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I’m building a pocket-sized IoT device that women can trigger in a threatening situation. The moment the panic button is pressed the prototype must: BestieGuard is a hidden wearable safety device developed for women, girl children, elderly people and individuals who travel or stay alone connected to an AI cloud server. The product consists of a compact hardware device with SOS button, GPS module, SIM module, rechargeable battery, PCB, enclosure, Bluetooth and a separate siren unit. (Both the hidden device and the siren box have separate chargeable batteries). The user can activate emergency mode by pressing the SOS button three times within a short duration. This reduces accidental triggering and enables rapid activation during panic situations. Once activated, the device triggers a Bluetooth connected loud siren that is kept in the hand bag to attract public attention and discourage the attacker. The siren enclosure also has a camera to click images an a voice recorder to record the surrounding voices. At the same time, the device communicates with the cloud server using its independent SIM module and transmits the live location of the user. The AI cloud server can support route monitoring, geofencing, movement tracking and behaviour-based risk detection. A mobile dashboard and administrative interface will support monitoring, escalation and future integration with emergency response systems. Safety confirmation is done by the user by long pressing the SOS button for more than 10 seconds to stop the siren and confirm safety when the emergency is resolved. If the user is unable to confirm safety, the system can escalate the alert to preconfigured contacts and response stakeholders. The proposed service model includes device sale, SIM connectivity, AI cloud monitoring and user support through a monthly subscription model. You’re free to select the microcontroller and sensor suite you’re most comfortable with, provided the final board fits inside a 60 × 40 mm enclosure and supports battery power. ESP32-based solutions are perfectly acceptable as long as BLE and Wi-Fi can run together for the siren link and data upload. Deliverables - Fully functional hardware prototype with materials and components - Schematic, BOM and Gerber files ready for fabrication. - Firmware with clear inline comments plus build instructions. - A lightweight companion Android demo app (Kotlin or Flutter) that pairs the siren, displays the live map position and forwards deactivation commands. - Post-flash acceptance test video proving every bullet feature works. I’ll handle the mechanical enclosure once the electronics are frozen, so keep connectors accessible. Feel free to suggest incremental milestones for hardware bring-up, firmware, and app hand-off.
Project ID: 40741884
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Hi, I can develop the **BestieGuard wearable safety device and companion Android app** as a complete embedded/IoT prototype. I have **16 years of embedded, IoT, GPS/GNSS and wireless R&D experience**, including completed **AIS-140 GPS trackers, vehicle telematics, compact battery devices and BLE/ESP32 products**. I can design the compact hardware within the **60 × 40 mm** constraint, with separate rechargeable batteries for the hidden device and siren. The design can include **SOS button, GPS, cellular/SIM, BLE, battery management, siren, camera and audio recording interfaces**. Firmware can handle **triple-press SOS activation, BLE siren triggering, GPS/location transmission, emergency-state management, 10+ second safety confirmation, battery monitoring and recovery logic**. I can also develop the **Flutter Android demo app** for BLE pairing, live location/map display and emergency deactivation, while keeping the architecture ready for your cloud/AI backend. Deliverables can include **schematic, BOM, Gerbers, PCB, commented firmware, build instructions, Android app and integrated acceptance-test video**. I recommend staged development: **hardware → PCB/prototype → firmware → GPS/cellular/BLE integration → Android app → complete testing**. Best regards, Subhash Suman Embedded | GPS/GNSS | ESP32 | BLE | Cellular | IoT | PCB Design
₹40,000 INR in 18 days
2.3
2.3
61 freelancers are bidding on average ₹68,791 INR for this job

Hi, I have experience in designing Circuits and can complete your project. I have expertise in the following: 1- Designing schematic and PCBA 2- Ordering the PCBA and getting boards manufactured. 3- Writing firmware for the PCBA to make sure everything works as expected. 4- I can also develop smartphone apps to communicate and control the hardware. If you wish we can discuss in chat. Thank you.
₹56,250 INR in 7 days
7.5
7.5

