Essential scrap website provide information about power driving of theses screen, but I was more interested in the signal driving, so I choose to use the TI TPS65185 IC http://www.ti.com/product/TPS65185 which manage everything (special thanks to @Arthur Admiraal for his design https://hackaday.io/project/7153-squidpad which I partially reused).

I used ICE40 because of the open-source toolchain available http://www.clifford.at/icestorm/

The memory permit to include a framebuffer, my Verilog implement a small SPI interface to communicate with the controller.

To simplify the development, I finally created my own little tool https://hackaday.io/project/14864-ifusb

The board is specificaly made for Kindle 3 display (ED060SC7), but should works with some other display from this generation (ED060SCE found in Kobo) which are 6″ 800×600 16 colors.

Hardest part was to implement “waveform” which permit to make smooth and fast transition between screen refresh.

In the Kindle 3 screen, the waveform is actually integrated into an SPI flash in the ribbon cable. In others e-reader, this can generaly be found in the firmware. E-Ink (PVI) created his own format, supported by custom controller, and some dedicated Epson chip. I think these controllers are obsoleted since CPU manufacturers does integrate the controller directly. Actually the main (only?) manufacturer which provide CPU supporting eink screen is Freescale (imx6 solo) and they created their format as well.

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