ESP32 Smart Plug Prototype

@amelectronics

Hi, I can develop a complete ESP32-based proof of concept that independently monitors 4 household appliance outlets and instantly sends an HTTP/HTTPS request when a load exceeds a configurable threshold. The solution will measure real-time voltage, current, and power consumption for each outlet, then transmit the plug ID, voltage, and wattage to your specified endpoint using either GET or POST requests. Wi-Fi credentials, API URL, and trigger thresholds will be configurable in code, with a simple serial menu or captive portal for easy setup. Deliverables: • Well-commented ESP32 firmware • Independent monitoring for 4 outlets • Real-time voltage and power measurement • HTTP/HTTPS notification system • Configurable thresholds and network settings • Safe current and voltage sensing schematic • Complete BOM and component recommendations • Setup, flashing, and testing guide You'll receive all source files and documentation needed to assemble, configure, and test the prototype. The project will be considered complete once the device can connect to Wi-Fi, detect appliance activity, accurately report voltage and power usage, and successfully deliver the required HTTP payload to your server. I have experience with ESP32, IoT firmware, power-monitoring circuits, and API integrations, and can deliver a reliable, expandable solution suitable for further product development.

@deeproadrash

I have expertise in ESP32 programming & hardware design. I have worked with energy measurement, smart plug, HTTP REST GET/POST APIs, MQTT, Captive portal, WiFi, UART. I can help you to develop smart plug prototype. I can also help for production after prototype will be tested.

@abdurRafiqM

HI, I am an experienced electronics and PCB Design engineer, specialised in use of ECAD software such as Altium Designer, KICAD, EasyEDA, etc. for the the design of electronics and PCB. I will design your projects to meet your Requirements and the industry standard. I do all kinds of circuits such as Power delivery circuit, Sensor Integrated Circuits, wireless control, MCUs etc. I will deliver the following. The Schematics for your Design The PCB for the design Bill of materials(If needed) Gerber, Pick and Place and other manufacturing and assembly drawings needed. Full Support and consultancy till the project is done. Kindly send me message for my previous designs and also so we can discuss further on your project I look Forward to working with you. Best Regards, Abdur-Rafiq

@Webslinger01

I read your smart plug brief and this is exactly the kind of tight, focused build I handle routinely. Ten years of embedded work means I can take you from a blank page to a working prototype without the back-and-forth that kills small projects. I'll design the custom PCB, write the ESP firmware, and get the relay and metering logic running cleanly—all under one roof, no handoffs. I've shipped production IoT hardware like a solar-powered water vending machine for a remote desert community, where every component had to work reliably with zero margin for error. That same discipline applies here. You get a functional prototype with proper power handling and wireless stability, not a breadboard experiment. Let's get this built.

@Srashtasoft

Hi there, I have read your project requirement, you need an ESP32-based solution to independently monitor four household appliance plugs, measure power consumption and voltage, and trigger an HTTP/HTTPS request whenever a configurable load threshold is exceeded. You need safe and reliable current and voltage sensing, configurable Wi-Fi and endpoint settings, and well-structured firmware that provides accurate event reporting and easy prototype setup. We can deliver a complete proof-of-concept including ESP32 firmware, schematic and BOM, current/voltage sensing circuitry for four outlets, configurable thresholds, and a simple serial menu or captive portal for updating Wi-Fi credentials and endpoint URLs. Could you please confirm: ======================= What mains voltage standard will be used (110V or 220–240V)? Do you prefer GET requests with query parameters or JSON payloads via POST? Is local data logging required in addition to HTTP notifications? Do you have preferred current sensing modules (e.g., SCT-013, ACS712, PZEM-004T), or should we recommend suitable components? Best Regards, SrashtaSoft Team

