Thread: Jolla OtherHalf OLED display / toholed
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kimmoli is offline kimmoli
2014-01-01 , 19:55
Posts: 562 | Thanked: 2,744 times | Joined on Dec 2013 @ Espoo, Finland
#1
SOLD OUT


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Short video at Youtube

Latest pictures, click here



The OLED display is mono gray-white'ish (not blue as seen on some photos)
Size of the display is 0.96" with resolution of 128x64

It has proximity sensor to switch it off when TOH facing down or in your pocket. (has also ambient light sensor which might be used to control brightness (dimm when dark) )

It is controlled by daemon (systemd service) which is installed automatically from Jolla Store like ambience.


Thank you to you all for being so supportive on this project!





Kimmoli



(As already started in http://talk.maemo.org/showpost.php?p...&postcount=232 moved to own thread)

Hooked up an OLED display to Jolla

my I2C probe shows green at 0x3C:


Modified my app a little


and sent some text on the display


And with some more coding, i'm now at this point: watch in Youtube

The display is this here: datasheet
e.g. from Aliexpress

(ordered some bare white ones for the final prototype)

Modified the display by removing the 3.0V regulator, replaced it with silly resistor divider to generate 1.8V logic supply (needed because I2C is 1.8V)

Interface uses ioctl to talk over i2c
Code:
file=open( "/dev/i2c-1", O_RDWR )
ioctl( file, I2C_SLAVE, 0x3c)
write(file, buf, len)
Last edited by kimmoli; 2015-06-01 at 11:10.
 

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