The start kit for Micro: bit can work with you for a lot of interesting things and brings endless possibilities to your Micro: bit. This kit includes more than 20 modules like the buzzer, light sensor, servo, ultrasonic ranging sensor, OLED, etc. The kit also provides you with plenty of fun experiments so you can learn how the electric modules work and use them to build innovative works and plan out unique projects. All of the Crowtail modules have standard 4-pin connectors, so it’s easy to plug them into the base shield to realize your ideas. The clear tutorial teaches you to use the Micro: bit and sensor step by step. Now, let's enjoy them. Read the official blog to know more! Feature: Various modules with different functions, plug and play, no troublesome soldering and no complicated wiring. More than 20 creative tutorials and 20 well-selected electronic modules. Well-designed packaged, soft internal slot structure with clasp, protecting and settling the modules very well. Specification: Package weight: 678.8 Package size: 11.5 x 8 x 1.5inch Package List: Crowtail-Base Shield for Micro:bit x1 Crowtail-LED(Yellow)x1 Crowtail-LED(Green)x1 Crowtail-Buzzer x1 Crowtail-Switch x1 Crowtail-Touch Sensor x1 Crowtail-Collision Sensor x1 Crowtail-Light Sensor x1 Crowtail-Moisture Sensor x1 Crowtail-PIR Motion Sensor x1 Crowtail-Ultrasonic Ranging Sensor x1 Crowtail-Linear Potentiometer x1 Crowtail-Temperature&Humidity Sensor x1 Crowtail-Relay x1 Crowtail-9G Servo x1 Crowtail-RTC x1 Crowtail-OLED x1 Crowtail-IR Receiver x1 Infrared Remote Control x1 DC motor x1 USB Cable x1 User Manual x1 Wiki & External links User manual Code