3pcs DC 5V DIY Electronic Windmill Training Kit Speed Adjustable MCU Course Design Set For Soldering

Description: Working voltage: DC 5V Work effect: speed can be adjusted Size: 40 x 50mm Note: it is not soldering finished product, it is diy kit. Circuit principle: The circuit is based on the control of the microcontroller, the microcontroller controls the vertical LED lit, so as to achieve the effect of a windmill rotation, you can change the speed of the windmill flashing through the button. Package included: 3 x DIY windmill training kit