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Old 12-21-2016, 02:00 AM   #4
DNSB
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Join Date: Jul 2010
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Device: Kobo Sage, Libra Colour, Lenovo M8 FHD, Paperwhite 4, Tolino epos
Quote:
Originally Posted by CatRovacer View Post
Thanks for response.
Then if say by other words:
Which display prefferable: with -1.5V or -2.5V Vcom?
Neither is preferable based on Vcom -- you need to check the display speed, contrast, min/max reflectance, etc. The differences were not easily noticed when I played with Vcom values. Using the manufactured suggested value for the display is the safest route.

Quote:
Originally Posted by CatRovacer View Post
Also still question "How to read and/or rewrite Vcon for Kobo GLO?"
I've never dismantled a Glo to that extent. Depending on the chips used, changing Vcom may be simply changing a resistor value or it may require reprogramming a chip's internal EEPROM. Check the data sheets for the chips for more information.

The last time I played with eInk displays was about 4 years ago when I was trying to connect a Raspberry Pi to an eInk display so my information is likely to be outdated.

You might want to check Sprites mods Eink display and Essential Scrap - eInk for some ideas.

Last edited by DNSB; 12-21-2016 at 02:14 AM.
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