Servo SG90 9g 180 DegreeTiny and lightweight with high output power. Servo can rotate approximately 180 degrees
(90 in each direction), and works just like the standard kinds but smaller. You can use any
servo code, hardware or library to control these servos. Good for beginners who want to ..
DescriptionKY-031 knock sensor module. A vibration sensor that sends a signal when a knock/tap is detected.Compatible with Arduino, ESP8266, ESP32, Teensy, Raspberry Pi, and other popular platforms...