@alluankit01

Hi, I can build the ESP32 smart plug prototype firmware and provide the schematic/parts list for safely monitoring four independent household appliance plugs. The best solution is to use isolated current/voltage sensing modules or properly protected metering IC/modules for each outlet, then have the ESP32 read power/voltage values, compare each plug against configurable thresholds, and trigger an HTTP/HTTPS GET or POST to your endpoint with plug ID, watts, and voltage. I’m comfortable with ESP32 firmware, Arduino/ESP-IDF, Wi-Fi connectivity, HTTP/REST calls, current sensing, voltage monitoring, threshold logic, serial configuration menus, captive portal setup, home automation prototypes, and embedded debugging. Deliverables will include: * Well-commented ESP32 firmware * Four-channel plug monitoring logic * Configurable SSID, password, endpoint, and thresholds * HTTP/HTTPS event trigger * Power/voltage logging * Schematic and parts list * Safe wiring notes for mains sensing * Flashing and bench test guide I’ll prioritize electrical safety by recommending isolated sensing and proper mains separation, since this involves household AC loads. Best regards Ankit

@anjalin0309

Hello, I can help with this ESP32-based mains monitoring PoC. I work in embedded hardware and firmware development, including ESP32, PCB design, sensor interfacing, and IoT systems. Recently I also designed a battery-powered smartwatch, so I’m comfortable with low-power embedded hardware, compact PCB design, and reliable firmware integration. For this project, I can develop both the firmware and hardware needed to monitor 4 appliance channels independently, measure voltage/current, estimate power usage, and trigger an HTTP/HTTPS request as soon as a channel crosses a configurable threshold. I can also make Wi-Fi credentials, endpoint URL, and thresholds configurable in code, and if needed add a simple serial menu for setup. I can provide: * ESP32 firmware for 4-channel monitoring and event reporting * Schematic and BOM for safe mains voltage/current sensing * HTTP/HTTPS GET/POST with plug ID, watts, and voltage * Configurable thresholds and network settings * Setup guide for flashing, wiring, and bench testing I have hands-on experience with embedded testing, debugging, and practical hardware implementation, so I can help build a proof-of-concept that is not just functional in firmware, but also realistic and safe from a hardware perspective. If you’d like, I can also suggest the sensing architecture I’d use for the 4 mains channels before starting. Best regards, Anjali

@chetanb382

Hi, We reviewed your requirements and this looks like a project I can help with. We have experience with ESP32 firmware, Wi-Fi communication, IoT systems, sensor integration, and embedded hardware development. We can develop the ESP32 firmware to monitor four independent loads, measure voltage and power consumption, connect to Wi-Fi, and send HTTP/HTTPS requests when configurable thresholds are exceeded. We can also provide the sensing schematic, parts list, and setup guide for prototype testing. Timeline: 6 Days Budget: ₹9,000 A few quick questions: 1. What mains voltage will be used (110V or 230V)? 2. Do all four outlets need simultaneous monitoring? 3. What level of measurement accuracy do you require? 4. Are ready-made current sensing modules acceptable for the prototype? 5. Do you prefer a captive portal or serial configuration menu for Wi-Fi setup? We can start immediately and will keep you updated throughout the project. Regards, M&C Eng

@ThynkLoop

Hi, I can help develop the complete ESP32 Smart Plug prototype, including firmware, safe power-sensing circuitry, and cloud communication for real-time monitoring and event notifications. I have experience with ESP32 firmware development, Wi-Fi connectivity, HTTP/HTTPS and REST APIs, current and voltage sensing, power monitoring, and IoT automation systems. I can deliver a reliable solution with configurable settings, accurate measurements, and clean, well-documented code. Proposed Approach • Develop ESP32 firmware for monitoring four independent plugs • Integrate voltage and current sensing for each channel • Calculate real-time voltage and power consumption • Trigger HTTP/HTTPS GET or POST requests when power exceeds configurable thresholds • Implement Wi-Fi connectivity, automatic reconnection, and configurable settings through serial menu or captive portal • Prepare schematic, BOM, and safe AC sensing interface • Test, optimize, and document the complete prototype Deliverables • Complete ESP32 firmware source code • Schematic and component list • Safe voltage and current sensing design • HTTP/HTTPS communication implementation • Configuration menu (Serial/Captive Portal) • Setup guide and documentation

