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I built a cross-platform application that talks to my custom ESP32 controller and drives an ultrasonic record cleaner. It works, but it is still very much a prototype. I now want to move it a step closer to a polished, production-ready tool. User-interface improvements • Navigation & layout – The current screen flow works well, but needs a few enhancements such as tallying total cycles and changing temp settings from % to degrees C or F • User feedback & interactions – The app already shows real-time status (temperature, cycle countdown, tank level) . Need notifications near cycle ends with subtle haptics or unobtrusive toast messages are welcome where supported. Functional enhancements • New features – We're planning to add more advanced control via RS-485 communication with the ultrasonic driver control board (the control board and driver board already have this capability) • Performance optimisation – Want to make wifi set up as fool proof as possible. Deliverables 1. Refactored UI with the improved navigation flow and real-time feedback widgets. 3. Code-level performance for using RS-485 to control the driver board 4. Updated build(s) for all currently supported platforms, plus a concise change log and any new installation instructions. Acceptance criteria • All new screens render correctly on the same device set I already support. • A full cleaning cycle with appropriate notifications • Source code compiles without warnings and is accompanied by inline comments for the new modules. I am not chasing bug fixes right now; stability is acceptable in the latest commit. The focus is squarely on the UI enhancements and the functional upgrades described above. The existing project is well-structured and under version control. I will provide repository access, the ESP32 command spec, and a short video that shows the current UX so you can see what needs smoothing out.
ID Projek: 40238040
122 cadangan
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Aktif 13 hari yang lalu
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122 pekerja bebas membida secara purata $37 CAD/jam untuk pekerjaan ini

Hi there, I understand you want to turn the ESP32 ultrasonic cleaner app from a solid prototype into a polished, production-ready tool. My plan is to redesign the UI for clearer navigation, show total cycle counts, and switch temperature displays from percent to degrees C/F. I’ll add precise real-time feedback widgets, and implement unobtrusive cycle-end notifications with optional haptics or toasts. On the hardware side, I’ll enable robust RS-485 control for the driver board with clean, well-documented code and ensure the new flows work across all your supported platforms. I’ll optimize wifi setup to be fool-proof and include concise build notes, a changelog, and updated installation steps. Deliverables will include a refactored UI, RS-485 control code, updated builds, and inline comments for new modules, all verified against your current device set. What is the most important immediate acceptance criterion you want verified first (UI polish, RS-485 control, or network setup)? Technical questions I’d ask you: 1) Which platforms must render the new UI identically, and are there any platform-specific constraints for RS-485 timing? 2) Do you want temperature units auto-detected or settable per user profile? 3) Any specific RS-485 baud rate or parity requirements for the new driver interface? 4) How should the app handle RS-485 fault conditions (bus errors, timeouts, device offline)? 5) Do you have a preferred notification style across iOS/Android (toasts vs native alerts)? 6)
$34 CAD dalam 27 hari
9.5
9.5

Hello! I can refine your cross-platform app into a more production-ready tool by upgrading the UI layer and extending the ESP32 communication stack with clean, maintainable modules. Proposed Architecture: Core Engine • Refactored UI layer with clearer navigation hierarchy and cycle tally tracking • Temperature control converted from percentage mapping to true °C/°F with calibration layer • Dedicated hardware communication module abstracting WiFi + RS-485 transport • Structured state management for real-time telemetry (temp, countdown, tank level) Flow • Improved dashboard with live widgets and cumulative cycle counter • End-of-cycle notifications with subtle haptics and non-intrusive toasts • RS-485 command pipeline integrated with driver board protocol • Foolproof WiFi onboarding flow with retry, validation, and status feedback Performance Strategy • Optimized polling or event-driven telemetry handling • Buffered RS-485 communication with timeout and error detection • Clean separation between UI, device services, and protocol layer • Inline documentation for all new modules Deliverables include updated cross-platform builds, refactored UI components, RS-485 control implementation, concise changelog, and installation notes. The focus will remain strictly on UI polish and functional expansion without destabilizing your current architecture. Let’s define your benchmark set and preferred hosting environment so we can move quickly. Best regards, Jasmin
$38 CAD dalam 40 hari
9.6
9.6

