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1. Introduction

This is a DIY MCU design teaching Electronic windmills kit parts for soldering practice.

The circuit is based on MCU control. MCU control different vertical LED lighting, so as to achieve the effect of windmill rotation. The speed of the windmill can be changed by press the buttons.

2. Parameter

NO.	Parameter	Value
1	Operating voltage	DC 5V
2	Work efficiency	Adjustable speed
3	PCB board material	RF-4
4	Size	40mm*50mm

3. Schematic

4. Component listing

NO.	Component Name	PCB Marker	Parameter	QTY
1	Red LED	D1-D19	3mm	19
2	Metal Film Resistor	R1-R4	1K	4
3	Button	S1,S2	6*6mm	2
4	STC15F104EA	U1	DIP-8	1
5	Male Pin	DC	2P	1
6	PCB		40*50mm	1

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