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I’m looking for a clean, lightweight Android application whose sole purpose right now is to control my ESP32-based hardware. The interaction must be through on-screen buttons only—no sliders or voice commands at this stage. Tapping a button on the phone should send an immediate command to the ESP32 so the device reacts with minimal latency. I already have the firmware running on the board; what I need from you is the Android side: screen layout, reliable connection logic, and simple feedback to confirm each command was sent. I’m open to whichever transport layer you feel is most robust with the ESP32 (classic Bluetooth, BLE, Wi-Fi sockets, HTTP requests, etc.); just outline your choice and why. Data monitoring and alert notifications aren’t required now but I’d like the architecture to leave room for them later. Deliverables • Signed APK for quick testing • Full Android Studio project with readable, well-commented code • A short read-me explaining build steps, pairing/connection flow, and where to modify button labels or command strings Acceptance Criteria • All buttons trigger the correct command every time across repeated connects/disconnects • UI loads in under two seconds on an average Android handset (API 24+) • Code compiles without additional libraries beyond those you declare up front If you have prior work controlling microcontrollers from Android, please share a brief example so I can see your style. I’m ready to start as soon as we agree on the connection approach.
Project ID: 40702745
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67 freelancers are bidding on average ₹9,616 INR for this job

Hello Client, Greeting of the day!!!! I read your job description I have sound of five years plus experience in App development. I have been DEVELOPED 35+ Apps, three taxi apps, Two socials apps and restaurant apps based on GPS location and notification functionality and based on different domain like sports, Health, GYM, personal business and social etc I have testing team for testing apps. I think I am strongest person for doing this job and provide the quality product with testing. I am always available for your support. Thanks Sr. Mobile Developer
₹50,000 INR in 20 days
6.7
6.7

I deliver 100% work — 99.9% is not for me. Workflow Diagram ESP32 Protocol Review ⟶⟶ Connection Architecture ⟶⟶ Android UI ⟶⟶ Button Command Mapping ⟶⟶ Connection/Reconnect Logic ⟶⟶ Command Feedback ⟶⟶ Device Testing ⟶⟶ Signed APK & Handover Key Highlights • Build a lightweight native Android application focused specifically on fast, reliable ESP32 control through on-screen buttons. • I would select BLE when short-range wireless control and simple pairing are priorities, or Wi-Fi sockets/HTTP when the ESP32 already exposes a network interface. I’ll align the Android implementation with your existing firmware rather than requiring unnecessary firmware changes. • Each button will map cleanly to configurable command strings with immediate visual feedback for sent/success/failure states. • Implement robust connect, disconnect, reconnect, timeout, and communication-error handling so repeated connections remain reliable. • Keep communication logic separate from the UI, allowing future monitoring, sensor data, alerts, and additional controls to be added easily. • Final testing will validate every configured command across repeated connection/disconnection cycles. Best Regards, Asad Android Development | ESP32 | Bluetooth/BLE | Wi-Fi Communication | IoT Automation
₹4,000 INR in 7 days
4.8
4.8

Hi, You need a light Android app with on-screen buttons that send commands to your ESP32 with low latency, plus clear send feedback — firmware is ready; Android UI + connection only. I’d use BLE as default: solid on modern phones, low power, and a good fit for button commands. If your firmware already speaks classic Bluetooth or Wi-Fi/HTTP, I’ll match that instead. Architecture will leave room for later monitoring/alerts without a rewrite. I’ve built Android ↔ ESP32 / BLE control apps (Plantio-style hardware links and IoT control). Deliverables: signed APK, Android Studio project, and a short README (build, pairing, where to change labels/commands). ₹5000 — quick start once you confirm the current transport (BLE UUID / BT SPP / Wi-Fi IP).
₹5,000 INR in 2 days
4.9
4.9

Hi there, I’m an Android developer with 5 years of experience in Kotlin/Java and have experience building Android apps that communicate with IoT hardware. I can build the complete lightweight controller with a clean button-based UI, reliable connection/reconnection handling, immediate command delivery, and clear success/failure feedback. For the transport, I’d recommend BLE if your ESP32 firmware supports it, as it provides a reliable, low-latency local connection without requiring the same Wi-Fi network. If your existing firmware is already using Wi-Fi/HTTP or sockets, I can adapt to that instead rather than changing the firmware unnecessarily. I’ll provide the signed APK, complete Android Studio project, readable code, and README covering setup, pairing/connection flow, button labels, and command strings. I’ll also structure the communication layer so monitoring and notifications can be added later. I can start as soon as you share the ESP32 communication protocol/command format and confirm which transport the current firmware supports.
₹6,500 INR in 5 days
4.5
4.5

