18650 Battery Pack Cell Insulating Pads, 18650 Li-ion Battery Insulation Gasket USD 0.80-0.99 /piece ESP32 Backplane Compatible with WROOM-32U WROVER Module, WiFi Module with 2.4G Antenna, Optional Development Board USD 4.94 /piece High Quality LCR-T4 ESR Meter, Transistor Tester, Diode, Triode, Capacitance, SCR, Inductance USD 4.94 /piece D1 Mini ESP32 ESP-32 WiFi+Bluetooth-Compatible Internet of Things Development Board Based on ESP8266 USD 3.44-3.59 /piece New Arrival! DC-ATX 120W Durable Board, DC-ATX Power Module Accessories, Computer Parts, High Power Supply Tool, Input 16-27V, 24 Pin USD 10.42 /piece NodeMcu V3 Wireless Module CH340 V2 Lua Based on ESP8266 ESP-12E WIFI IoT Development Board, Type-C Acrylic Shell Optional USD 2.00-2.28 /piece ESP32 Development Board WiFi and Bluetooth, ESP32 Type-C Acrylic Case Available for Selection USD 2.16-3.85 /piece ESP32 ESP-32 REV1 Type-C/Micro USB Lithium Battery Interface, WiFi Bluetooth Development Board, CH340 CH340G, MicroPython USD 4.39 /piece ESP32-WROOM-32U WROVER Module, WiFi Module with 2.4G Antenna, Optional ESP32 Development Board WROOM-32U Size: 48.1 x 27.8mm ESP32 DevKitC is an entry-level ESP32 development board. The ESP32 pins are broken out for easy connection and use. It can be used to evaluate all ESP32 modules and chips, and can be easily inserted into a breadboard. Packaging Includes: (as selected) 1 x WROOM-32U Development Board Or 1 x Antenna Or 1 x WROOM-32U + Antenna