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lib/epdiy/doc/source/tips.rst

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+
+Tips & Tricks
+=============
+
+
+Temperature Dependence
+----------------------
+
+The display refresh speed depends on the environmental temperature.
+Thus, if your room temperature is significantly different from ~22°C, grayscale
+accuracy might be affected when using the builtin waveform.
+This can be mitigated by using a different timing curve, but this would require calibrating the display timings at that temperature.
+If you did this for some temperature other than room temperature, please submit a pull request!
+
+Deep Sleep Current
+------------------
+
+Board Revision V5 is optimized for running from a battery thanks to its low deep sleep current consumption. 
+In order to achieve the lowest possible deep sleep current, call
+::
+
+    epd_deinit()
+
+before going to deep sleep. This will de-initialize the I2S peripheral used to drive the diplay and bring the pins used by epdiy to a low-power state.
+You should be able to achieve a deep-sleep current of less than 13µA.
+If your deep-sleep current is much higher, please check your attached peripherals.
+With some modules, you have to isolate GPIO 12 before going to deep sleep:
+::
+
+    rtc_gpio_isolate(GPIO_NUM_12)
+
+Adding a New Display
+--------------------
+
+This section is work-in-progress.
+
+- Add display definitions in :code:`displays.c` and :code:`epd_display.h`.
+- Include waveform in :code:`bulitin_waveforms.c`
+- Calibrate timing curve in :code:`scripts/generate_epdiy_waveforms.py`.
+- Add to the list of displays to build waveforms for in :code:`Makefile`
+- Document