Hello, I can build your lightweight Android application to control your ESP32 hardware. My plan is to develop the mobile app using native Kotlin or Flutter. For the transport layer I recommend using Wi Fi TCP sockets or HTTP REST requests if the ESP32 is on your local network. Sockets provide ultra low latency and establish a persistent bidirectional connection which makes them ideal for instant button commands and easy to expand later for live data monitoring. I can design a clean uncluttered user interface featuring large touch buttons and clear visual feedback indicators confirming when each command is dispatched. I can also structure the codebase cleanly to support future telemetry and notification modules. In a past project I developed an Android remote control app communicating with an ESP32 microcontroller over local Wi Fi TCP sockets. 1) Does the ESP32 connect to your home Wi Fi router as a client or does it broadcast its own Access Point? 2) What specific command format or string does the ESP32 firmware expect to receive when a button is pressed? 3) Do you prefer building this Android app using native Kotlin or cross platform Flutter? Thanks, Bharat
₹15,000 INR in 7 days
4.1
4.1

Hello there, I understand you need a lightweight Android controller that reliably sends button commands to your ESP32 with minimal latency. I can build the Android side with a clean UI, stable BLE/Wi-Fi connection handling, reconnect logic, and clear command feedback. I’ll provide the signed APK, complete Android Studio project, and simple documentation so commands and labels are easy to update later. Best regards, Krish
₹8,000 INR in 2 days
3.5
3.5

Hello sir, I am a fullstack developer and experienced in cross platform android and ios app development with ble and other iot connectivity, I have ESP32 dev board already and have created an app recently for connecting a ble device and realtime android app for esp32 to share some data with mobile app, I am sure I can provide you the solution you are looking for so I am interested in this project. I think I can work more natively on this since i think I am the nearest... Please open the chat to discuss more about the project. Regards Balkishan Dhaker
₹6,000 INR in 3 days
3.6
3.6

Dear Client, I can develop the Android application you need for controlling your ESP32 device using quick and reliable on-screen buttons. I have 6+ years of experience in mobile app development and can build the complete Android side including UI, connection handling, command sending, reconnect logic, and simple success/error feedback. I can work with BLE, Bluetooth, Wi-Fi sockets, or HTTP depending on your existing ESP32 firmware. I will choose the option that gives better reliability and low command delay for your setup. I can share my relevant mobile app work links in the chat box. Looking forward to your response on chat box. Thanks.
₹1,500 INR in 10 days
3.5
3.5

Hi there, Building a clean, low-latency Android app to interface with your ESP32 hardware is my core specialty. Having engineered multiple custom Android control apps for ESP32 and ESP32-S3 boards, I will deliver a lightweight, responsive interface optimized for instant action. Recommended Transport: BLE (Bluetooth Low Energy) For battery-efficient, ultra-low-latency local button control, I recommend BLE (via GATT). It establishes an instant connection upon app launch, eliminates Wi-Fi network dependency, and easily scales to support two-way telemetry monitoring in your next phase. How I Will Execute the App: Native Android UI: Build a lightweight native Kotlin interface (Min SDK 24 / API 24+) ensuring launch times under 1 second. Robust Connection Logic: Implement auto-reconnect loops, graceful state handling (disconnect/reconnect), and visual button-press feedback. Modular Architecture: Structure the codebase using MVVM so adding sensors, telemetry readouts, or alert notifications later requires zero structural rewrite. Deliverables: Production-ready signed APK for immediate testing. Complete, well-commented Android Studio project (Kotlin). Detailed ReadMe covering build steps, BLE pairing, and simple configuration options for modifying command strings and UI buttons. Ready to review your ESP32 BLE GATT UUIDs and command protocol to get started immediately!
₹10,000 INR in 7 days
3.2
3.2

Hi, Thanks for sharing your project. It aligns well with work I’ve successfully completed for other clients, and I’m confident I can deliver a high-quality solution tailored to your requirements. Before providing an accurate timeline, scope, and budget, I’d like to clarify a few key details to ensure we're aligned from the start. Freelancer’s proposal character limit makes it difficult to cover everything thoroughly here. If you're available, let's connect via chat. I can walk you through similar projects I've completed, discuss the best approach for your specific requirements, and answer any questions you may have. Once I understand your expectations, I'll provide a clear execution plan with realistic timelines and pricing. I’m ready to get started as soon as we finalize the details and look forward to working with you. Best regards, Mayank Sahu
₹7,000 INR in 7 days
2.9
2.9

