{"product_id":"kit-digital-kitchen-scale-kit-with-arduino-uno-plus-stepper-motor","title":"Digital Kitchen Scale Kit with Arduino Uno + Stepper Motor","description":"\u003ch1\u003eArduino Digital Kitchen Scale \u0026amp; Rope Tension Control: Stepper Motor with PID Feedback\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 4-5 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 PID-based motor control with load cell feedback\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003eYou’re not just making a scale; you’re building a closed‑loop tension system that unspools a rope drum with constant force, preventing the tangles and snapping that plague manual kitchen hanging scales. A NEMA 17 stepper, guided by real‑time input from a 1 kg load cell and a tuned PID algorithm, delivers the precision missing from off‑the‑shelf units — all on an Arduino Uno.\u003c\/p\u003e\n\u003ch2\u003eWhat You'll Build\u003c\/h2\u003e\n\u003cp\u003eBy the final hour, you’ll have a compact motorised winch that reads tension on a 0.96‑inch OLED, then adjusts the drum speed automatically. The rope feeds smoothly under load, compensating for the weight of hanging ingredients, utensils, or even a small market bag. It’s a working demonstration of how modern kitchen scales and industrial payout machines maintain consistent tension without human intervention.\u003c\/p\u003e\n\u003ch2\u003eWhat You'll Learn\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eInterface a 1 kg strain‑gauge load cell and HX711 amplifier to read sub‑gram force changes\u003c\/li\u003e\n  \u003cli\u003eProgram a PID loop on Arduino that translates real‑time tension data into precise stepper motor steps\u003c\/li\u003e\n  \u003cli\u003eConfigure an A4988 driver to microstep a NEMA 17 motor for smooth rope payout\u003c\/li\u003e\n  \u003cli\u003eDisplay live tension and setpoint values on a 0.96‑inch OLED screen using I²C communication\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\u003eNEMA 17 Stepper\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eA4988 Driver\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHX711 + 1kg Load Cell\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\u003e100nF Caps\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e12V 2A PSU\u003c\/td\u003e\n\u003ctd\u003e1\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\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\u003eCBSE Class 11–12 students preparing physics or microprocessor projects, B.Tech ECE\/EEE undergraduates tackling control systems labs, and ATL Tinkering Lab mentors looking for an intermediate‑level automation challenge. If you’re prototyping for Smart India Hackathon or competing at NIT\/VIT\/BITS fests, this kit gives you a real feedback‑control experiment that’s far more engaging than an open‑loop motor driver.\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\u003eScan the QR code to chat with the AI companion, or drop a message on WhatsApp — our team sees your exact project wiring and can pinpoint a mis‑step in minutes.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I tune the PID constants for my rope and load?\u003c\/summary\u003e\u003cp\u003eThe build guide offers safe starting P, I, and D values for the included 1 kg load cell and NEMA 17. You’ll then learn to adjust them while watching the tension graph on the OLED, just like an industrial control engineer.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I use this setup for a hanging kitchen scale that weighs items continuously?\u003c\/summary\u003e\u003cp\u003eYes. The load cell reads tension not weight directly, but by knowing the rope angle and pulley geometry, you calibrate it to display grams. The PID loop then keeps the rope taut as you add or remove items, avoiding sudden drops.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs the OLED bright enough for a kitchen environment?\u003c\/summary\u003e\u003cp\u003eThe 0.96‑inch OLED offers crisp white‑on‑black pixels, readable in typical kitchen lighting. You can also mount it behind the drum where it stays protected from spills and steam.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdiv class=\"kit-description\"\u003e\n  \u003cp\u003eKitchen — NEMA17 drum feeds rope at constant tension measured by load cell. PID loop prevents tangles.\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\/nema-17-stepper-motor-18-step-045nm-bipolar\"\u003eNEMA 17 Stepper\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/a4988-stepper-motor-driver-module-with-microstepping-control\"\u003eA4988 Driver\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003eHX711 + 1kg Load Cell\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\/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\/12v-2a-dc-adapter-reliable-power-supply-for-projects\"\u003e12V 2A PSU\u003c\/a\u003e\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 Digital Kitchen Scale Kit with Arduino Uno + Stepper Motor?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The Digital Kitchen Scale Kit with Arduino Uno + Stepper Motor includes all components needed: Arduino Uno R3, NEMA 17 Stepper, A4988 Driver, HX711 + 1kg Load Cell, 0.96in OLED 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 Digital Kitchen Scale Kit with Arduino Uno + Stepper Motor?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This kit is designed for Intermediate level makers, suitable for ages 15-18. Kitchen — NEMA17 drum feeds rope at constant tension measured by load cell. PID loop prevents tangles. Estimated build time is 4-5 hrs.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I buy the Digital Kitchen Scale Kit with Arduino Uno + Stepper Motor online in India?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, the Digital Kitchen Scale Kit with Arduino Uno + Stepper Motor 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\": \"Digital Kitchen Scale Kit with Arduino Uno + Stepper Motor\",\n  \"description\": \"Kitchen — NEMA17 drum feeds rope at constant tension measured by load cell. PID loop prevents tangles.\",\n  \"sku\": \"CDN-KIT-3767\",\n  \"brand\": {\"@type\": \"Brand\", \"name\": \"Compoden\"},\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"url\": \"https:\/\/compoden.in\/products\/kit-digital-kitchen-scale-kit-with-arduino-uno-plus-stepper-motor\",\n    \"priceCurrency\": \"INR\",\n    \"price\": \"2630\",\n    \"availability\": \"https:\/\/schema.org\/InStock\",\n    \"seller\": {\"@type\": \"Organization\", \"name\": \"Compoden\"}\n  },\n  \"category\": \"Motor \u0026 Motion Control\"\n}\n\u003c\/script\u003e","brand":"Compoden","offers":[{"title":"Clone","offer_id":53463914807661,"sku":"CDN-KIT-3767-CL","price":3040.0,"currency_code":"INR","in_stock":true},{"title":"R3 Original","offer_id":53463914840429,"sku":"CDN-KIT-3767-R3","price":5310.0,"currency_code":"INR","in_stock":true},{"title":"R4 WiFi","offer_id":53463914873197,"sku":"CDN-KIT-3767-R4","price":4670.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/kit-digital-kitchen-scale-kit-with-arduino-uno-plus-stepper-motor.png?v=1781949557","url":"https:\/\/compoden.com\/products\/kit-digital-kitchen-scale-kit-with-arduino-uno-plus-stepper-motor","provider":"Compoden","version":"1.0","type":"link"}