Introduction：

2.7inch E-Paper board consisting of ESP32-D0WDQ6, I2S DAC MAX98357A, and one pcs I2S MEMS microphone ICS43434Single channel, Class-D amplifier embedded DAC, MAX98357 is connected to ESP32 through I2S bus.

MEMS microphone Invensense ICS-43434 is connected to ESP32 through I2S bus.
On-board USB-UART interface (CP2102) with several glue logic for direct binary uploading.

Features：

Lastest ESP32 Version: REV1
WIFI
Bluetooth
4 MB Flash
TF-CARD
3D ANTENNA
500mA Battery Management
LED indicator: There are 4 LEDs show the battery status in real time.
Power button: Click one time will start. Fast click 2 times will shut down.
2.7″ E-Paper module 264*176 Pixels

Protection:

Short protection.
Over charging protection.
Overflowing.
Button changed (IO37, IO38, IO39)

Part Number	Colors	Grey Level	Resolution	Display size (mm)	Outline Dimension (mm)	Full Refresh Time (s)	Partial Refresh Time (s)
2.7inch E-Paper	Black, White	2	264x176	57.29 × 38.19	70.4 × 45.8	6	N/A