Hi there, I carefully reviewed your BestieGuard wearable safety-device concept, including the triple-press SOS activation, GNSS/SIM connectivity, BLE-linked siren unit, rechargeable batteries, camera/audio peripherals, cloud communication, and the 60 × 40 mm electronics constraint. I am a mechatronics engineer with almost half a decade of experience in embedded electronics, compact PCB design, power supplies, hardware prototyping, sensors, and communication interfaces such as UART, USB, SPI, I2C, and similar embedded systems. My background is well suited to developing the hardware architecture, integrating the wireless and positioning modules, managing battery-powered operation, and producing a manufacturable PCB and prototype. Because embedded hardware, PCB development, and system integration are already part of my core skillset, I can approach the prototype efficiently while keeping power consumption, connector access, wireless integration, component availability, and future enclosure integration in mind. Please send me a message so we can discuss the project and start. Best regards, Samuel tshibangu
₹56,250 INR in 7 days
6.5
6.5

Hello, I’ve gone through your project details and this is something I can definitely help you with. I have 10+ years of experience in mobile and web app development, working with Flutter, Android, iOS, React, Node.js, and APIs. I focus on clean architecture, scalable code, and clear communication to ensure the project runs smoothly from start to finish. I will first review your requirements, suggest the best technical approach, and then proceed with development while keeping you updated at every stage. Here is my portfolio: https://www.freelancer.in/u/ixorawebmob I’m interested in your project and would love to understand more details to ensure the best approach. Could you clarify: 1. Do you need this for mobile, web, or both? 2. Do you already have UI/UX designs or should we create them? 3. Will there be any third-party API or payment gateway integration? 4. What is your expected timeline for completion? 5. Are there any reference apps or websites you like? Let’s discuss over chat! Regards, Arpit Jaiswal
₹62,440 INR in 26 days
7.4
7.4

Greetings of the day, I can help build the BestieGuard prototype with an ESP32-based controller, SOS logic, BLE siren communication, GPS/SIM connectivity, camera/audio integration, cloud location tracking, and the companion Android app. I can also provide the schematic, BOM, Gerbers, firmware, app source, build documentation, and acceptance-test video. I’m an IoT/mobile developer with 9+ years of experience, including BLE, GPS, IoT hardware integration, Flutter/Kotlin, Firebase, and cloud-connected mobile systems. I’m comfortable structuring this in milestones covering hardware bring-up, firmware/BLE, cloud communication, mobile app, and final integration/testing. I can review the exact hardware requirements and propose the most suitable components for the 60×40 mm board. Best Regards, Shubham Jain
₹55,000 INR in 7 days
6.2
6.2

Hello, I trust you're doing well. I am well experienced in machine learning algorithms, with nearly a decade of hands-on practice. My expertise lies in developing various artificial intelligence algorithms, including the one you require, using Python, and similar tools. I have worked with pytorch, and tensorflow to develop DL models, .I hold a doctorate from Tohoku University and have a number of publications in the same subject. My portfolio, which showcases my past work, is available for your review. Your project piqued my interest, and I would be delighted to be part of it. Let's connect to discuss in detail. Warm regards. please check my portfolio link: https://www.freelancer.com/u/sajjadtaghvaeifr
₹56,250 INR in 7 days
6.4
6.4

Hey there! I’m Alok, A PCB, Circuit and Mechanical designer with a passion for turning ideas into rock-solid, high-performance circuit boards. even expert on Python, C, C++ With nearly a decade of experience, I’ve tackled everything from compact consumer gadgets to complex industrial systems—always with a focus on precision, efficiency, and reliability. # Schematic & Layout Design – Clean, optimized, and manufacturable. # Component Selection & Library Management – No surprises, just the right parts for the job. # Reverse Engineering – PCB cloning, replication, and improvements. # Gerber, BOM & CPL Generation – Ready for seamless production. # DFM & DFA Expertise – Because great design means smooth manufacturing. # Multi-Layer, Flex, & High-Density PCB Design – Whatever the project needs. If you need a PCB and Code that’s efficient, reliable, and built for real-world performance, let’s chat. I’d love to help bring your project to life!
₹56,250 INR in 7 days
5.9
5.9

Dear Client, I read "Women’s Safety IoT Prototype Development" carefully and understand you want a single Flutter codebase that runs smoothly on both Android and iOS. My hands-on experience with Mobile App Development, AI (Artificial Intelligence) HW/SW aligns directly with what you need. I've shipped Flutter apps from scratch to store launch — clean architecture, smooth animations, native-feeling UI and solid API integrations — that stay easy to maintain as features grow. A few quick questions to get us started: 1. Do you need Android, iOS, or both from day one? 2. Are UI designs ready, or should I design the screens as well? 3. Is there an existing backend/API, or should I build that too? Thanks & Regards, Deepak
₹48,750 INR in 14 days
5.2
5.2

