ESP32-WROOM with 4MB Flash (external Antenna connector)

ON/OFF button type switch 

Bluetooth Module，Wifi Module

2Electric Soldering Iron Cleaning Sponge

900M-T Lead Free Solder Iron Tips for Soldering/ReWork Station

Note: NODEMCU V3 WiFi module integration of ESP8266 + extra 32Mb  Flash, USB serial, CH340G - Type 1 / CP2102 - Type 2. 

5mm LED Red light emitting diode, 5 LEDs per pack

Working current: 20 (mA)

Working voltage: 1.9V-2.4V

1.25V - 37V Output @ 3A DC-DC 3-40V Input Step Down Adjustable Power Supply 3A peek power, 2A constant current.

An ultrasonic distance sensor for more rugged applications with...