Plant Pal Kit — ESP32 Smart Watering

Keep your plants alive without thinking about it. An ESP32-C3 reads a capacitive soil-moisture sensor every 15 minutes and drives a mini pump when soil drops below 30% — all logged to Home Assistant over Wi-Fi.

What is in the box

• ESP32-C3 SuperMini development board (pre-flashed)
• Capacitive soil moisture sensor v1.2 (corrosion-resistant)
• 2-Channel 5V relay module (pump drive)
• Breadboard + jumper wires + USB-C cable
• Step-by-step build guide + free online simulator demo

How it works

1. Unbox & check the BOM — ESP32-C3 arrives pre-flashed.
2. Insert the sensor into soil to the marked line; wire A0 → sensor OUT, GPIO5 → pump relay IN.
3. Calibrate once: dry soil = 0%, fully wet = 100%.
4. Home Assistant auto-discovers moisture sensor + pump switch.

Try it first: run this exact project in our free online simulator before you buy.