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EPD Source codes and Documentation
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Image Format: 1-bit vs 4-bit #14

Closed rknapp31 closed 10 years ago

rknapp31 commented 10 years ago

I am exploring E-paper using the Arduino Uno, and the TI Booster Pack. It has been fantastically easy to display images using these tools and the open source code. However I would like to show 4-bit format images (16 shade grayscale) rather than 1-bit format images (black or white). can anyone help me understand if this format limitation is in the hardware or in the code, and what can be done to change this limitation?

moskovich commented 10 years ago

The display will only support 1-bit. This is a hardware limitation.

rknapp31 commented 10 years ago

Initially I used the Pervasive Display EPD that came with the TI Booster Pack to display the 1-bit images. The application I am developing will use the E-Ink EPD (ETO17QC1) which is capable of displaying 4-bit images. I would like to use the Arduino Uno and the TI Booster Pack to evaluate the ETO17QC1 using 4-bit images. I'm curious if this is a simple change in color depth setting in the code or if this requires a hardware modification beyond the display.

moskovich commented 10 years ago

Things are very different in the E Ink world (not like LCMs).

It would not be a simple change. Each display is unique in how it's controlled. The timing sequence to control display (called the waveform) is not going to translate to different chips, even from the same vendor.