@shuvadeep003

Hi there, I can help build this ESP32-based appliance monitoring prototype with reliable power detection, voltage/current measurement, Wi-Fi connectivity, and real-time HTTP notifications. My approach would use dedicated energy-monitoring ICs (such as ATM90E32, HLW8032, or PZEM modules depending on accuracy and budget) to independently monitor all four outlets while maintaining safe isolation from mains voltage. The ESP32 will continuously read voltage, current, and power values, compare them against configurable thresholds, and instantly trigger HTTP GET/POST requests when activity is detected. Deliverables will include: • Clean, well-commented ESP32 firmware • Wi-Fi configuration via code and optional captive portal • Configurable thresholds per outlet • HTTP/HTTPS notifications with plug ID, voltage, watts, and timestamp • Event logging and serial debugging interface • Complete schematic and BOM • Safe mains-sensing recommendations and wiring documentation • Setup and testing guide Features: • Independent monitoring of 4 plugs • Real-time voltage and power reporting • Configurable trigger thresholds • Automatic Wi-Fi reconnection • JSON or query-string API support • OTA firmware update capability (optional) • Serial configuration menu for quick changes I have experience with ESP32, energy-monitoring circuits, IoT communication, and embedded firmware development, and can deliver a prototype that is easy to expand into a production design later. Best regards, Shuvadeep

@jabulanix

We've just completed a similar project, delivering a successful outcome for a client in the home automation category. Our team can help you achieve your goal with a smooth and professional process. We specialize in ESP32 development and have the expertise to create a smart plug prototype that meets your specifications. I am offering discounted pricing while building my profile on Freelancer.com. If the final work does not meet the agreed project scope and approved requirements, payment is not required. I'd love to chat about your project! The worst that can happen is you walk away with a free consultation. Regards, Jabu.

@akhilmazout1407

We have been building firmware and software end-to-end for home appliances and electric vehicles. We can do this project for you and deliver with utmost satisfaction.

@supunchinthana

Hi! I build ESP32 firmware regularly — current/voltage sensing, Wi-Fi event triggers, real-time data pipelines. I recently built an ESP32-CAM tracking rig where one ESP32 handled detection and a second handled actuation over a custom HTTP endpoint, so the "sense something → fire an HTTP call" pattern in this project is familiar territory for me. My approach: Current sensing via SCT-013 split-core sensors per outlet (non-invasive, no mains wiring broken — safer for you to retrofit existing plugs). One ZMPT101B for voltage, with synchronized ADC sampling so wattage is true RMS, not just current × nominal voltage. FreeRTOS task per channel so all four plugs are monitored independently, no blocking between them. Wi-Fi creds, thresholds, and endpoint URL configurable via a serial menu, stored in NVS so they persist across reboots. HTTPS GET/POST firing on threshold breach with plug ID, watts, and voltage in the payload. I'll also include a quick calibration step (known load → adjust scale factor) so your wattage readings are actually accurate rather than estimated from a datasheet. Deliverables: commented firmware, schematic + BOM with safety notes for working near mains, and a setup/test guide matching your acceptance criteria exactly. Available to start immediately.

@sanjeevg52

Hello, Do you require source code or without source beacuse you have mentioned anything related to source code. I can do this need some other details also from your end. If ok with quotes then we can disscuss. Thanks JAY

@nithish1980

i will use Peacefair PZEM-004T AC Multi-function Electric Energy Metering Power Monitor these sensor and an esp32 or 8266 at every plug .and real time and log data can be monitored via web in cloud .

