WOWOONE 25pcs 12x12x7.3 mm Tact Tactile Push Button Switch, 4 Pin Momentary SMD PCB Micro Switch with Cap for Arduino, AE1027 5 Colors Round Cap Assortment Kit DIY Project: Amazon.com: Industrial &
Amazon.com: Arduino Uno REV3 [A000066] : Electronics
5v Relay Module 1 Channel Relay Board for Raspberry Pi with Opto-Isolated High or Low Level Trigger 5v 1 Channel Relay Switch for Arduino: Amazon.com: Industrial & Scientific
Ardest Tactile Switch Panel PCB Mount Momentary TACT Switch Push Button for Arduino 6x6x5mm (Pack of 50 Pcs): Amazon.com: Industrial & Scientific
DKARDU 10 pcs Angle Sensor Module SW-520D Golden Ball Switch Tilt Sensor Module with Dupont Cable for Arduino: Amazon.com: Industrial & Scientific
5pcs 12X12MM Big Key Module Big Button Module Light Touch Switch Module with hat High Level Output for arduino or Raspberry pi 3: Amazon.com: Industrial & Scientific
Clap Acoustic Control Switch Module Suite Circuit Electronic PCB DIY Kit for Arduino: Amazon.com: Industrial & Scientific