Hello, As the founder and lead developer of Live Experts, a team renowned for successfully delivering top-tier engineering and development services, I assure you that our expertise perfectly aligns with the requirements of this project. With extensive experience in Android, C# Programming, iOS Development, Software Architecture, and Software Development, we are well-suited to upgrade your ESP32 Ultrasonic Cleaner App to achieve optimal performance. A key strength of our team is our multi-disciplinary skill set which includes proficiency in Computer Science, Data Analysis, Game/Web Development, and more. These proficiencies directly address your need for UI/UX upgrades and functional enhancements. Whether it's transforming the current screen flow to tally total cycles and changing temp settings or incorporating advanced control via RS-485 communication, we have the tools to deliver a polished end-product that you envision. Moreover, I understand that you value stability and cohesion in your project. Rest assured, we work with utmost care to ensure code clarity sans any warnings. With inline comments for new modules, we provide adequate documentation for seamless future navigation. At Live Experts®, we make it a priority to transfer our proficiency and knowledge to clients so they can continue maintaining their projects effectively. End result? A production-ready app that delivers excellent user experience alongside necessary notific Thanks!
$68 CAD dalam 1179 hari
8.3
8.3

Hello, Your ultrasonic cleaner app already has a solid, well-structured foundation. The next step is clearly polishing the UI, improving real-time feedback, adding reliable RS-485 control, and making Wi-Fi onboarding simple and foolproof for end users, and that’s exactly where I can help. Here’s how I’ll approach it: -> Refactor navigation and real-time widgets for smoother flow, including cycle tally tracking and proper °C/°F temperature controls with intuitive adjustments. -> Add subtle, platform-aware notifications (toasts + haptics) to alert users as cycles near completion without disrupting the experience. -> Implement robust bidirectional RS-485 communication to control the driver board, with clean, well-commented code and solid error handling for production reliability. -> Optimize Wi-Fi setup using proven onboarding patterns, guided provisioning, clear error states, and stable auto-reconnect logic. Deliverables include: Refactored UI code, RS-485 module integration, updated builds for all supported platforms, a concise changelog, and clear installation notes, all compiling cleanly with inline documentation. Question: Does your ESP32 board already use a MAX485 (or similar) transceiver, or will RS-485 flow control be handled via firmware? I’m ready to review the repo and specs whenever you’re ready. Best regards, Niral
$25 CAD dalam 40 hari
8.3
8.3

Dear , We carefully studied the description of your project and we can confirm that we understand your needs and are also interested in your project. Our team has the necessary resources to start your project as soon as possible and complete it in a very short time. We are 25 years in this business and our technical specialists have strong experience in Mobile App Development, Android, C# Programming, User Interface / IA, Software Architecture, Software Development, iOS Development, Mobile Development, Application Performance Monitoring, User Experience Research and other technologies relevant to your project. Please, review our profile https://www.freelancer.com/u/tangramua where you can find detailed information about our company, our portfolio, and the client's recent reviews. Please contact us via Freelancer Chat to discuss your project in details. Best regards, Sales department Tangram Canada Inc.
$35 CAD dalam 5 hari
8.1
8.1

Hi, This is Elias from Miami. I’ve checked your project description and understand the goal is to take your existing cross-platform app + ESP32 ultrasonic record cleaner from “prototype that works” to a more polished, production-ready tool — primarily UI/UX upgrades (navigation polish, total cycle tally, temp settings in °C/°F, better in-cycle feedback + end-of-cycle notifications/haptics) plus functional upgrades (RS-485 control path to the ultrasonic driver board, and a foolproof Wi-Fi setup flow). With 10+ years building device-control apps (BLE/Wi-Fi peripherals, real-time telemetry UIs, and hardware comms), I’m interested because this is exactly the kind of “make it feel finished” refinement work I enjoy — smooth UX, reliable state handling, and clean comms modules. Additionally, a few questions: -Q1 What stack is the current app (Flutter / React Native / .NET MAUI / Electron), and which platforms are “currently supported” (iOS/Android/Windows/macOS)? -Q2 For Wi-Fi setup, is the ESP32 using SoftAP + captive portal, BLE provisioning, or SmartConfig today — and are you open to changing provisioning method if it improves reliability? -Q3 For RS-485, do you want the ESP32 acting as the RS-485 bridge (app → ESP32 over Wi-Fi → driver board), and do you already have the driver board’s RS-485 protocol/docs (baud rate, frame format, commands)? Looking forward to hearing from you. Regards.
$38 CAD dalam 40 hari
8.0
8.0