As an experienced Software Engineer with a focus on mobile app development, I believe I'm the best fit to develop your Android Control App for ESP32. I have a strong background in building reliable systems, developing APIs, and working with microcontrollers, which has equipped me with the skills necessary to design and implement a clean, lightweight application matching your needs. My prior work includes multiple projects controlling microcontrollers from Android, one example can be easily shared to demonstrate my style. Drawing on my comprehensive expertise, I'll ensure your app meets all acceptance criteria stipulated. To guarantee reliable communication between the app and the ESP32 board, I propose using Bluetooth Low Energy (BLE). In this way, not only will we achieve a robust connection with minimal latency, but we will also leave room for potential upgrades such as data monitoring and push notifications. Importantly, my approach to software development centers around creating products that are not only functional but also scalable and ready for future growth. You can be confident that in addition to delivering a fully-functional app well-commented code and a clear 'read-me', I'll also provide you an Android Studio project which is easily maintainable even without me. Let's discuss your project in detail to get started promptly!
₹7,000 INR in 2 days
2.8
2.8

You need an Android app to control an ESP32 microcontroller via buttons with minimal latency and reliable command execution. My mobile development background is React Native/Flutter (cross-platform iOS/Android), plus Java backend work; I haven't done native Android with Bluetooth/microcontroller control before, but the core skills—real-time UI responsiveness, reliable connection logic, command handling—transfer directly. Here's my approach: I'd recommend Bluetooth Classic or BLE (over Wi-Fi) for lower latency and simpler pairing on both sides. Build a straightforward Android UI with large tap targets, connection status indicator, and immediate visual feedback when commands send. Implement connection state management so reconnects work cleanly. Each button tap → command string → sent over Bluetooth → confirm receipt on UI. Architecture: I'll design it modular so monitoring/alerts can slot in later without refactoring the core command flow. Tech: Native Android (Java, Android Studio), standard Bluetooth stack, no heavy dependencies. Code will be clean and well-commented so you can modify button labels, commands, or connection logic yourself. What I need from you: the ESP32 firmware's Bluetooth command API (what strings it expects, any response protocol). That'll let me tailor the app correctly on the first pass. Deliverable: signed APK, full Android Studio project, readme with build/pairing/customization steps.
₹6,000 INR in 2 days
3.0
3.0

I can build the Android application to provide fast, reliable button-based control of your existing ESP32 firmware. I’d recommend BLE if your hardware supports it, as it provides low-latency communication, low power usage, and reliable reconnect handling without requiring the phone and ESP32 to share a network. I’ll implement a clean Android UI with clearly defined controls, connection status, and immediate feedback when commands are transmitted. The connection layer will handle repeated connects, disconnects, reconnection attempts, and communication failures so commands remain dependable during normal use. I’ll structure the project so command strings, button labels, and future monitoring/notification features can be added without restructuring the application. The deliverables will include a signed APK for testing, a complete Android Studio project with readable and documented code, and a concise README covering setup, pairing, connection flow, and customization. I have experience developing Android applications and integrating software with hardware/API-based systems, and I can build this as a lightweight, maintainable solution targeting API 24+.
₹12,000 INR in 7 days
2.5
2.5

Hello, BhartiyaCoders can develop a clean, lightweight Android application to reliably control your ESP32 hardware with fast button-based commands and minimal latency. We can build the app for Android API 24+ with a simple, responsive UI where every button maps directly to a specific ESP32 command. For the connection layer, we would evaluate your existing firmware and recommend the most reliable option—BLE is often a strong choice for direct low-latency control, while Wi-Fi can be preferable if your firmware already exposes HTTP/socket communication. The app will include robust connect/reconnect and disconnect handling, command confirmation feedback, and an architecture that can later accommodate monitoring and notifications without unnecessary complexity. Deliverables will include: Signed APK for testing Complete Android Studio project with clean, readable, commented code README covering build steps, connection/pairing flow, button labels, and command-string modifications We’ll test repeated connections/disconnections and command delivery to ensure reliable operation against your acceptance criteria. We can also share relevant examples of our Android-to-microcontroller work and discuss the existing ESP32 communication interface before development begins. Best regards, BhartiyaCoders
₹7,000 INR in 7 days
2.4
2.4

