FORUMS
Remove All Ads from XDA

Sony Ericsson MBW-150 OLED repairs

488 posts
Thanks Meter: 52
 
By netstat_EVO, Senior Member on 29th March 2011, 06:28 PM
Post Reply Email Thread
6th August 2019, 01:25 AM |#361  
CornholioGSM's Avatar
Senior Member
Flag Prague
Thanks Meter: 298
 
Donate to Me
More
Hello, dou you know which communicating interface is used on these mbw watches? SSD1300 can use Parallel and SPI interface, SSD1303 (tested by me in mbw150 - picture was mirrored) use SPI/Parallel/i2C and SSD1306 interfaces are same as on 1303. New displays 96x16 uses ssd1306 with limited pinouts only to i2c.

Inside MBW-XXX watches is same ic - Philips/NXP BGB203xxxxx. This ic use for communicating I2C...BUT original display with 1300 does not have I2C...so how is it possible?
OR can be this original be connected via GPIO?
The Following User Says Thank You to CornholioGSM For This Useful Post: [ View ] Gift CornholioGSM Ad-Free
13th August 2019, 10:49 PM |#362  
CornholioGSM's Avatar
Senior Member
Flag Prague
Thanks Meter: 298
 
Donate to Me
More
...this is interesting. I have found wiring diagram of original Ritdi display with SSD1300. It looks like it is really connected via i2c...BUT again after measuring on mbw-150 mainboard are both data ways connected to GPIO pins of bgb203 and not to i2c.

It is hard...i will risk it and i will test to connect chinese display directly with wires
Attached Thumbnails
Click image for larger version

Name:	Pinbelegung.PNG
Views:	60
Size:	70.8 KB
ID:	4805657  
The Following User Says Thank You to CornholioGSM For This Useful Post: [ View ] Gift CornholioGSM Ad-Free
23rd August 2019, 07:48 PM |#363  
CornholioGSM's Avatar
Senior Member
Flag Prague
Thanks Meter: 298
 
Donate to Me
More
edit...power source for new lcd done
Attached Thumbnails
Click image for larger version

Name:	download_20190823_203201.jpg
Views:	56
Size:	263.9 KB
ID:	4809873  
The Following User Says Thank You to CornholioGSM For This Useful Post: [ View ] Gift CornholioGSM Ad-Free
20th September 2019, 10:06 PM |#364  
CornholioGSM's Avatar
Senior Member
Flag Prague
Thanks Meter: 298
 
Donate to Me
More
...some wiring and testing today.
Now i have connected Pictiva Oled with ssd1303.
This display is connected from another side so is needed some wiring, cutting and modding
I have tested it on mbw-150 and on mbw-100. On both i got picture.
On MBW-150 is picture mirrored...display glass is littlebit larger and is impossible to put in inside watch body.
On MBW-100 was needed to add capacitor between RST pin and ground. Picture is upside down and is littlebit shifted (approx 3-4pixels)...but inside watch body is space for it.

Soo is still needed to read and edit firmware from BGB203 IC. I know that this ic uses for communicating rs232...but i need help how to connect and read it
Attached Thumbnails
Click image for larger version

Name:	FJIMG_20190920_222532.jpg
Views:	36
Size:	264.0 KB
ID:	4823275   Click image for larger version

Name:	FJIMG_20190920_223054.jpg
Views:	50
Size:	254.8 KB
ID:	4823277  
Post Reply Subscribe to Thread

Tags
mbw-150, oled, sony sucks

Guest Quick Reply (no urls or BBcode)
Message:
Previous Thread Next Thread
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes