Keyestudio 37 in 1 Arduino sensor learning kit. Discover the exciting world of Arduino through the completion of basic to more complex projects. The kit includes digital and analog sensors, as well as some special modules such as ultrasonic, Joystick, relay, acceleration modules, etc. The sample codes for this kit are based on Arduino but can also be applied to other MCU development platforms, such as 51, STM32, and Raspberries Pi.