Potentiometer

This sensor produces an analog output between 0V and VCC (3.3V with ESP) on its D1 pin. D2 is unused. the angular range is 300 degrees with a linear change in value. The resistance value is 10k ohm.

LED Socket

This grove LED pack includes 4 kinds of different colors of LED which are red, green, blue, and white, and equipped with a potentiometer to control the brightness of the LED.

WARNING: Ensure you plug the LED with the right polarity. The anode should go to the + on the board. Check the following image to find out the LED polarity.

Grove Button

Simple button with a Grove connector. The input is LOW when the button is pressed.

Chainable RGB LED

These RGB LEDs can be chained using the I2C bus. So, only one is connected to the board.