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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)

skvark 2014-01-12 19:23
Re: Jolla OtherHalf OLED display
 
Quote:
Originally Posted by kimmoli (Post 1405861)
Hmm, the PLA can have about 0.3 to 1% shrinkage, which my explain tightness in the long direction.
But i re-measured, and it seems that the model has small error too.

From the model: inner length = 127.34079 measured from print 127.2
phone 127.75

inner width = 65.443081 measured from print 65.3
phone 65.0

I just ordered some Premium PLA 90 from Orbi-tech. Lets see is it any better, color selection is poor for 1.75mm (3mm better)

I think i have asked, but what cad do you use? possible to share originals under DWTFYWT-license ? or just for me, i'll buy you a beer or ES :)
Yes, there's is a small error in model but not so big as that comment in GitHub indicates. I measured the dimensions with a simple ruler and made some scaling afterwards so there's definetely small errors (+-0.5mm) + PLA shrinks a little.

I modeled the model originally with Autodesk 123D Design: https://www.123dapp.com/design
The .iges and .step can be found from here: http://relativity.fi/jolla_toh/3dmodels/ (I'll add the DWTFYWT-license). Those were converted with FreeCAD from .stl back to solid models. I can of course provide the 123D Design file too if needed.

kimmoli 2014-01-12 19:27
Re: Jolla OtherHalf OLED display
 
1 Attachment(s)
Quote:
Originally Posted by skvark (Post 1405912)
Those were converted with FreeCAD from .stl back to solid models. .
oooh there is mi problem.
The triangular STL is almost impossible to edit... this has now been gone to the STEP file too... I'm just heating my printer up.

EDIT: Previous stl was crap. this should be better.

kimmoli 2014-01-12 20:11
Re: Jolla OtherHalf OLED display
 
2 Attachment(s)
For the proto, getting 1.3mm slimmer...

kimmoli 2014-01-12 20:40
Re: Jolla OtherHalf OLED display
 
5 Attachment(s)
Print finished.
Have to move the power switch opening a little, and add a smal notch to the bottom edge

Akkumaru 2014-01-12 23:06
Like the icon on the other half :D
Derp

kimmoli 2014-01-13 01:15
Re: Jolla OtherHalf OLED display
 
1 Attachment(s)
Attached is the tuned STL of OH outer frame.
Just add your own stuf on top of it...

minimos 2014-01-13 07:01
Re: Jolla OtherHalf OLED display
 
Quote:
Originally Posted by kimmoli (Post 1406008)
Attached is the tuned STL of OH outer frame.
Just add your own stuf on top of it...
I looked at the frame with Netfabb Basic, and it marked the part as 'damaged'.
It seems something weird about the four corners...

phenoboy 2014-01-13 07:20
Re: Jolla OtherHalf OLED display
 
Very interesting project.

I'd like to add serial port (UART RX/TX pins at least) capability to Jolla with I2C.

Are there I2C to UART converters that could do this ?

nieldk 2014-01-13 08:19
Re: Jolla OtherHalf OLED display
 
Quote:
Originally Posted by phenoboy (Post 1406032)
Very interesting project.

I'd like to add serial port (UART RX/TX pins at least) capability to Jolla with I2C.

Are there I2C to UART converters that could do this ?
http://www.nxp.com/products/interfac...dges/#products

kimmoli 2014-01-13 08:43
Re: Jolla OtherHalf OLED display
 
2 Attachment(s)
I have given some toughts to this already...

Quote:
Originally Posted by nieldk (Post 1406038)
--> either SC16IS750. Has 3.3V operation, but you'll need I2C levelconverter (e.g. PCA9517) and 1.8V regulator. Easier to interface to the 232 transceiver.

--> or SC16IS850L. Has 1.8V operation, no need for I2C level converter, but needs 1.8V regulator. and some tricks to interface to 232 transceiver.


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