{"product_id":"hydroponics-nutrient-monitor-kit-with-arduino-uno-tds-ec-sensor-and-oled","title":"Hydroponics Nutrient Monitor Kit with Arduino Uno - TDS EC Sensor \u0026 OLED Display","description":"\u003ch1\u003eBuild a Hydroponics Nutrient Strength Monitor with Arduino Uno, TDS EC Sensor, and OLED Display\u003c\/h1\u003e\n\u003cp class=\"value-summary\"\u003eEvery part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.\u003c\/p\u003e\n\u003cdiv class=\"specs-strip\"\u003e\n  \u003cspan\u003e\u003cstrong\u003eDifficulty:\u003c\/strong\u003e Intermediate\u003c\/span\u003e\n  \u003cspan\u003e\u003cstrong\u003eBuild Time:\u003c\/strong\u003e 3-4 hours\u003c\/span\u003e\n  \u003cspan\u003e\u003cstrong\u003eAge:\u003c\/strong\u003e 15-18\u003c\/span\u003e\n  \u003cspan\u003e\u003cstrong\u003eSkill:\u003c\/strong\u003e Sensor Interfacing \u0026amp; Data Visualization\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003eStep into precision agriculture by building a tool that hydroponic growers and plant scientists use daily - a digital meter that instantly reads the nutrient concentration of any water-based solution. This kit combines an Arduino Uno R3 with a TDS EC probe and a waterproof DS18B20 temperature sensor, turning raw electrical conductivity into clear parts-per-million (PPM) readings on a bright 0.96-inch OLED. Whether you're optimizing lettuce growth in a school ATL lab or preparing a submission for the Smart India Hackathon, you'll finish with a portable, calibrated device that shows exactly when your nutrient solution hits the sweet spot for vigorous plant growth.\u003c\/p\u003e\n\u003ch2\u003eWhat You'll Build\u003c\/h2\u003e\n\u003cp\u003eYou'll assemble a handheld or benchtop monitor that dips a TDS EC probe into a hydroponic reservoir, auto-corrects for temperature via the DS18B20, and displays the real-time PPM. The OLED screen includes a visual target-range indicator - a simple bar or icon that turns from red to green when the solution enters the ideal zone for leafy greens, tomatoes, or whatever crop you're growing. All components plug into the included 400-point breadboard, leaving room to add a data logger or buzzer later.\u003c\/p\u003e\n\u003ch2\u003eWhat You'll Learn\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eInterface an analog TDS EC meter with Arduino and convert voltage to PPM using the standard 500 scale\u003c\/li\u003e\n  \u003cli\u003eRead precise liquid temperature with a DS18B20 waterproof sensor over OneWire for conductivity compensation\u003c\/li\u003e\n  \u003cli\u003eDrive a 0.96-inch I2C OLED using the SSD1306 library to show numeric values and dynamic range graphics\u003c\/li\u003e\n  \u003cli\u003eCalibrate the meter with known solutions (e.g., 1413 �S\/cm reference) to ensure real-world accuracy\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eKit Contents\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eComponent\u003c\/th\u003e\n\u003cth\u003eQuantity\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eArduino Uno R3\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTDS EC Meter\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDS18B20 Waterproof\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e0.96in OLED\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e4.7k? Resistors\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e10k? Resistors\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e100nF Caps\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e400-pt Breadboard\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM-M Wires\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e9V Battery Snap\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhy Buy This Kit Instead of Sourcing Parts Separately\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFactor\u003c\/th\u003e\n\u003cth\u003eSourcing Separately\u003c\/th\u003e\n\u003cth\u003eCompoden Kit\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCompatibility checks\u003c\/td\u003e\n\u003ctd\u003eYou verify every part\u003c\/td\u003e\n\u003ctd\u003ePre-tested as a system\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBuild support\u003c\/td\u003e\n\u003ctd\u003eForums and scattered tutorials\u003c\/td\u003e\n\u003ctd\u003eAI companion trained on this exact project\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTime to first working build\u003c\/td\u003e\n\u003ctd\u003eDays of debugging\u003c\/td\u003e\n\u003ctd\u003eHours, with step-by-step guidance\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eShipping coordination\u003c\/td\u003e\n\u003ctd\u003eMultiple sellers, multiple delays\u003c\/td\u003e\n\u003ctd\u003eOne shipment from Bengaluru in 3-5 days\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWho This Kit Is For\u003c\/h2\u003e\n\u003cp\u003eDesigned for CBSE Class 11-12 students exploring sensor-based agriculture, B.Tech ECE\/Agri-tech undergrads building mini projects, and ATL Tinkering Lab facilitators running hydroponics workshops. It also suits IIT, NIT, VIT, and BITS students preparing prototypes for hackathons where quick, reliable nutrient monitoring can make a winning demo. If you've ever wanted to move from textbook theory to a working instrument that solves a real agritech problem, this kit is your on-ramp.\u003c\/p\u003e\n\u003ch2\u003eBuilt and Backed by Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery Compoden kit ships with an AI build companion trained on this exact project - accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.\u003c\/p\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat if I get stuck during the build?