{"product_id":"kit-grid-frequency-deviation-alarm","title":"Grid Frequency Deviation Alarm Kit with Arduino Uno + LED","description":"\u003ch1\u003eBuild a Grid Frequency Deviation Alarm with Arduino Uno – Real-Time AC Mains Monitoring Kit\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 Intermediate\u003c\/span\u003e\n  \u003cspan\u003e\u003cstrong\u003eBuild Time:\u003c\/strong\u003e 3-4 hrs\u003c\/span\u003e\n  \u003cspan\u003e\u003cstrong\u003eAge:\u003c\/strong\u003e 15-18\u003c\/span\u003e\n  \u003cspan\u003e\u003cstrong\u003eSkill:\u003c\/strong\u003e Grid frequency analysis and alarm system design\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eIn India, AC grid frequency swings between 49.5 Hz and 50.2 Hz, and a sudden deviation beyond 0.5 Hz can indicate overloads or imminent generator tripping. This kit puts you in the role of a power systems engineer—you’ll build a device that uses zero-crossing detection on the ZMPT101B transformer to measure frequency, then triggers an audible and visual alarm the moment it drifts outside safe limits.\u003c\/p\u003e\n\n\u003ch2\u003eWhat You'll Build\u003c\/h2\u003e\n\u003cp\u003eYou’ll wire a complete monitoring station around an Arduino Uno, reading AC voltage through the ZMPT101B, capturing precise zero-crossing timestamps with interrupts, and computing frequency in real time. The 0.96-inch OLED displays the current frequency, while the active buzzer and on-screen icon fire whenever the frequency deviates beyond ±0.5 Hz from the set nominal (50 Hz). All events are logged with time stamps from the DS3231 RTC onto a microSD card, giving you a permanent record of grid stability for lab reports or hackathon demonstrations.\u003c\/p\u003e\n  \u003cp\u003eZMPT101B AC zero crossing measures grid frequency. Alarm triggers on deviation beyond 0.5Hz from nominal.\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\/zmpt101b-2ma-ac-voltage-transformer-sensor-module\"\u003eZMPT101B\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/ds3231-real-time-clock-module-i2c-rtc-with-battery-backup\"\u003eDS3231 RTC\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/microsd-card-reader-spi-module-for-arduino\"\u003eMicroSD Module\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/active-buzzer-dc-3-5v-85db-sounder-module-for-arduino-raspberry-pi\"\u003eActive Buzzer\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\"\u003e10kΩ 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\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 Grid Frequency Deviation Alarm Kit with Arduino Uno + LED?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The Grid Frequency Deviation Alarm Kit with Arduino Uno + LED includes all components needed: Arduino Uno R3, ZMPT101B, DS3231 RTC, MicroSD Module, Active Buzzer 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 Grid Frequency Deviation Alarm 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. ZMPT101B AC zero crossing measures grid frequency. Alarm triggers on deviation beyond 0.5Hz from nominal. Estimated build time is 3-4 hrs.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I buy the Grid Frequency Deviation Alarm Kit with Arduino Uno + LED online in India?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, the Grid Frequency Deviation Alarm 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\": \"Grid Frequency Deviation Alarm Kit with Arduino Uno + LED\",\n  \"description\": \"ZMPT101B AC zero crossing measures grid frequency. Alarm triggers on deviation beyond 0.5Hz from nominal.\",\n  \"sku\": \"CDN-KIT-1863\",\n  \"brand\": {\"@type\": \"Brand\", \"name\": \"Compoden\"},\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"url\": \"https:\/\/compoden.in\/products\/kit-grid-frequency-deviation-alarm\",\n    \"priceCurrency\": \"INR\",\n    \"price\": \"1580\",\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":53469282599277,"sku":"CDN-KIT-1863-CL","price":1800.0,"currency_code":"INR","in_stock":true},{"title":"R3 Original","offer_id":53469282632045,"sku":"CDN-KIT-1863-R3","price":4070.0,"currency_code":"INR","in_stock":true},{"title":"R4 WiFi","offer_id":53469282664813,"sku":"CDN-KIT-1863-R4","price":3430.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/kit-grid-frequency-deviation-alarm.png?v=1782286502","url":"https:\/\/compoden.com\/products\/kit-grid-frequency-deviation-alarm","provider":"Compoden","version":"1.0","type":"link"}