Hello, I’d be glad to help elevate your ESP32 ultrasonic cleaner app from a working prototype to a polished, production-ready tool. With your existing structure, real‑time feedback, and cross‑platform build already in place, I can focus precisely on the UI refinements and functional upgrades you outlined. I will streamline navigation flow, redesign cycle tallying, and convert temperature settings from percentages to clear °C/°F controls. Real‑time status indicators will be refined with subtle haptics and toast notifications near cycle completion. On the functional side, I’ll implement RS‑485 communication for advanced driver control and tighten the Wi‑Fi setup for maximum reliability. Finally, I’ll deliver updated builds for all supported platforms along with a clean changelog and installation notes. Everything will be kept lightweight, well‑commented, and consistent with your acceptance criteria. Regards, Ahtesham
$68 CAD dalam 15 hari
7.8
7.8

Hi there, I’ve reviewed your Flutter app requirements and would love to help. With 5+ years of experience in cross-platform development, I specialise in clean UI, smooth performance, and robust API integration. I’ll begin with clear planning, share regular progress updates, and ensure the app is fully tested before launch. Let’s connect to discuss your vision — I’m ready to get started! Best, Bhargav Flutter Developer | Android & iOS Expert
$25 CAD dalam 40 hari
7.0
7.0

Hi I can refine your cross-platform ultrasonic cleaner application by improving the UI flow, enhancing real-time feedback, and implementing robust RS-485 control for your ESP32-driven system. The main challenge is upgrading prototype-level interactions into a smooth, production-ready interface, and I’ll solve this through refined navigation, accurate temperature controls, responsive notifications, and optimized WiFi setup logic. I’ll also integrate RS-485 commands cleanly at the code level to give your app advanced driver-board control without affecting existing stability. Real-time status widgets, haptics, and subtle toast alerts will make the user experience far more intuitive. Updated builds for all supported platforms will be delivered alongside a clear change log and installation notes. All new modules will include inline documentation and compile without warnings. Thanks, Hercules
$60 CAD dalam 40 hari
6.7
6.7

Hi there! I’m excited about your project to upgrade the ESP32 Ultrasonic Cleaner App. Your vision for transforming this prototype into a polished tool resonates with me, and I’m confident in my ability to help you achieve it. As a top California freelancer, I’ve tackled many similar projects, earning consistent 5-star reviews by focusing on both user-friendly interfaces and robust functionality. I completely understand your need for a refined user interface that enhances navigation and provides real-time feedback. My extensive experience in mobile development, alongside a deep understanding of user experience design, ensures that I can create a seamless flow for your app while implementing the new features like RS-485 communication. With a knack for performance optimization, I will ensure that the wifi setup is straightforward, addressing your need for fool-proof operation. Let’s connect to discuss this further and make your app a standout product! What is your preferred timeline for the rollout of the upgraded app features?
$40 CAD dalam 30 hari
6.2
6.2

Your ESP32 controller will fail to scale beyond a single-user prototype if the RS-485 implementation doesn't handle bus collisions and timeout recovery. I've debugged similar industrial control systems where missing error handling caused the entire cleaning cycle to freeze mid-operation. Before architecting the RS-485 layer, I need clarity on two things: What's the maximum cable length between your ESP32 and the driver board, and are you planning multi-drop communication with multiple devices on the same bus? This determines whether we need termination resistors and collision detection logic. Here's the architectural approach: - C# + XAMARIN/MAUI: Refactor the UI state machine to decouple RS-485 commands from the rendering thread, preventing UI freezes during serial communication timeouts. - ESP32 RS-485 PROTOCOL: Implement CRC checksums and automatic retry logic with exponential backoff to handle noisy industrial environments where EMI corrupts packets. - WIFI PROVISIONING: Replace manual SSID entry with ESP32 SmartConfig or BLE-based onboarding so users can't fat-finger credentials and blame your hardware. - REAL-TIME NOTIFICATIONS: Use platform-native push channels (APNs/FCM) with fallback to local notifications when the app is backgrounded, ensuring cycle-end alerts fire even if the user switches apps. - TEMPERATURE CONVERSION: Add persistent user preference storage for C/F units and validate sensor readings against physical limits (ultrasonic transducers fail above 80°C) to prevent displaying garbage data. I've built 4 IoT control systems where the mobile app had to maintain sub-500ms command latency over unreliable serial links. I don't take on embedded projects where the hardware specs are incomplete. Let's schedule a 20-minute call to review your ESP32 command protocol and discuss edge cases like what happens when the tank sensor reports conflicting data mid-cycle.
$34 CAD dalam 30 hari
6.5
6.5

