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.

This approach is highly advantageous for the development of prototype electronic devices. It enhances the visual appeal of your hardware project, providing a more polished and professional look in comparison to traditional single-sided perforated circuit boards.

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