Micro USB interface with a complete voltage regulator, ESD protection, short circuit protection, RF shielding, and other protection measures;
Onboard SH1.25-2 battery interface, integrated lithium battery management system (charge and discharge management, overcharge protection, battery power detection, USB / battery power automatic switching);
Onboard 2.4GHz (for Wi-Fi) PCB antenna;
Onboard 0.91-inch 128*32 dot matrix OLED display, which can be used to display debugging information, battery power and other information;
Integrated CP2104 [ https://docs.heltec.cn/#/en/user_manual/establish_serial_connection ] USB to serial port chip, convenient for program downloading, debugging information printing;
Compatible with the Arduino development environment[ https://docs.heltec.cn/#/en/user_manual/how_to_install_esp8266_Arduino ].
WIFI Kit 8 is a cost-effective Internet of things development program , the main chip using ESP8266, with CP2014 USB to serial chip, lithium battery interface and charge and discharge circuit, 32M Byte Flash, WIFI antenna, 0.91-inch OLED display.
It can be programmed in Arduino and NodeMCU environments.
1 * ESP8266 development board with OLED
2 * Pin headers