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Lead Mechatronics / Product Development Engineer Lead Mechatronics Engineer - Smart Interactive Hardware Prototype Project Description: We are developing HappyMat(TM) Prototype #1, a smart interactive doormat incorporating sensors, a digital display, addressable LED lighting, wireless connectivity, camera/audio components, embedded electronics, and a custom physical structure. We are seeking an experienced Lead Mechatronics / Product Development Engineer to serve as the technical lead and primary system integrator. You will collaborate with other HappyMat specialists, including embedded/firmware, mechanical/CAD, prototype fabrication/electronics, and IoT/interface development. Primary Responsibilities: • Define the overall prototype architecture. • Coordinate technical decisions across the engineering team. • Integrate sensors, display, LED lighting, camera/audio, controller, wireless connectivity, and mechanical components. • Coordinate technical integration with the other HappyMat team members. • Help select practical off-the-shelf modules where they reduce cost and development time. • Lead troubleshooting and integration testing. • Lead the final functional demonstration. • Deliver applicable engineering files and documentation. Preferred Skills / Experience: Mechatronics; Product Development; Embedded Electronics; Sensors; ESP32/MCU Systems; Displays; Addressable LEDs; Wi-Fi/Bluetooth; Camera/Audio Integration; Troubleshooting; Hands-On Prototyping COMPENSATION - $700 USD FOR THIS TEAM MEMBER Fixed Price: $700 USD for this individual position. The selected professional for this position will receive $700 USD total for successful completion of the complete assigned scope. HappyMat is assembling a multidisciplinary engineering team. Each team member is hired separately and each team member receives their own $700 USD fixed payment for their individual assigned scope. The $700 payment is NOT shared or divided among the engineering team. This is a fixed-price project, not an hourly position. How to Apply: Begin your proposal with HAPPYMAT. Describe one physical product or functional prototype you personally helped build. Explain exactly what you contributed and provide photos or video if available. NDA required before confidential HappyMat technical information is shared. Teamwork requirement: The selected professional must communicate reliably with the other HappyMat team members, participate in integration and testing as applicable, and deliver all project-specific work files associated with the assigned role.
Project ID: 40745528
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80 freelancers are bidding on average $517 USD for this job

Hi, I am an embedded systems and mechatronics engineer with over 16 years of experience developing connected, consumer-grade products from initial concept through prototyping, system integration, testing, and production preparation. I have extensive hands-on experience with ESP32/MCU platforms, sensors, displays, addressable LEDs, Wi-Fi/Bluetooth, embedded electronics, camera/audio modules, and custom mechanical assemblies. I can serve as the technical lead for HappyMat Prototype #1, define a practical system architecture, select suitable off-the-shelf modules, establish clear interfaces between each specialist's work, and coordinate integration across firmware, electronics, mechanical design, fabrication, and IoT development. I will also lead troubleshooting, integration testing, the final functional demonstration, and preparation of the applicable engineering documentation and handover files. My approach will focus on reducing integration risk early through interface definitions, power and communications planning, staged subsystem validation, and a clear acceptance checklist. I can also support firmware and electronics development directly wherever needed to keep the prototype moving. Could you share the current team composition, target mat dimensions, intended display type, power source, and any modules already selected? Please contact me to discuss details.
$700 USD in 14 days
7.7
7.7

Hi, I understand you need a technical lead to bring the HappyMat prototype together as one working system. I can help define the hardware structure, connect the sensors, display, addressable LEDs, camera/audio parts, wireless modules, and microcontroller, while keeping the design practical for a first prototype. My approach will be to review the required functions, choose suitable off-the-shelf modules, map power and signal connections, and coordinate integration with the firmware, mechanical, fabrication, and IoT team members. I will also help test each subsystem, find and fix integration problems, and prepare clear engineering files and notes for the final demonstration. I will focus on reliable communication between the Electronics and Microcontroller sections, careful system-level Engineering decisions, and hands-on Troubleshooting during testing. What functions must be fully demonstrated in Prototype #1, and which components or modules have already been selected? Please share the current block diagram, selected components, and prototype schedule so I can confirm the best integration plan.
$750 USD in 11 days
6.9
6.9

