{"product_id":"diy-ac-power-meter-kit-arduino-uno-oled-energy-monitor","title":"DIY AC Power Meter Kit - Arduino Uno OLED Energy Monitor","description":"\u003ch1\u003eBuild a Home Appliance Watt Meter with Arduino Uno + OLED - Know Exactly What Your Appliances Cost to Run\u003c\/h1\u003e\n\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\n\u003cdiv class=\"specs-strip\"\u003e\n  \u003cspan\u003e\u003cstrong\u003eDifficulty:\u003c\/strong\u003e Beginner\u003c\/span\u003e\n  \u003cspan\u003e\u003cstrong\u003eBuild Time:\u003c\/strong\u003e 2-3 hrs\u003c\/span\u003e\n  \u003cspan\u003e\u003cstrong\u003eAge:\u003c\/strong\u003e 5-15\u003c\/span\u003e\n  \u003cspan\u003e\u003cstrong\u003eSkill:\u003c\/strong\u003e AC Power Measurement \u0026amp; Sensor Interfacing\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp\u003ePlug in any home appliance - a fan, phone charger, or TV - and this Arduino-powered meter instantly reveals live watts, amps, and power factor on a crisp 0.96-inch OLED. Built around the PZEM-004T module, it's a real-world energy monitoring tool that demystifies electricity consumption. Perfect for anyone who wants to see exactly how much power their devices draw, right at the wall socket.\u003c\/p\u003e\n\n\u003ch2\u003eWhat You'll Build\u003c\/h2\u003e\n\u003cp\u003eYou'll assemble a compact power monitoring station that uses the PZEM-004T sensor to read real AC parameters through a snap-on current clamp - no wiring into the mains is needed. The Arduino Uno processes the data and drives the OLED to display watts, current, voltage, apparent power, and power factor. The result is a portable, battery-free watt meter you can use around the house to compare appliance efficiency.\u003c\/p\u003e\n\n\u003ch2\u003eWhat You'll Learn\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eInterface the PZEM-004T energy sensor using a serial protocol and interpret its AC measurements\u003c\/li\u003e\n  \u003cli\u003eProgram an Arduino Uno to read real power (watts), current (amps), voltage, and power factor\u003c\/li\u003e\n  \u003cli\u003eDrive a 0.96-inch OLED display via I�C and format live data clearly\u003c\/li\u003e\n  \u003cli\u003eBuild a self-contained meter with a buck converter regulating power from a USB source or battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\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\u003ePZEM-004T\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\u003eLM2596 Buck Converter\u003c\/td\u003e\n\u003ctd\u003e1\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  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\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\n\u003ch2\u003eWho This Kit Is For\u003c\/h2\u003e\n\u003cp\u003eIdeal for CBSE Class 11-12 physics practicals, ATL Tinkering Lab sessions, and B.Tech ECE\/EEE mini-projects where real energy metering adds immediate relevance. The 5-15 age span means younger makers can build it with an adult nearby while older students and hobbyists will appreciate the genuine AC measurements and clean OLED display. It also fits neatly into Smart India Hackathon prototypes or IIT\/NIT\/VIT\/BITS lab demonstrations.\u003c\/p\u003e\n\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\n\u003cdetails\u003e\u003csummary\u003eWhat if I get stuck during the build?\u003c\/summary\u003e\u003cp\u003eScan the QR code on the box to launch the AI companion trained for this kit. It walks you through every step. You can also message us on WhatsApp for fast troubleshooting from a real Compoden engineer.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes the kit include the current clamp for the appliance?\u003c\/summary\u003e\u003cp\u003eYes. The PZEM-004T module comes with a split-core current transformer (CT) that clamps around the live wire of the appliance, so no cutting of wires is required.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDo I need to solder anything?\u003c\/summary\u003e\u003cp\u003eNo soldering is needed. All connections are made on the included 400-point breadboard using the male-to-male jumper wires. The whole circuit can be assembled and disassembled easily.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs it safe for a 10-year-old to use?\u003c\/summary\u003e\u003cp\u003eThe current clamp and PZEM-004T module are fully insulated and designed for non-contact AC measurement. With adult supervision to handle the mains plug, a 10-year-old can safely build and use this meter while learning about home energy.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdiv class=\"kit-description\"\u003e\n  \u003cp\u003ePZEM-004T measures real AC power of any plugged appliance. OLED shows watts, amps and power factor.\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\/pzem-004t-ac-energy-monitor-module-100a-modbus-rtu\"\u003ePZEM-004T\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\u003ca href=\"\/products\/lm2596-buck-converter-step-down-voltage-regulator-module\"\u003eLM2596 Buck Converter\u003c\/a\u003e\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  \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 Home Appliance Watt Meter Kit with Arduino Uno + LED?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The Home Appliance Watt Meter Kit with Arduino Uno + LED includes all components needed: Arduino Uno R3, PZEM-004T, 0.96in OLED, LM2596 Buck Converter, 100nF Caps 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 Home Appliance Watt Meter Kit with Arduino Uno + LED?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This kit is designed for Beginner level makers, suitable for ages 5-15. PZEM-004T measures real AC power of any plugged appliance. OLED shows watts, amps and power factor. Estimated build time is 2-3 hrs.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I buy the Home Appliance Watt Meter Kit with Arduino Uno + LED online in India?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, the Home Appliance Watt Meter Kit with Arduino Uno + LED is available online at Compoden (compoden.in), India's AI-powered electronics and robotics store. 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OLED shows watts, amps and power factor.\",\n  \"sku\": \"CDN-KIT-1808\",\n  \"brand\": {\"@type\": \"Brand\", \"name\": \"Compoden\"},\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"url\": \"https:\/\/compoden.in\/products\/kit-home-appliance-watt-meter\",\n    \"priceCurrency\": \"INR\",\n    \"price\": \"2435\",\n    \"availability\": \"https:\/\/schema.org\/InStock\",\n    \"seller\": {\"@type\": \"Organization\", \"name\": \"Compoden\"}\n  },\n  \"category\": \"Power \u0026 Energy\"\n}\n\u003c\/script\u003e","brand":"Compoden","offers":[{"title":"Clone","offer_id":53469272539501,"sku":"CDN-KIT-1808-CL","price":2810.0,"currency_code":"INR","in_stock":true},{"title":"R3 Original","offer_id":53469272572269,"sku":"CDN-KIT-1808-R3","price":5080.0,"currency_code":"INR","in_stock":true},{"title":"R4 WiFi","offer_id":53469272605037,"sku":"CDN-KIT-1808-R4","price":4440.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/kit-home-appliance-watt-meter.png?v=1781947229","url":"https:\/\/compoden.com\/products\/diy-ac-power-meter-kit-arduino-uno-oled-energy-monitor","provider":"Compoden","version":"1.0","type":"link"}