Description:

1. The main control chip using ESP-WROOM-32, Tensilica LX6 dual core processor, clocked at 240MHz,
computing capacity of up to 600DMIPS, 520 SRAM, 802.11 KB chip b/g/n HT40 Wi-Fi transceiver, baseband,
and LWIP protocol stack, Bluetooth (Bluetooth dual-mode integrated traditional and BLE low-power Bluetooth).
2. On-board 4 Mt bytes (32 Mt bit) , Flash, and Wi-Fi antennas.
3. 0.96 inch White OLED display.
4. Lithium battery charging circuit and interface,
5. CP2102 USB to serial chip, perfect support for Arduino development environment

Note:

Increase I2C expansion port with lithium battery charging and discharging function, easy to add GY module,
such as GY21, BME280, can be powered by 3.7V lithium battery.
This product does not include the battery.