HAPPYMAT Hi, I’m a Mechatronics and Embedded Engineer with 5+ years of experience developing and integrating physical products combining mechanical systems, electronics, sensors, embedded controllers, wireless connectivity and IoT. One relevant prototype I personally worked on was a smart stroller monitoring system using an ESP32, multiple sensors, BLE connectivity, battery/USB-C power, and a custom 3D-printed mechanical mounting system. I was involved in the system architecture, electronics integration, sensor connectivity, mechanical integration and prototype testing. I have also developed ESP32/STM32-based IoT products involving sensors, wireless communication, displays/interfaces, power management and real-world hardware troubleshooting. For HappyMat, I can take responsibility for the overall prototype integration, including: - System architecture and component selection - ESP32/MCU integration - Sensors and I/O - Addressable LED systems - Display integration - Wi-Fi/Bluetooth connectivity - Camera/audio hardware integration - Power and electrical integration - Mechanical/electronic integration - System-level troubleshooting and testing - Final functional demonstration - Engineering documentation and handover Best regards,
$1,500 USD in 25 days
6.7
6.7

HAPPYMAT I understand you need a lead engineer to turn multiple hardware subsystems into one reliable, working interactive prototype. I have hands-on experience with embedded electronics, ESP32/MCU systems, sensors, displays, addressable LEDs, wireless connectivity, and product-level PCB integration. One relevant prototype I have worked on involved integrating an MCU, sensors, communication interfaces, power electronics, and custom PCB hardware into a functional system. My contribution included hardware architecture, component selection, schematic/PCB development, firmware-hardware interfacing, debugging, and functional testing. For HappyMat, I can define the system architecture and make sure the electronics, mechanical structure, sensors, display, LEDs, camera/audio, and wireless modules work together reliably. I can also select practical off-the-shelf modules where they reduce development time and prototype cost without compromising the intended functionality. I will coordinate closely with the firmware, mechanical, fabrication, and IoT team members and maintain clear technical documentation. I am comfortable working under NDA and can provide project-specific schematics, integration documentation, and other engineering files required for the prototype. I understand the fixed $700 project scope and am ready to work collaboratively with the HappyMat team. Regards, Engr Muhammad Usman
$500 USD in 7 days
6.9
6.9

Hi there, HAPPYMAT — I carefully reviewed your Lead Mechatronics / Product Development Engineer role for Prototype #1, including system architecture, sensors, display, addressable LEDs, camera/audio, wireless connectivity, embedded electronics, and coordination across the multidisciplinary engineering team. I am a mechanical engineer specialized in mechatronics with almost half a decade of experience in embedded electronics, PCB design, hardware prototyping, sensors, power systems, and interfaces such as UART, USB, SPI, I2C, SDIO, PCIe, I2S, and related embedded technologies. My background combines mechanical, electronic, and embedded-system development, which is directly relevant to a technical integration role like this. Because mechatronics, electronics, prototyping, and system integration are already part of my core skillset, I can contribute efficiently to architecture definition, component/module selection, cross-team technical coordination, troubleshooting, integration testing, and final prototype bring-up. I am also comfortable working under an NDA and collaborating closely with firmware, CAD, fabrication, and interface developers. Please send me a message so we can discuss the project and start. Best regards, Samuel tshibangu
$500 USD in 1 day
6.5
6.5

HAPPYMAT! As an engineer with a rich blend of experience in electronics, mechanical engineering, and mechatronics, I believe I am the perfect fit for your team. My skills and expertise in product design and prototyping have been instrumental in the development of a wide range of physical products. One notable project I personally contributed to was the design and construction of a smart home automation system that integrated sensors, cameras, displays, wireless connectivity, and embedded electronics. This experience aligns perfectly with the smart interactive doormat you are seeking to create. Moreover, I bring to the table an in-depth understanding of CAD design and technical documentation which will be highly valuable as the technical lead and system integrator for your project. In previous roles, I have successfully coordinated technical decisions among cross-functional teams to achieve optimal outcomes within budget and time constraints.
$266 USD in 1 day
6.1
6.1

I am a mechatronics/electronics engineer experienced in developing physical prototypes that combine MCU control, sensors, displays, addressable LEDs, wireless connectivity, power electronics, and mechanical integration. I have led prototype development from system architecture and component selection through PCB/hardware integration, troubleshooting, and final functional validation. Approach: ✅ I will define the complete ESP32/MCU-based architecture, interfaces, power requirements, and integration boundaries for each HappyMat subsystem. ✅ I will select practical sensors, display, LEDs, camera/audio, and wireless modules while coordinating electrical and mechanical requirements with the other engineers. ✅ I will lead prototype integration, debug power/interface/communication issues, and establish systematic subsystem and full-system test procedures. ✅ I will document the architecture, wiring/interfaces, component selections, integration requirements, and final test results. Questions: ✅ What display, camera, sensor, and physical mat dimensions have already been selected or constrained? ✅ Will I be responsible for PCB/electrical design directly, or primarily system architecture and integration of work delivered by the electronics specialist? ✅ What functions must be demonstrated for Prototype #1 to be considered successfully completed? Best, Yaroslav
$500 USD in 7 days
5.6
5.6

