RGB LED - 1 watt Soldering Iron Bit tip The ESP-01 ESP8266 Serial WIFI

The ESP-01 ESP8266 Serial WIFI Wireless Transceiver Module is a self-contained SOC with an integrated TCP/IP protocol stack that can give any microcontroller access to your WiFi network

Ball Switch KY-020

Inverting Input of Op-Amp 4

and it can also be used on a breadboard

RGB LED - 1 watt Soldering Iron Bit tip The ESP-01 ESP8266 Serial WIFIIt's a RGB LEDs are substantially smaller than lead frame type components, they can be used on smaller boards, with higher packing density, less storage area, and smaller equipment. Mono Colour and Lead free. Applications Backlighting in dashboard and switch. Telecommunication: indicator and backlighting in telephone and fax. Flat backlight for LCD, switch and symbol. Specification Color Frequency Red: 620nm, Green: 520nm, Blue: 460nm Forward Voltage