@mevonicstechnol3

Hello, We are Mevonics Technologies Pvt Ltd, specializing in Embedded Systems, IoT Solutions, Firmware Development, Electronics Design, and Hardware Prototyping. After reviewing your requirements, we are confident in delivering the complete ESP32-based proof-of-concept solution. Our solution will include: • Independent monitoring of 4 appliance plugs • Real-time voltage and power consumption measurement • Configurable threshold-based event detection • Instant HTTP/HTTPS GET or POST requests to your specified endpoint • Transmission of plug ID, voltage, and wattage data in JSON or query parameters • Editable Wi-Fi credentials, endpoint URLs, and thresholds • Serial configuration menu and optional captive portal support Deliverables: ✓ Well-documented ESP32 firmware source code ✓ Complete schematic and BOM (Bill of Materials) ✓ Wiring and setup documentation ✓ Testing and deployment support Our team has extensive experience in ESP32 development, IoT devices, cloud integration, REST APIs, hardware design, and real-time monitoring systems. We focus on delivering reliable, scalable, and well-documented solutions that are easy to deploy and maintain. We are ready to start immediately and will provide regular progress updates throughout the project. We look forward to collaborating with you and bringing your concept to life. Best Regards, Mevonics Technologies Pvt Ltd Embedded Systems | IoT | AI Solutions | Product Development

@pasuvathiv

This milestone covers full delivery of the ESP32 4-channel power monitoring firmware and documentation, including: ✅ Firmware — Well-commented Arduino .ino file with: Independent ACS712 current + ZMPT101B voltage reading for all 4 plugs Real-time watts calculation per channel Configurable threshold per plug HTTP POST with JSON {plug_id, watts, voltage} on threshold trigger Serial menu for WiFi credentials, endpoint URL, and threshold config ✅ Schematic — Fritzing diagram showing safe 4-plug sensing circuit + PDF export ✅ Bill of Materials — Component list with part names, quantities, and sourcing links ✅ Setup Guide — Step-by-step PDF to flash firmware, wire hardware, and verify HTTP calls Payment to be released after client confirms: Firmware compiles and connects to WiFi ✔️ Voltage and wattage display correctly ✔️ HTTP call arrives with correct JSON on plug event ✔️

@TripleRrr

As someone with a strong background in mechatronics and extensive experience in designing and developing complex embedded systems exactly like the one you require, I can guarantee you high-quality results and excellent support throughout the entire project. I have deep knowledge of microcontroller programming, which is essential for this project as proficiency with ESP32 is crucial. My understanding of different methodologies to connect and control devices over Wi-Fi using HTTP/HTTPS GET or POST will ensure that the data received from each plug is accurately logged into your custom endpoint URL. Additionally, I will include a brief setup guide so that even without any prior technical knowledge about ESP32s or electronics assembly, you'll be able to confidently flash, wire, and test the prototype on your bench. In conclusion, my interdisciplinary skills in Mechatronics, Robotics, and AI combined with my expertise in Embedded Systems will perfectly suit your project requirements. With me on board, not only will you end up with a successfully functioning prototype but an empowering learning experience along the way. Let's create magic together!

@smrkh1

Hello, I am an Embedded Systems and IoT Engineer with experience in ESP32 development, sensor integration, Wi-Fi communication, and real-time monitoring systems. I can develop a complete ESP32 solution to independently monitor four household outlets, measure voltage and power consumption, and trigger HTTP/HTTPS requests whenever a configurable power threshold is exceeded. The firmware will support editable Wi-Fi credentials, endpoint URLs, and thresholds through code and can also include a simple serial configuration menu or captive portal for easier setup. Deliverables will include: • Well-documented ESP32 firmware • Safe current and voltage sensing schematic for four channels • Complete parts list (BOM) • Setup and testing guide • HTTP GET/POST integration with your server endpoint • Real-time reporting of plug ID, voltage, and power consumption My background includes IoT systems, embedded control, wireless communication, data acquisition, and sensor-based monitoring applications. I focus on reliable, maintainable code and practical prototype implementation. I look forward to discussing the sensing hardware and reporting requirements in more detail. Best regards.