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maemo.org - Talk (https://talk.maemo.org/index.php)
-   The Other Half (https://talk.maemo.org/forumdisplay.php?f=59)
-   -   Jolla OtherHalf OLED display / toholed (https://talk.maemo.org/showthread.php?t=92239)

kimmoli 2014-01-05 11:39
Re: Jolla OtherHalf OLED display
 
Quote:
Originally Posted by minimos (Post 1402962)
Nice!
Q1: How the thickness, do you need some extra mm to accomodate the screen?
Yep. The OLED glass is about 1.6 mm thick, and PCB is 0.8 mm
I have to check what components i need on the board. atm i expect about 2mm increase in thickness.

Quote:
Originally Posted by minimos (Post 1402962)
Q2: Do you have still the display connected to the i2c contacts with wires & scotchtape, or did you use some springy removable contacts?
They are with scotch tape/wire still...
I made a custom pcb that has matching pads for the phone pogo-pins (pins on the phone side have the springythingy)
Pic of first version of board...
https://lh4.googleusercontent.com/-w...toh-bottom.png

Dave999 2014-01-05 12:11
Re: Jolla OtherHalf OLED display
 
What material did you use for that cover? How did you connect it to the Device.?

Cool **** Indeed!

minimos 2014-01-05 13:11
Re: Jolla OtherHalf OLED display
 
Quote:
Originally Posted by kimmoli (Post 1403943)
I made a custom pcb that has matching pads for the phone pogo-pins (pins on the phone side have the springythingy)
Good point. I did not try (yet!) to prod the pins on the phone side, as I thought they were fixed, but they are indeed pogo-pins! Now the price of the Jolla is getting justified :p

kimmoli 2014-01-05 19:46
Re: Jolla OtherHalf OLED display
 
Some progress in sw side too...

Code:
[root@localhost system]# systemctl status toholed.service
toholed.service - The Other Half OLED
          Loaded: loaded (/etc/systemd/system/toholed.service; disabled)
          Active: active (running) since Sun, 05 Jan 2014 21:36:23 +0200; 7min ago
        Main PID: 2877 (toholed)
          CGroup: name=systemd:/system/toholed.service
                  └ 2877 /home/nemo/test/toholed

kimmoli 2014-01-06 23:26
Re: Jolla OtherHalf OLED display
 
Update.

SW
I have now achieved writing a service/daemon which is on D-Bus systemBus, and managed to configure policies so that it can own a name and be communicated with. Also configured systemd to start it at boot.

Now i can access the rear I2C bus and V33 output through D-Bus from normal application without starting it as root.

HW
I think i will do board as FPC - then i can keep height in minimum.
Thickess increase should be ~1.5mm, which is thickness of OLED glass.

HtheB 2014-01-07 00:21
Re: Jolla OtherHalf OLED display
 
what about battery life?

kimmoli 2014-01-07 18:07
Re: Jolla OtherHalf OLED display
 
Quote:
Originally Posted by HtheB (Post 1404409)
what about battery life?
No update on that yet...

kimmoli 2014-01-08 01:40
Re: Jolla OtherHalf OLED display
 
Help...Hjälp...Apua...

Can someone dig/hack/design/suggest me a font to show big time on the screen? There is space of 128x48 pixels.
Numbers 0..9 and : needed. Preferably fixed width of ~28 pixels, 16 px for : .

Height max 48. (Width adjusted to what looks nice)

something like this:

23:56
28+28+16+28+28

in 32-bit hex words arranged to table, right aligned (leftmost 4 msb bits wasted.) one word/pixel row of character.

There is 128x16 free space below, but i think there could be notification icons tjsp,

Silwer 2014-01-08 06:13
Re: Jolla OtherHalf OLED display
 
I do not know what font is used on N9, but that looks good.

herdem09 2014-01-08 06:37
Re: Jolla OtherHalf OLED display
 
I can suggest using fixed-width fonts. Otherwise arranging spaces between characters might be problematic.

For example with fixed-width courier new font:
http://imgim.com/5054incii7716653.jpg


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