HAPPYMAT ⭐️⭐️⭐️⭐️⭐️ Hi, I’m interested in taking the technical lead for the HappyMat prototype and coordinating the electronics, embedded, sensors, wireless, display/LED, camera/audio and mechanical integration into one working system. My approach would be to first define the system architecture and interfaces, then identify practical off-the-shelf modules where they can reduce development time. I can coordinate closely with the other team members, troubleshoot integration issues, manage testing and help prepare the final functional demonstration. Relevant prototype: [INSERT YOUR REAL PHYSICAL PRODUCT/PROTOTYPE] — I personally contributed [YOUR EXACT CONTRIBUTION: electronics/system integration/firmware/mechanical integration/testing]. Photos/video can be provided if available. I’m comfortable working across disciplines and keeping the prototype practical rather than over-engineering individual subsystems. I’ll also maintain clear documentation and deliver the project-specific engineering files required for the next development stage. I’m ready to work collaboratively with the HappyMat team
$500 USD in 7 days
5.8
5.8

HAPPYMAT Hello, I have experience developing physical products and functional prototypes involving mechanical design, embedded electronics, sensors, microcontrollers, displays, LEDs, wireless connectivity and hands-on system integration. I have worked with Fusion 360, ESP32-based systems, electronic modules and prototype fabrication, with attention to making different hardware components work together reliably. For HappyMat, I can take responsibility for the overall prototype architecture and coordinate the integration between the embedded, mechanical, electronics and IoT work. I can help select practical off-the-shelf components, define the interfaces between the subsystems, troubleshoot integration issues and validate the complete prototype through functional testing and demonstration. I would begin by reviewing the requirements and existing work from the other team members, then establish the hardware architecture, component interfaces and integration requirements before assembling and testing the complete system. I will keep the other specialists aligned through clear technical communication and provide the relevant engineering files and documentation for my assigned work. I’m comfortable working under an NDA and collaborating with a multidisciplinary team throughout integration and testing. Regards
$250 USD in 3 days
5.8
5.8

Hi, how are you doing? I went through your project description and I can help you in your project. your project requirements perfectly match my expertise. We are a team of Expert Mechanical design Engineers, we have successfully completed 1000+ Projects for multiple regular clients from OMAN, UK, USA, Australia, Canada, France, Germany, Lebanon and many other countries. We are providing our services in following areas: Product Design | 3D CAD Modelling Finite Element Analysis | Computational Fluid Dynamics Thermal analysis | Structural analysis HVAC and Heat load calculation Structural Analysis We are proficient in using following software’s: AUTOCAD SOLIDWORKS ABAQUS ANSYS APDL | ANSYS Fluent MATLAB | SIMULINK COMSOL Multiphysics FUSION360 | CATIA We have good command over REPORT WRITING, we can show you many samples of our previous reports. We can discuss further details in the message box.
$500 USD in 7 days
6.0
6.0

HAPPYMAT Hello, The main challenge here is integrating pressure sensors, a digital display, addressable LED lighting, ESP32 Wi-Fi and camera/audio into one mat-thickness envelope, on one bus and one current budget, without the subsystems fighting each other. With 15+ years of experience, I focus not only on developing the electronics and firmware, but also on making the overall development process clear, practical, and reliable for the client. Prototype I personally built: an ESP32 monitoring and control unit - custom PCB with SHT/pressure sensors on I2C, 8 addressable WS2812 outputs, a 2.4" SPI TFT, capacitive touch keys, Wi-Fi MQTT telemetry to a host over RS485, and an audio alarm driver. I did the schematic, the layout, every driver, the task scheduler, and bench and enclosure bring-up. Photos and video available on request. I can provide you with a working, integrated build for integration testing and the functional demonstration, using Altium Designer and C/C++ firmware, specifying off-the-shelf ESP32-S3, TFT and audio modules wherever they cut cost and schedule, and going custom PCB only where size, current draw or connector count demands it. Week 1 deliverable shared with the team: architecture, BOM, pin map, power budget, bus plan and interface contracts with your firmware and mechanical specialists. NDA signed before any HappyMat technical detail is discussed. Best regards, Hamza
$250 USD in 3 days
5.4
5.4

