Instruction Guide 2 times i2c oled display

[How to do instruction] 2 times i2c oled display - Printable Version

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2 times i2c oled display - DRONE7 - 02-06-2021

This is prompted from a request here... Smile

http://moodeaudio.org/forum/showthread.php?tid=818&pid=29933#pid29933

Two oled displays...different i2c address by changing the solder bridge on one....Google that for a how-to.
Use them paralleled and with the Pi 5-volt dropped to their required 3.3-volt with a cheap Ams1117.
https://www.ebay.co.uk/itm/AMS1117-LDO-DC-5V-to-3-3V-Step-Down-Buck-Converter-Regulator-800mA-Module/333781070289?hash=item4db6e6f1d1:g:tksAAOSwsaxfppOP

Set up the first oled as per Adrian's superb MoOde instructions...
https://github.com/antiprism/mpd_oled/blob/master/doc/install_moode7_deb.md

Use the default un-modified i2c address (probably 3c) for the mpd.oled file

Code:
mpd_oled -o 6 -a 3c -b 10 -g 1 -f 20

and once you have that confirmed running and a second oled (with the bridge) now showing it as 3d connected then install this version (stats.py) (from the original here, modified for MoOde... David-Ka / Pi_stats_OLED)

Instruction...
Connect to your Pi via SSH

(Most of the dependencies are already present in MoOde 7.01 and will say that you have the most up to date version already but no problem to try and check)
---
Install some dependencies for the library

Code:
sudo apt-get install build-essential python-dev python-pip

Install the RPI.GPIO library

Code:
sudo pip install RPi.GPIO

Install the Python Imaging Library (Note- replaced by python-pil) and smbus library

Code:
sudo apt-get install python-pil python-smbus

Install git

Code:
sudo apt-get install git

Clone the Adafruit SSD1306 python library

Code:
git clone https://github.com/adafruit/Adafruit_Python_SSD1306.git

Go to the cloned repository

Code:
cd Adafruit_Python_SSD1306

and execute ...

Code:
sudo python setup.py install

reboot!!

Connect to your Pi via SSH
Clone this repository.

Code:
git clone https://github.com/David-Ka/Pi_stats_OLED

check the i2c address of your oleds (the un-modified would be usually default 3c and the modified 3d

(Booting and checking with only one at a time oled connected would give the information needed.)
example of both i2c oleds connected..

Code:
pi@moode:~ $ sudo i2cdetect -y 1

     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f

         -- -- -- -- -- -- -- -- -- -- -- -- -- 

-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 

-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 

-- -- -- -- -- -- -- -- -- -- -- -- 3c 3d -- -- 

-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 

-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 

-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 

-- -- -- -- -- -- -- --

then..

Code:
cd Pi_stats_OLED

and run..

Code:
sudo nano stats.py

and modify this line to show the i2c address of the 2nd oled

Code:
# 128x64 display with hardware I2C:

disp = Adafruit_SSD1306.SSD1306_128_64(rst=RST, i2c_address=0x3d)

save and reboot.

Connect to your Pi via SSH
then..

Code:
cd Pi_stats_OLED

and

Code:
sudo python stats.py

should produce useful output as shown in the attached image. (Ctrl+c to halt)

If all is well and both displays work then to add the second oled to run at boot..

Code:
cd Pi_stats_OLED

give permissions to execute.

Code:
chmod 755 launcher.sh

Then edit rc.local

Code:
sudo nano /etc/rc.local

and add this line just before 'exit 0'

Code:
/home/pi/Pi_stats_OLED/launcher.sh &

save and restart.

RE: 2 times i2c oled display - KmPan - 02-06-2021

THANK YOU@DRONE7

Looking forward for more mods like this with moode.

RE: 2 times i2c oled display - the_bertrum - 02-08-2021

Is that "her majesty" I see in the background?

RE: 2 times i2c oled display - TheOldPresbyope - 02-08-2021

(02-08-2021, 04:05 PM)the_bertrum Wrote: Is that "her majesty" I see in the background?

She's a pretty nice girl!

RE: 2 times i2c oled display - DRONE7 - 02-08-2021

I'm stunned and amazed that such a partial fuzzy glimpse of Liz is recognised by the_bertrum.... yes, quite correct...she was possibly even waving ;-)

RE: 2 times i2c oled display - the_bertrum - 02-09-2021

Something about the way she was holding her bag...