NodeMCU ESP8266 Expansion Base Board

Independent soil moisture sensor with built-in buzzer that gives a warning when the humidity is low.

The sensor distinguishes itself from other soil moisture sensors by the capacitive measurement instead of a resistance measurement. This makes the sensor a lot more corrosion-resistant and therefore lasts longer.

Specifications:

• Input voltage: 3VDC via a CR2032 button-cell battery (Note: the battery is not included, but is sold separately)
• Size: 140x15mm

This Sonoff Dual is a 1-channel WiFi wireless switch that can connect and control one home appliance and electrical device. this device Enables remote control of home appliances through the mobile application. the Sonoff Basic switch’s advantages such as easy installation and operation, quick WiFi access, and APP remote control.

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.