DFRobot FireBeetle ESP32-E Manual page 5

Type-c: USB Interface: 4.75v-5.5v
PH2.0 Li-ion Battery Connector: 3.5-4.2V
2/D9 LED: control LED via Pin 2/D9
Charging Indicator: red LED for indicating charging status: 1. Off when fully charged or not charged; 2. On when charging; 3. Quick flash
when powered by USB, and no battery connected.
RST Reset Pin: click the reset button to reset program
5/D8 WS2812 Indicator: control WS2812 RGB LED via pin 5/D8
Low Power Pad: This pad is specially designed for low power consumption. It is connected by default. You can cut off the thin wire in the
middle with a knife to disconnect it. After disconnection, the static power consumption can be reduced by 500 μA. The power consumption
can be reduced to 13 μA after controlling the maincontroller enter the sleep mode through the program. Note: when the pad is
disconnected, you can only drive RGB LED light via the USB Power supply.
GDI Display Interface: DFRobot dedicated display interface, details will be given later.
ESP32 Module: the newest ESP32-e module launched by ESPRESSIF
Button: control the button via pin 27/D4
6. Pinout