PROJECT 5: PLANT MONITOR
IN THIS PROJECT I’LL INTRODUCE A NEW TYPE OF ANALOG SENSOR THAT DETECTS MOISTURE LEVELS. YOU’LL SET UP A LIGHT AND SOUND ALARM SYSTEM TO TELL YOU WHEN YOUR PLANT NEEDS WATERING.
PARTS REQUIRED
• Arduino board
• Jumper wires
• LED
• HL-69 hygrometer soil moisture sensor
• Piezo buzzer
HOW IT WORKS
You’ll use an HL-69 moisture sensor, readily available online for a few dollars or from some of the retailers listed in Appendix A. The prongs of the sensor detect the moisture level in the surrounding soil by passing current ...
Get Arduino Project Handbook now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
