PROJECTS: DIY E-Paper E-Reader
and solder them in place from the back.
Then insert the through-hole slide switch
from the back of the device, and solder it in
place from the front.
Finally, thread the screen’s flex cable through
the hole one last time. Insert it into the 24-pin
connector, and secure it in place. Using double-
sided tape, secure the screen to the front of the
PCB. Congratulations, your board is assembled
(Figure
Z
)!
8. BURN THE BABEL FLASH CHIP
The secondary flash chip on the E-Book
FeatherWing is dedicated to font and language
support, but it currently doesn’t have any data
on it. When you downloaded the Babel library,
you also downloaded a two-megabyte BLOB file
containing information about how to display all
the world’s languages. We’re going to copy that
blob to the microSD card, and then run a sketch
to burn that image to the flash chip.
Locate the babel.bin file; it’s in the babelconvert
folder inside the Babel library you downloaded
(Figure
Aa
). Copy babel.bin to your microSD card,
and eject the drive. Then plug the microSD card
into the socket on the E-Book FeatherWing.
Run the BurnBabelBurn sketch from the Babel
examples, open the Serial Monitor, and follow
the instructions to burn the font data to the chip
(Figure
Bb
).
If the image verifies, you’re done! You can
delete the babel.bin file from the SD card; the
Babel chip will retain this data indefinitely.
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Z
Aa
Bb
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