followed multiple guides online (even a google translated korean one!). I hit and read all search results from https://www.google.nl/webhp#q=runeaudio+i2c+lcd. The guides do not are outdated, work for a different RPi version, or have an other reason for not working on my installation

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I've installed RuneAudio and it works fine on a fixed ip in the network. I use a 40x2 hd44780-based lcd display (http://www.buydisplay.com/default/4002-40x2-character-lcd-display-module-hd44780-white-on-black), connected to an i2c backpack(https://www.hobbyelectronica.nl/product/i2c-lcd-interface-voor-16x2-en-20x4-displays/). I can successfully use some of the python lcd examples to print text to the display on a previous installation, so all hardware works. I do not understand why this functionality isn't slipstreamed into the base installation-image.

If someone could point me in the right direction i would be very thankful!

bill6300gp

Dear newruneuser,

Maybe you should confirm whether "import smbus" is work or not.
In my case, I must type some commands to install i2c-tools.
After installing i2c-tools, I can import smbus library to control Character LCD via I2C.

If you want to know what are the commands to install i2c-tools, please see Appendix-1 in the README.md on my github repository : https://github.com/bill6300gp/RaspberryPi-MPD-CharDisplay
(Because the main python script of repository do not finish yet, the repository can't work now. But you can refer Appendix-1 to install i2c-tools)

Sincerely,
bill6300gp