Hello HappyMat This is Mohand, a professional engineer with experience in mechatronics, mechanical and electrical design, embedded systems, and product development. I can help define the prototype architecture and integrate sensors, ESP32-based controls, displays, addressable LEDs, wireless connectivity, and mechanical components into a coordinated functional system. I’m comfortable collaborating with multidisciplinary teams, troubleshooting integration issues, and documenting engineering decisions. My deliverable and simple scope: ☐ Develop the system architecture, component integration plan, and technical interface documentation ☐ Coordinate hardware integration, testing, troubleshooting, and functional demonstration ☐ Deliver project-specific engineering files, integration notes, and final documentation I’m comfortable working under an NDA and coordinating directly with the other HappyMat specialists. I can also review the assigned scope against the $700 fixed budget and agree on clear completion criteria before starting. Main question for project: Which components and subsystems are specifically assigned to this lead engineer role, and what has already been selected or developed? Is there an existing prototype, system architecture, or integration schedule available for review? Thank you.
$700 USD in 7 days
5.1
5.1

HAPPYMAT I have 11+ years of software and product development experience and can take the lead on system architecture and integration for your HappyMat prototype. I can coordinate the ESP32/MCU, sensors, display, addressable LEDs, Wi-Fi/Bluetooth, camera/audio, power and mechanical interfaces, while working closely with the firmware, CAD, electronics and IoT team members. I will focus on practical module selection, integration testing, troubleshooting and a reliable final demonstration. I have worked on connected hardware/IoT prototypes involving embedded controllers, sensors, wireless communication and software integration. I can also provide clear technical documentation and ensure all components work together as one system. I understand this is a fixed $700 scope and I am comfortable working collaboratively with the other HappyMat specialists under NDA. Thanks, Christina
$300 USD in 7 days
5.1
5.1

Hello, I checked project in detail. In my opinion, I would define a clear system architecture first, then integrate the electronics, sensors, display, LEDs, camera/audio, wireless modules, and mechanical structure as one reliable prototype. I would also prioritize practical off-the-shelf modules where they can reduce development time while keeping the system easy to troubleshoot and expand. This project is very similar to my previous works. I have experience building and integrating embedded hardware prototypes involving ESP32 controllers, sensors, LEDs, displays, wireless communication, and custom electronics. My role would focus on coordinating the different subsystems and solving integration issues during testing. The most important skill is system-level integration. I will maintain clear interfaces between the electronics, firmware, mechanical assembly, and IoT components so the complete prototype works reliably together. So, I will divide your project into three major steps. 1️⃣ Define the system architecture and interfaces between all subsystems. 2️⃣ Integrate and troubleshoot the electronics, sensors, LEDs, display, wireless, camera/audio, and mechanical components. 3️⃣ Complete functional testing, demonstration, and deliver the applicable engineering files and documentation. Via private chatting or meeting, I will provide the creative idea and good tech solution for your project. Best regards. Maksym
$500 USD in 7 days
5.0
5.0

Hi, I am a Mechanical Design Engineer and co-founder at Vutuk Design and Media. We specialize in mechatronic system design, smart device prototyping, PCB integration, 3D CAD enclosure modeling, and DFM using SolidWorks, Fusion 360, and KiCad. Leading a smart product design requires cohesive integration between mechanical actuators/housings, embedded electronics, sensor selection, and firm packaging constraints. We bring end-to-end expertise across multi-material enclosure engineering (FDM/resin prototyping to plastic injection molding), thermal management, cabling/connector routing, and hardware validation. A few quick technical questions to align with your smart product architecture: What primary electronic components (e.g., custom PCB vs. off-the-shelf boards, motors/actuators, sensors, battery pack) need to be integrated into the mechanical enclosure? Are there specific IP ratings (e.g., dust/water resistance), drop test standards, or tactile ergonomic requirements for the outer housing? Are you looking for complete turnkey hardware engineering (from schematic/PCB design review to 3D CAD modeling and physical prototype testing), or purely mechanical/enclosure integration? Looking forward to discussing your smart product architecture and bringing it to life! Best regards, Ashraf Ali Shaikh
$500 USD in 7 days
5.1
5.1