Hi There!!! ★★★★ (Upgrade ESP32 Ultrasonic Cleaner App) ★★★★ I understand you need to upgrade your cross-platform ESP32 ultrasonic cleaner app with improved UI, enhanced navigation, real-time feedback, notifications, and new RS-485 control features, while keeping it compatible with all supported devices. Services 24*7 available for discussion(reply in a few hours) Ui & UX design with unlimited revisions Deployment Support Source code will be provided at the end of the project 90-days support for bug fixing With 9+ years experience in mobile development, C#, and cross-platform apps, I’ve polished IoT and hardware-control interfaces before. I’ll refactor your UI for smoother flow, implement subtle haptics/toast notifications, and integrate RS-485 functionality while ensuring builds compile cleanly and inline comments are clear. Excited to refine your app into a polished, production-ready tool and make your user experience seamless. Best Regards, Farhin B.
$25 CAD dalam 40 hari
6.5
6.5

Hi there To move this from prototype to production-grade, the most critical part is tightening the communication layer while modernizing the UI without disturbing your existing architecture. I’d begin by refactoring the navigation flow and telemetry widgets—clean layout, total cycle tally, proper °C/°F conversion, and subtle end-cycle notifications with optional haptics or toast messages. Real-time updates must stay responsive and non-blocking. For RS-485, I’d implement a structured command layer (likely via UART on ESP32 with a buffered, checksum-validated protocol) to safely control the driver board without interfering with WiFi operations. WiFi onboarding can be improved with guided provisioning and clear connection feedback. After reviewing your repo and ESP32 command spec, I’ll provide a precise milestone plan with timeline and budget.
$60 CAD dalam 40 hari
6.2
6.2

Hello, Hope you're doing great! I’m a Mobile App Developer who builds smooth, user-friendly, and feature-rich applications for Android and iOS. Whether it's a simple app or a full-scale product, I ensure high quality and excellent performance. My Skills 1. Android apps (Java/Kotlin) 2. IOS apps (Swift) 3. Flutter & React Native apps 4. Pixel-perfect UI screens 5. API integration & database setup 6. Firebase / push notifications / analytics 7. Payment integration 8. App Store & Play Store publishing Why Clients Like Working With Me 1. Modern, clean and intuitive app designs 2. Excellent performance and fast loading 3. Strong knowledge of mobile architectures 4. Transparent communication 5. End-to-end support: design → build → launch Let’s Start Your App Share your idea or reference app — I’ll provide: 1. Best development approach 2. Timeline 3. Budget estimate Excited to build your mobile app!
$25 CAD dalam 40 hari
5.8
5.8

I can take your existing cross platform app from prototype to production ready polish without destabilising the current ESP32 flow. I will refactor navigation and layout, add total cycle tally and temperature control in real degrees C or F, and improve real time feedback with unobtrusive near end notifications plus light haptics where supported. On the functional side I will add an RS 485 control module for the ultrasonic driver board using your command spec, keep it isolated behind a clean interface, and benchmark timing so it does not impact UI responsiveness. I will also harden WiFi setup with a guided flow, clearer states, and automatic retry and recovery paths. Deliverables: updated UI screens and widgets, RS 485 control implementation, updated builds for all current platforms, concise changelog, and brief install notes. Acceptance: screens render on your current device set, a full cleaning cycle triggers the right notifications, and the repo compiles cleanly with comments on new modules. Best Alex
$35 CAD dalam 40 hari
5.5
5.5

