Lesson 19 Relay — SunFounder sensor-kit-v2-for-arduino documentation

Lesson 29 Laser Transmitter — SunFounder sensor-kit-v2-for-arduino

Lesson 13 Controlling an LED by Button — SunFounder sensor-kit-v2

Make an Arduino Temperature Sensor (Thermistor Tutorial)

How to use a Relay with Raspberry PI Pico and MicroPython

KIT-13815 SparkFun Electronics, Maker/DIY, Educational

Description, Simple relay magnetic circuit to meet low cost of mass production., Switching capacity available by 10A in spite of small size design for

2 Channel DC 5V Relay Module-Low Level Trigger

Keyestudio ESP32 24 in 1 Sensor Starter Kit DIY Education Kit For

Lesson 14 Vibration Switch — SunFounder sensor-kit-v2-for-arduino

Lesson 16 Photo-interrupter — SunFounder sensor-kit-v2-for-arduino

How to use 5V Relay with Arduino to turn ON and OFF AC bulb or DC