E-Ink
R3
Resistance
1kΩ
R1
Resistance
10kΩ
+3V3
+3V3
+3V3
+3V3
SW1
E_INK_SDI
E_INK_CS
E_INK_DC
E_INK_SDI
ESP1
E_INK_BUSY
E_INK_DC
SWITCH
E_INK_CLK
E_INK_BUSY
E_INK_CS
C2
Capacitance
0.001uF
SWITCH
E_INK_CLK
U1
End of Life