**HAPPYMAT** HappyMat Prototype #1 requires strong coordination between **hardware, firmware, mechanical design, and IoT systems** to turn multiple components into one reliable product. I can lead the system integration, define the overall architecture, and coordinate the ESP32/MCU, sensors, LEDs, display, Wi-Fi/BLE, camera/audio, and mechanical interfaces. I’ll work closely with each specialist to resolve integration issues, select practical off-the-shelf modules where appropriate, and lead functional testing through the final prototype demonstration. My focus will be on **reliability, practical component choices, clear technical documentation, and efficient teamwork** to keep Prototype #1 moving without unnecessary complexity. I understand the **$700 fixed-price scope, NDA, team collaboration, testing, and complete project-file handover requirements.** For the requested prototype example, I’ll provide a genuine relevant project and clearly describe my exact contribution.
$500 USD in 7 days
5.2
5.2

I understand you're looking for a technical lead to integrate complex mechatronic systems for HappyMat™ Prototype #1, similar to my experience integrating sensor arrays and custom control logic for interactive public art installations. My background in bringing together disparate hardware components into a cohesive, functional system aligns perfectly with your need for a primary system integrator. My approach will involve a phased integration strategy. Initially, I'll focus on establishing robust communication protocols between the sensor suite, embedded controllers (likely an ESP32 or Raspberry Pi depending on processing needs), and the LED/display drivers. We'll then layer in the wireless connectivity and camera/audio processing, ensuring real-time data flow and responsiveness. Version control with Git and CI/CD pipelines for firmware will be employed to manage complexity and ensure stability throughout development. Given the diverse components, how are you currently managing the power budget for the prototype? Also, what are your primary performance metrics for the interactive response time? I'd be happy to discuss these details further and outline a more specific integration roadmap.
$616 USD in 21 days
4.7
4.7

HAPPΥΜΑΤ Hi, I have 9+ years of experience in 3D CAD modeling, mechanical design, SolidWorks, and industrial product development. I can create accurate, manufacturing-ready custom plastic industrial rollers with proper dimensions, tolerances, and detailed CAD files. I can also provide 3D models, technical drawings, and STEP/STL files as required. I focus on precision, functionality, and easy manufacturing. I’m ready to start immediately and can deliver high-quality work with revisions until you are satisfied. Thank you!
$699.99 USD in 3 days
4.7
4.7

✅✅✅✅✅ HAPPYMAT I’m interested in taking the Lead Mechatronics role because this project needs someone who can look at the entire prototype as one system, not just one PCB or firmware block. A relevant prototype I’ve worked on involved integrating an ESP32-based controller with sensors, wireless communication, power electronics, user-interface elements and physical hardware. My contribution covered system architecture, component/interface decisions, electronics integration, troubleshooting and bringing the complete system together for testing. For HappyMat, I would establish the system architecture and clear interfaces between the embedded, mechanical, electronics and IoT team members. I’d coordinate practical choices for the ESP32/MCU, sensors, display, addressable LEDs, camera/audio and power system, using off-the-shelf modules where they reduce development risk. My workflow would be: Define architecture, interfaces and power requirements. Coordinate component/module selection and integration. Resolve hardware, firmware and mechanical integration issues. Lead functional testing and troubleshooting. Document the final prototype and support the demonstration. I’m comfortable working collaboratively with multidisciplinary teams and communicating technical decisions clearly. I can also provide organized project files and integration documentation throughout the build. I’m ready to work under NDA and coordinate closely with the other HappyMat engineers.
$500 USD in 7 days
4.4
4.4

HAPPYMAT My name is Collins, I am a Mechatronics and Product Development Engineer with extensive hands-on experience leading multi-disciplinary teams to integrate sensors, displays, addressable LEDs, wireless MCUs (ESP32), and custom enclosures into reliable physical prototypes. Relevant Experience: I served as Lead Mechatronics Engineer for a smart interactive hardware enclosure. I architected the system around an ESP32, integrating time-of-flight motion sensors, WS2812B addressable LED rings, an SPI display, and a camera/mic module. I personally developed the system architecture diagram, selected off-the-shelf breakout boards to keep costs down, directed the PCB layout, and led the cross-functional integration testing. The result was a fully functional, field-tested interactive prototype delivered on schedule. How I Will Lead HappyMat Prototype #1: System Architecture: Define a robust, modular block diagram balancing power budget, signal integrity, and component placement for the smart doormat form factor. Team Coordination: Lead technical alignment across firmware, CAD, fabrication, and UI specialists, ensuring seamless interface definitions. Integration & Testing: Coordinate hands-on troubleshooting, COTS module selection, and functional verification, driving the project to a successful final demonstration. I am ready to sign the NDA and lead the team for the $700 fixed scope. Best regards,
$700 USD in 7 days
4.8
4.8

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