✋ Hi There!!! ✋ The Goal of the project:- Upgrade the ESP32 ultrasonic cleaner app with improved UI, enhanced user feedback, and advanced functional control for a polished, production-ready experience. I have carefully read and understood your project requirements for refining the navigation, adding real-time feedback, and integrating RS-485 control for the ultrasonic driver. I am confident I am the best fit for this project because I have extensive experience in cross-platform mobile app development and embedded system integration. Three points that directly match your requirements: 1. Refactoring the UI for better navigation, cycle tallying, and temperature display in degrees C or F. 2. Implementing subtle notifications, haptic feedback, and real-time status widgets. 3. Adding RS-485 communication to control the ultrasonic driver and optimizing Wi-Fi setup. I will provide UI design, database management, testing, and full source code delivery at project completion, plus essential performance improvements and installation documentation. I have 9+ years experience as a full stack developer and have delivered multiple embedded device control apps with cross-platform support. Looking forward to chat with you for make a deal Best Regards Elisha Mariam!
$25 CAD dalam 40 hari
5.5
5.5

Hi there, I can help take your cross-platform ultrasonic cleaner app from prototype to polished production-ready. I’ll refine the UI with improved navigation, real-time feedback widgets, cycle tallies, and intuitive temperature controls, while adding subtle notifications and haptic feedback where supported. On the functional side, I’ll implement RS-485 control for the driver board and optimize Wi-Fi setup for a foolproof experience. Deliverables include updated builds for all supported platforms, clean, commented code, and a concise change log with installation instructions. Looking forward for your positive response in the chatbox. Best Regards, Arbaz T
$40 CAD dalam 40 hari
5.7
5.7

It’s frustrating when a working prototype just misses the mark on polish, especially when clunky cycle tallies and confusing temp settings slow you down. Without sharp notifications or a foolproof wifi setup, the experience stays stuck in “almost there” mode, costing you efficiency and user confidence. You can look forward to a refined app that guides users smoothly through cleaning cycles, shows clear temp settings, and delivers timely feedback right when it matters. First, I’ll enhance the UI for easier navigation and visible cycle tallies, with temps shown in real-world units. Then, I’ll wire up real-time feedback and notifications so every cleaning cycle feels complete and reliable. Finally, I’ll build in the RS-485 control and optimize wifi setup, making the whole process seamless on all your platforms. Which aspect is most urgent for you: UI flow, notifications, or advanced control features?
$37 CAD dalam 40 hari
5.4
5.4

Hi, I have reviewed the details of your project. we have handled similar projects successfully, and I am confident we can deliver high quality results for you. i will first understand exactly what you need, then plan everything step by step to make sure the work runs smoothly. we prefer clear communication and regular updates so that the project progresses smoothly and meets your expectations. Let's have a detailed discussion, as it will help me give you a complete plan, including a timeline and estimated budget. I will share my portfolio in the chat to show relevant examples of our past work. looking forward to your response. Mughiraa
$38 CAD dalam 40 hari
5.2
5.2

Hello, I have reviewed your project to upgrade the ESP32 Ultrasonic Cleaner App and I understand the need to enhance the user interface and add new features for improved functionality. I plan to approach this project by first focusing on refining the navigation flow and real-time feedback widgets to enhance user experience. Additionally, I will work on integrating RS-485 communication for advanced control and optimizing performance for foolproof wifi setup. My expertise in C# Programming, along with past experience in developing similar applications, aligns well with the requirements of this project. I am committed to maintaining clear communication and collaboration throughout the project to ensure its success. Best regards, Justin
$40 CAD dalam 40 hari
4.9
4.9

Calgary, Canada
Ahli sejak Feb 17, 2026
₹37500-75000 INR
$3000-5000 USD
₹100-400 INR / jam
€3000-5000 EUR
₹12500-37500 INR
$30-250 USD
$30-250 USD
€250-750 EUR
₹12500-37500 INR
₹12500-37500 INR
$5000-10000 USD
₹37500-75000 INR
$10-30 USD
$250-750 USD
$10-30 USD
$15-25 USD / jam
$250-750 USD
₹12500-37500 INR
₹12500-37500 INR
€30-250 EUR