NodeMCU ESP8266 Expansion Base Board

The HC-12 is a half-duplex wireless serial communication module with 100 channels in the 433.4-473.0 MHz range that is capable of transmitting up to 1 km. This project will begin by using the HC-12 to create a wireless link between two computers and end with a second article that creates a simple wireless GPS tracker.

The Nema 17 stepper motor boasts a compact and robust design, with an end face size measuring 1.7 inches by 1.7 inches. Known for its versatility, it is available in both single-shaft and dual-shaft configurations, making it suitable for a variety of applications. This motor operates with a precise step angle of 1.8°, translating to an impressive 200 steps per revolution, which allows for smooth and accurate movements.

Each phase of the NEMA 17 motor draws 1.2 A at 4 V, delivering a reliable holding torque of 3.2 kg-cm. This characteristic makes it ideal for demanding tasks where consistent positioning is essential. The Nema 17 stepper motor is widely utilized in numerous applications, including 3D printers, CNC machines, and laser cutters, where its precision and torque capabilities can significantly enhance performance and efficiency.