As a highly skilled electronics engineer and AI specialist, I'm excited to throw my hat in the ring for your Women's Safety IoT Prototype. My team at MOHD SADAB specialize in not just developing prototypes but in building structured, efficient, and production-ready systems. We have distinct capabilities in implementing AI into ERP workflows as well as reading live sensor data and acting upon it in real-time, which is essential for the smooth functioning of your proposed safety wearable. Speaking further on our relevant skills, we have a strong grasp on the complete stack you've mentioned - React, Flutter, Django, Node - that coupled with our ability to deliver across AWS, GCP, and Azure sets us apart. Combining this with our hardware expertise spanning PCB design, ESP32/STM32 firmware and MQTT-connected sensor network ensures we are not only comfortable with the microcontroller and sensors required but can exceed your expectations.
₹56,250 INR in 7 days
5.2
5.2

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
₹56,250 INR in 7 days
5.3
5.3

Hi, I am in Chennai. I am have 18+ years in embedded system development. Have you selected the GPS, SIM module to be used? I can meet in person and discuss as well Regards Senthil Kumar
₹90,000 INR in 90 days
5.0
5.0

Having spent almost a decade developing mobile applications with a focus on quality and reliability, I'm confident that my skills in Mobile App Development - particularly in Android using Kotlin or Flutter which aligns with this project - fit perfectly with what you need. My experience extends into optimizing code for efficient use of limited resources such as battery and connectivity. Moreover, I'm familiar with managing large amounts of data using cloud services and APIs, making me a great asset in integrating your SOS device with the AI cloud server. Additionally, with my extensive web development background in HTML/HTML5/CSS/Responsive Design, I can ensure that the companion app accurately displays the live map position and forwards deactivation commands as required. Finally, my past work has always prioritized user security and satisfaction, just like what your project endeavours to achieve. Women's safety is a cause that needs urgent attention and technological solutions like the one you've designed could serve as a deterrent to potential attackers while providing peace of mind for users. I would be honored to be part of that effort and deliver more than just a hardware prototype - a comprehensive solution that keeps your vision intact.
₹56,250 INR in 7 days
5.2
5.2

Hi, Greetings! I am interested in working on your project. Could you please share the design details and technical requirements so we can discuss the project scope and key parameters in detail? I look forward to working with you. Thank you! Shivkant
₹56,250 INR in 7 days
4.7
4.7

✔ I deliver 100% work — 99.9% is not for me. ✔ Workflow Diagram Requirements Audit ⟶⟶ MCU/GPS/SIM Selection ⟶⟶ PCB Design ⟶⟶ SOS Firmware ⟶⟶ BLE Siren Link ⟶⟶ Cloud/GPS Integration ⟶⟶ Android Demo App ⟶⟶ Prototype Testing ⟶⟶ Handover Key Highlights ✔ Compact 60×40 mm battery-powered PCB ✔ ESP32/nRF-class MCU selection ✔ GPS + cellular/SIM connectivity ✔ Triple-press SOS detection with debounce ✔ 10+ sec long-press safe deactivation ✔ BLE-linked siren control ✔ Separate battery systems for main unit/siren ✔ Camera/voice-capture integration planning ✔ Live location + geofencing/cloud telemetry ✔ Flutter/Kotlin Android demo app I’ll first freeze the power budget, enclosure constraints, cellular/GNSS module, siren interface and emergency-state logic before PCB layout. Safety-critical actions will be designed with watchdogs, retries, battery monitoring and clear fallback behavior. Best Regards, Asad Embedded Systems | IoT | PCB | BLE | GPS | Mobile Apps
₹40,000 INR in 22 days
4.7
4.7

As a seasoned mobile app developer with comprehensive knowledge in various platforms including Kotlin and Flutter, I'm confident that BestieGuard will not only align with my skillset but also leverage from it for a successful project. With 10 years in the field, I've built solutions that implement complex technology like GPS modules and data transfers that resonates with your project description. Moreover, my proficiency in AI and Machine learning will undoubtedly help enhance the functionalities you have listed. Additionally, my experience in AWS and Azure networks will come into play while connecting the product to an AI cloud server as well as implementing route monitoring and geofencing features.
₹37,500 INR in 3 days
4.0
4.0

