The Waveshare 31512 is the WP5320 Waterproof and Dustproof Large Torque 180°, 20kg/cm Digital Servo with multiple arms.
Motor:bit is a motor driving board based on micro:bit. It has integrated a TB6612 motor driving chip, which is used to drive two motors with a maximum 1.2A DC single channel current. It has also integrated 12 GVS ports(for connecting OCTOPUS series of electric bricks) and 1 IIC communication port.
This is a rugged metal 22mm momentary version of the 6-volt full color RGB LED Ring Light pushbutton switch with normally open and normally closed settings.
This is a 460-piece assortment of momentary normally open surface mount and thru hole push button tactile switches in 24 values, and caps.
The JT-750 is a water only 20mm outlet pump operating at 6-12V with a lift between 80-500cm and flow rate of 350-700 liters per hour and which is waterproof sealed with resin.
