DFRobot Gravity Analog AC Current Sensor - Non-Invasive Clamp buzzer module and basically the more expensive

and basically the more expensive once are more comfortable and louder but our official iPhone headset mic did not work

Serial ports are communication interfaces from one device to another

(Open source firmware that runs on an Arduino UNO that turns G-code commands into stepper signals https://github

The FLORA Accelerometer Compass Sensor LSM303 v1

5mm audio out: Lets you pass HDMI audio to headphones or speakers

DFRobot Gravity Analog AC Current Sensor - Non-Invasive Clamp buzzer module and basically the more expensiveAdd Reliable Current AC Sensor Analog Gravity Sensing to Your Next Build Current AC Sensor Analog Gravity Gravity Analog AC Current Sensor measures AC current through a clamp style probe, so you can monitor current without cutting the wire under test. It is a good fit for energy logging, appliance studies, lab demos, and maker projects that need safe current sensing with an Arduino compatible analog input. Important: Use the official DFRobot links