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I’m developing a simple, rugged communication setup made of two parts: a master tablet and multiple wrist-worn receivers. The tablet must house a 5" × 8" screen in a water-resistant, shockproof and dustproof enclosure. Its job is to create a secure, long-range Wi-Fi hotspot that can simultaneously broadcast short alert/warning packets to every paired wrist device. Each wrist unit is a stripped-down smartwatch: stretch-fit elastic band (one-size-fits-all), minimal display showing only the incoming alert text or icon, and a silent vibration motor as the sole notification method. No other apps, sensors or functions are needed. As soon as the tablet sends an alert, every paired band should vibrate and show the message instantly. I need an end-to-end solution: • Electronics design and component selection for both tablet transmitter and wrist receiver • Firmware that handles the secure Wi-Fi link, message broadcast and vibration trigger • Enclosure and strap design ready for small-batch manufacturing • Working prototypes of at least one tablet and three bands, plus all CAD files, Gerbers, firmware source and build instructions for future scaling Acceptance will be based on: – Reliable connection at the specified range with at least 12 wrist units linked simultaneously – Immediate vibration on the receivers when an alert is sent – Tablet enclosure passing basic splash, drop and dust ingress tests – Bands fitting a range of wrist sizes comfortably If you have experience with custom wearables, low-power Wi-Fi modules and rugged tablet design, I’d love to see how you’d tackle this.
ID do Projeto: 40315184
19 propostas
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Ativo há 19 dias
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19 freelancers estão ofertando em média $15.708 USD for esse trabalho

With my background in Electrical Engineering and a Master's Degree in Embedded Systems, I have the skills and experience to offer you an end-to-end solution for your Long-Range Alert Wristband System. What sets me apart is my ability to merge hardware, software, and intelligent connectivity to provide robust embedded solutions. I specialize in firmware development and PCB design, making me the ideal candidate for this project. I've worked extensively with various microcontrollers including Stm32, NXP LPC, Raspberry Pi and Arduino - which will ensure reliable connections at the specified range with multiple wrist units simultaneously. My proficiency in low-power WiFi modules, such as ESP32, aligns perfectly with your requirement for a sustained battery life on the wristbands while maintaining immediate vibration notifications on receiving alerts. Additionally, my experience extends to CAD & Mechanical designing where I have created custom housings and production-ready enclosures; this will guarantee that both tablet and wristbands meet your ruggedness requirements successfully. Importantly, my commitment doesn't just lie in the completion of this project; I'll also deliver all the necessary CAD files, Gerbers and build instructions for future scaling - ensuring your investment grows efficiently.
$18.000 USD em 75 dias
8,2
8,2

As an experienced professional in the fields of electronics, embedded systems, and product design, I am confident that I can bring your visionary Long-Range Alert Wristband System to life. My expertise ranges from working with Arduino to navigating complex aspects of electronics development, such as digital motor control and power electronics- skills that are directly applicable to your project. Having designed and implemented Wi-Fi modules and wearable technologies before, I understand the intricacies involved in creating a reliable connection as well as achieving immediate triggers for a varied range of devices like yours. Additionally, my proficiency in PCB design (utilising Altium) ensures that your electronics setup is optimized using the best tools available while balancing durability with performance. Moreover, I am equipped to perform rigorous tests on prototypes to ensure that they meet essential criteria like splash resistance and dustproofing. My familiarity with CAD files and build instructions will facilitate future scaling when you decide to proceed beyond small-batch manufacturing. Ultimately, my commitment is to create a industry-leading solution that will satisfy your specific needs for this device.
$15.000 USD em 40 dias
7,4
7,4

Hello, I understand your requirement for a rugged tablet broadcasting instant alerts to multiple wrist receivers with guaranteed reliability and low latency. With 12+ years of experience in DCM, embedded systems, and firmware product design, I see the core challenge is achieving instant, synchronized alerts with low power consumption and stable connectivity. Using pure Wi-Fi on wearables will cause battery drain and connection instability. I propose a hybrid architecture: tablet with Wi-Fi + BLE broadcast, wrist units using ultra-low power BLE SoC (nRF52 series) for instant response. This ensures <100 ms alert latency, 12+ devices simultaneously, and long battery life. I will design complete electronics, optimized PCB, firmware, and robust communication protocol. Rugged IP-rated enclosure and ergonomic stretch-fit band will be designed for durability and comfort. You will receive working prototypes, full CAD, Gerbers, firmware, and scaling-ready documentation. I have delivered similar embedded and wearable systems with production-level reliability. Regards, Engineer Muhammad Usman, DCM and Firmware Product Expert
$15.000 USD em 7 dias
6,6
6,6

Since 2003 I am working in Digital Electronic. So more than 18 years of experience in Electronics. Arduino NANO/UNO/MEGA, ESP32 and Raspberry PI to build a digital device to read sensor data and send it to the web server, motor control, control relay switches and LEDs. More than 5(five) years of experience in Arduino design and build. If you want an excellent and error-free project delivery, then send a message to me, please. Have more than 10(years) years of experience in C/C++ to build Windows/Linux applications and micro-controller firmware building. If you want a good job delivery, then send a message to me, please. Since 1995 I have been working on Analog and Digital Electronics to build any kind of device. I have build lots of devices. So more than 20 years of experience on Electronics. Including power supply design. Any kinds of schematic and PCB design. Expert PCB design in EasyEDA Pro IDE.
$20.000 USD em 60 dias
6,6
6,6

As an experienced team specializing in custom wearable technology like the one you envision, Modular Solutions is excellently positioned to design and engineer your Long-Range Alert Wristband System. Our track record of satisfied clients and 5-star reviews across various freelance platforms, including Reddit, illustrates our unwavering commitment to delivering exactly what our clients want. We've successfully executed projects with similar requirements, such as designing low-power modules and connecting multiple devices via secure Wi-Fi networks. Our skillset in electronics expertise, encompassing both hardware design and firmware development, aligns directly with your project needs. In addition to constructing functional prototypes for your tablet transmitter and wrist receivers, we’ll provide all the necessary CAD files, Gerbers firmware source code, build instructions for future scalability. What’s more? We represent an end-to-end solution; from electronic component selection to the physical design ready for manufacturing; whether it be 3D printing of prototypes or efficient mass production. Together we can make your project not just a reality but a celebrated success story. Let’s chat!
$20.000 USD em 7 dias
6,4
6,4

⭐⭐⭐⭐⭐ ✅Hi there, hope you are doing well! I recently developed a rugged wearable alert system with custom wristbands and a secure central tablet communication hub, enabling seamless, real-time alerts over Wi-Fi. The critical factor in completing this project successfully is ensuring a robust, low-latency Wi-Fi connection that securely broadcasts alerts to all paired wrist receivers simultaneously. Approach: ⭕ I will design and prototype the custom electronics for the tablet and wristbands, selecting low-power, rugged Wi-Fi modules. ⭕ Develop firmware to manage secure broadcast messaging and vibration triggers. ⭕ Create waterproof, shockproof tablet enclosure and ergonomic stretch-fit wristband designs suitable for small-batch manufacturing. ⭕ Deliver working prototypes with full CAD, Gerber files, firmware source, and detailed assembly instructions. ❓ To tailor the design precisely, could you clarify the maximum communication range required and preferred materials for the band and tablet enclosure? I am confident my combined expertise in embedded design, rugged product development, and wearables will deliver an effective and scalable alert wristband system quickly and reliably. Best regards, Nam
$18.000 USD em 60 dias
0,0
0,0

Crescent, United States
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