\u003c\/summary\u003e\u003cp\u003eYour kit's QR code links to an interactive AI guide trained on every step of this specific TDS OLED project. It responds with pinout diagrams, wiring checks, and code snippets - no forum hopping needed. If you need a human, our WhatsApp support is active 10 AM-8 PM IST.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I use this meter to measure soil nutrients?\u003c\/summary\u003e\u003cp\u003eNo. The TDS EC probe is designed for water-based nutrient solutions, not soil. It's perfect for deep water culture, NFT, or drip hydroponic systems.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDo I need coding experience to complete the build?\u003c\/summary\u003e\u003cp\u003eBasic familiarity with Arduino IDE helps, but the AI companion provides the full sketch with comments. You'll learn how to read analog values, apply a calibration function, and print to the OLED - all explained line-by-line.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat crops can I monitor with this nutrient meter?\u003c\/summary\u003e\u003cp\u003eAny hydroponic crop, from leafy greens like spinach and lettuce to fruiting plants like tomatoes and peppers. The target PPM range you set on the OLED can be adjusted for each plant's growth stage.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdiv class=\"kit-description\"\u003e\n  \u003cp\u003eCooking - TDS EC sensor reads nutrient solution strength. OLED shows PPM with target range indicator for plant growth.\u003c\/p\u003e\n  \u003ch4\u003eWhat's in this kit\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/uno-r3-ch340g-atmega328p-board-arduino-compatible\"\u003eArduino Uno R3\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/analog-tds-water-quality-meter-v10-sensor-for-arduino\"\u003eTDS EC Meter\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/ds18b20-waterproof-temperature-sensor-probe-55c-to-125c\"\u003eDS18B20 Waterproof\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/096in-oled-display-128x64-i2cspi-for-arduino-raspberry-pi\"\u003e0.96in OLED\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"\/products\/resistor-variety-pack-100-pcs-10-values-14w-carbon-film\"\u003e4.7k? Resistors\u003c\/a\u003e x5\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"\/products\/resistor-variety-pack-100-pcs-10-values-14w-carbon-film\"\u003e10k? Resistors\u003c\/a\u003e x5\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"\/products\/capacitor-variety-pack-6-values-100nf-to-470uf-30-pieces\"\u003e100nF Caps\u003c\/a\u003e x5\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/breadboard-standard-bundle-830400-tie-points-for-prototyping\"\u003e400-pt Breadboard\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003eM-M Wires x20\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/9v-battery-snap-connector-with-15cm-wires-compoden\"\u003e9V Battery Snap\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is included in the Sous-Vide Cooking Temperature Kit with Arduino Uno + LED?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The Sous-Vide Cooking Temperature Kit with Arduino Uno + LED includes all components needed: Arduino Uno R3, TDS EC Meter, DS18B20 Waterproof, 0.96in OLED, 4.7k? Resistors and more. Everything is pre-tested for compatibility and shipped from Bengaluru, India.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What skill level is required for the Sous-Vide Cooking Temperature Kit with Arduino Uno + LED?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This kit is designed for Intermediate level makers, suitable for ages 15-18. Cooking - TDS EC sensor reads nutrient solution strength. OLED shows PPM with target range indicator for plant growth. Estimated build time is 3-4 hrs.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I buy the Sous-Vide Cooking Temperature Kit with Arduino Uno + LED online in India?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, the Sous-Vide Cooking Temperature Kit with Arduino Uno + LED is available online at Compoden (compoden.in), India's AI-powered electronics and robotics store. Ships from Bengaluru in 1-5 business days across India.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"Sous-Vide Cooking Temperature Kit with Arduino Uno + LED\",\n  \"description\": \"Cooking - TDS EC sensor reads nutrient solution strength. OLED shows PPM with target range indicator for plant growth.\",\n  \"sku\": \"CDN-KIT-3407\",\n  \"brand\": {\"@type\": \"Brand\", \"name\": \"Compoden\"},\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"url\": \"https:\/\/compoden.in\/products\/kit-sousvide-cooking-temperature-kit-with-arduino-uno-plus-led\",\n    \"priceCurrency\": \"INR\",\n    \"price\": \"1700\",\n    \"availability\": \"https:\/\/schema.org\/InStock\",\n    \"seller\": {\"@type\": \"Organization\", \"name\": \"Compoden\"}\n  },\n  \"category\": \"Sensor Starter Kits\"\n}\n\u003c\/script\u003e","brand":"Compoden","offers":[{"title":"Clone","offer_id":53463880302957,"sku":"CDN-KIT-3407-CL","price":1940.0,"currency_code":"INR","in_stock":true},{"title":"R3 Original","offer_id":53463880335725,"sku":"CDN-KIT-3407-R3","price":4210.0,"currency_code":"INR","in_stock":true},{"title":"R4 WiFi","offer_id":53463880368493,"sku":"CDN-KIT-3407-R4","price":3580.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/kit-sousvide-cooking-temperature-kit-with-arduino-uno-plus-led.png?v=1781949312","url":"https:\/\/compoden.com\/products\/hydroponics-nutrient-monitor-kit-with-arduino-uno-tds-ec-sensor-and-oled","provider":"Compoden","version":"1.0","type":"link"}