{"product_id":"diy-stem-soil-moisture-sensor-kit-for-beginners-light-up-plant-water-indicator-with-led-circuit-educational-electronics-set","title":"DIY STEM Soil Moisture Sensor Kit for Beginners – Light-Up Plant Water Indicator with LED Circuit (Educational Electronics Set)","description":"\u003cp\u003eBring science to life with this hands-on DIY soil moisture sensor kit that teaches electronics while solving a real problem—knowing exactly when your plants need water.\u003c\/p\u003e\n\u003cp\u003eThis educational kit lets you build a light-up flower indicator that responds to soil moisture levels. When the soil becomes too dry, the LED lights up, giving you a clear signal to water your plant.\u003c\/p\u003e\n\u003cp\u003ePerfect for beginners, students, and hobbyists, this Level 2 kit introduces essential electronics concepts including:\u003cbr\u003e- How an NPN transistor works as a switch\u003cbr\u003e- Understanding resistors and variable resistance (potentiometer)\u003cbr\u003e- Building a voltage divider circuit\u003cbr\u003e- Using conductivity to measure soil moisture\u003c\/p\u003e\n\u003cp\u003e🌿 How It Works\u003cbr\u003eThe “roots” act as a moisture sensor by measuring resistance in the soil.\u003cbr\u003eWet soil = low resistance → LED OFF\u003cbr\u003eDry soil = high resistance → LED ON\u003cbr\u003eUse the adjustable dial (potentiometer) to calibrate the moisture level for your specific plant.\u003c\/p\u003e\n\u003cp\u003e📦 What’s Included\u003cbr\u003e1 × NPN Transistor\u003cbr\u003e1 × 220Ω Resistor\u003cbr\u003e1 × 100K Potentiometer\u003cbr\u003e1 × Red LED\u003cbr\u003eCircuit board\u003c\/p\u003e\n\u003cp\u003eTools Required (Not Included)\u003cbr\u003eSoldering iron\u003cbr\u003eSolder wire\u003cbr\u003eWire cutters\u003cbr\u003ePhillips screwdriver\u003c\/p\u003e","brand":"Lectrify","offers":[{"title":"Default Title","offer_id":48155620409603,"sku":"sku-45032803401928","price":18.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/phishstonesproducts.myshopify.com\/products\/diy-stem-soil-moisture-sensor-kit-for-beginners-light-up-plant-water-indicator-with-led-circuit-educational-electronics-set","provider":"PhishStones Products","version":"1.0","type":"link"}