As an accomplished Full Stack Developer with a strong emphasis on mobile applications, I believe my expertise aligns perfectly with your significant and important project. My proficiency in Flutter and Kotlin will be significant assets in the creation of the lightweight companion Android demo app you have specified, which is designed to ensure the best possible user experience by managing key functionalities such as live map position display and forwarding deactivation commands efficiently. Additionally, my experience with REST API development ensures that your app would have seamless integration capabilities. Moreover, my knowledge of Laravel, React.js, and Node.js can prove instrumental not only in fabricating your product but also in building a robust backend system to support your proposed service model - including device sale, SIM connectivity to cloud server monitoring, escalation and even future emergency response integration. It would be my utmost priority to develop a fully functional hardware prototype precisely as per your requirements whilst ensuring long-term maintainability. The firmware would come with clear inline comments; build instructions; accompanying Schematic, BOM and Gerber files ready for fabrication. Finally, my understanding and skills in scalable backend systems paired with delivering secure, high-performance applications will ensure a reliable IoT
₹56,250 INR in 7 days
4.1
4.1

I m 20+ year experience electronics engineer, mainly working on circuit design and embedded MCU firmware development. I m good at wireless / wired communication application like BLE, IoT, CAN, UART……..etc I carefully reviewed your project and its well suited with me, circuit design, firmware development, PCB prototype, actually I have a similar project before, a smart watch with SOS function: crash detect, GNSS tracking, LTE-M connected alert, more information can share during chatting. My working base in Hong Kong, smooth in communication and good environment to sourcing from China Please send me a message so we can discuss the project and start immediately
₹60,000 INR in 30 days
4.2
4.2

With experience in developing wearable safety devices, I understand the importance of creating a reliable IoT device for personal security. I have expertise in integrating SOS buttons, GPS modules, and SIM modules to enable quick responses in emergency situations. How crucial is the device's battery life in ensuring continuous protection for the user? Regards, Yogesh Kumar
₹43,560 INR in 6 days
3.8
3.8

Hello, I am Santosh Chaulagain, a professional Electrical Engineer and PCB Designer with over 7 years of experience in schematic design, PCB layout, and embedded systems, including ESP32, IoT devices, analog and digital circuits. I have successfully completed multiple projects for clients worldwide, delivering reliable and manufacturable designs. I have carefully reviewed your project requirements and I am confident that I can provide a high-quality solution tailored to your needs. AND I HAVE DESIGNED SIMILAR TYPE OF THE DEVICE FOR CHILDREN SAFETY FOR MY ANOTHER INDIAN CLIENT WITH COST AND POCKET FRIENDLY SIZE. I focus on clear communication, timely delivery, and customer satisfaction. I am happy to discuss your project in detail and provide revisions until the final result meets your expectations. Looking forward to working with you. Best regards, Santosh C. Electrical Engineer | PCB Designer | ESP32 & IoT Specialist
₹37,500 INR in 7 days
3.8
3.8

The critical part of BestieGuard is making the emergency state deterministic: a triple SOS press must reliably activate the siren, location reporting and cloud workflow, while a long press must safely cancel or escalate depending on the current state. I’d approach the prototype as three coordinated layers: Hardware Select a suitable low-power MCU/module, GPS and cellular modem, battery/power management and BLE interface while keeping the PCB within the 60 × 40 mm constraint. I’d leave accessible connectors/test points so bring-up and debugging remain practical. Firmware Implement: Triple-press SOS detection with debounce/time window BLE connection to the separate siren unit Siren activation and reliable command acknowledgement GPS acquisition and location transmission Cellular/cloud communication with retry handling Long-press safety confirmation Battery/power-state monitoring Clear emergency/session state machine Watchdog and recovery handling Logging/debug interfaces for testing
₹56,250 INR in 7 days
2.7
2.7

Hi, I have extensive experience engineering custom IoT hardware, embedded sensor pipelines, and secure cloud platforms, so I can definitely help you design, build, and deploy the entire BestieGuard ecosystem. Your system design is solid using a 3-tap SOS sequence on the wearable prevents accidental triggers while instantly triggering the handbag siren unit over Bluetooth. Simultaneously, the onboard SIM and GPS modules will connect to the backend to transmit live location tracking, audio recordings, camera snapshots, and trigger real time AI risk analysis. I will take care of the entire end-to-end development, including the hardware PCB design, firmware logic (Bluetooth pairing, SOS detection, battery management, AI behavior detection), and the administrative/mobile dashboard for emergency escalation. Let's chat so we can discuss the exact components, hardware, cloud server specs, and roadmap to make this device.
₹43,000 INR in 15 days
3.0
3.0

Chennai, India
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