Hi, I can build a clean, lightweight Android app to control your ESP32 with fast button-based commands and reliable reconnect handling. I recommend BLE if your current ESP32 firmware supports it, because it provides low-latency local control without requiring Wi-Fi infrastructure and works well for repeated connect/disconnect cycles. If your firmware already exposes Wi-Fi, HTTP, or classic Bluetooth, I can integrate with that instead. I can deliver: • Simple responsive button-based UI • ESP32 connection/pairing flow • Immediate command transmission • Command sent/success feedback • Automatic reconnect handling • Connection status indication • Configurable button labels and command strings • Architecture ready for future monitoring/alerts • Android API 24+ compatibility • Signed APK for testing • Full Android Studio project • Clean, commented Java/Kotlin code • README with build and configuration steps I’ll keep dependencies minimal and the app optimized for fast startup and stable communication. Please share the current ESP32 communication protocol, command strings, and desired button list, and I can start immediately. Best regards Ankit
₹12,500 INR in 2 days
2.3
2.3

I can build the Android app to control your ESP32 hardware with a simple button-based interface and reliable low-latency command delivery. I’d recommend BLE if the hardware is intended for nearby control, as it provides a reliable connection with low power usage and is well suited to repeated connects/disconnects; if your firmware already exposes HTTP or Wi-Fi sockets, I can use that instead after reviewing the protocol. I’ll implement connection status handling, automatic reconnect logic, command delivery confirmation and clear feedback when each button is successfully sent. The UI will remain lightweight and load quickly on Android API 24+, with no unnecessary dependencies. I’ll keep command strings and button labels in one clearly documented configuration area so they can be changed easily, and structure the code so future monitoring or notifications can be added without rebuilding the app architecture. You’ll receive a signed APK, complete Android Studio source code with readable comments, and a README covering build steps, pairing/connection flow and customization. I can also test repeated connect/disconnect cycles and command delivery to ensure the buttons behave consistently. Thanks!
₹7,000 INR in 7 days
1.7
1.7

Hi there, I can build a clean, ultra-responsive Android app tailored specifically for controlling your ESP32 hardware with near-zero latency. * **Transport Layer Recommendation:** I recommend **BLE (Bluetooth Low Energy)** or **Classic Bluetooth (SPP)** if point-to-point local pairing is preferred, as it requires zero Wi-Fi network setup and provides instantaneous sub-millisecond command dispatch. If your ESP32 already operates on a local LAN, a lightweight **UDP/TCP socket** connection is an equally great zero-overhead alternative. * **Architecture & UI:** The interface will be lightweight (sub-second launch time on API 24+), featuring responsive touch feedback states (visual confirmation/toast/haptic) for every button press. The codebase will follow a modular MVVM pattern, cleanly separating the UI layer from the transport engine so incoming telemetry, status monitoring, or alerts can be plugged in later without structural rewrites. * **Deliverables:** A ready-to-test signed APK, the complete clean Android Studio project without bloated third-party dependencies, and a concise README outlining the pairing flow and exact config constants to modify button labels or command payloads. Ready to review your ESP32 firmware protocol and get this delivered within your timeline. Best regards, Nikhil Chandra Roy
₹7,000 INR in 7 days
1.6
1.6

Hi, I can build a lightweight **Android app for ESP32 control** with a simple button-based UI and reliable connection handling. I recommend **BLE** for direct, low-latency communication without requiring internet access. I’ll implement reconnect handling, command confirmation, API 24+ compatibility, and a clean architecture that can later support monitoring and notifications. You’ll receive the **signed APK, complete Android Studio source code, and setup/readme documentation**. I’m ready to start immediately.
₹1,500 INR in 1 day
0.9
0.9

Having extensively worked over 3 years in software development, I bring to your project highly customized and innovative digital solutions which cater specifically to your unique needs. With expertise in C Programming and Mobile App Development, I assure you the Android application needed for controlling your ESP32 hardware, with robust UX/UI design, reliable connection logic and time-efficient command implementation. My technical proficiency is underpinned by the ability to establish clear and efficient communication channels which will ensure we are always on the same page.
₹5,000 INR in 4 days
0.9
0.9

⭐Happy Day⭐ As a senior full-stack developer with immense experience building custom web applications, I am well-versed in both front-end and back-end development. My expertise in Java will be of utmost value to create a clean, lightweight Android app for your ESP32-based hardware. With your minimal latency requirement, my previous work includes developing applications involving high data throughput such as booking flows and AI integrations, ensuring that each of the commands is sent immediately through a robust connection. I have worked with technologies including BLE and Wi-Fi sockets and have thorough knowledge of their pros and cons. Given the complexity of your project, using Wi-Fi sockets for this would be the most efficient method- which I can guarantee a reliable protocol for seamless communication. Moreover, I prioritize maintainability and usability; thus, your Android Studio project will be impeccable with readable, well-commented code alongside comprehensive build instructions. My experience with API integrations will come handy while liaising between your ESP32 device and the Android app ensuring efficiency in sending correct command every time across repeated connects/disconnects. Let's embark on this journey together and I assure you an app that exceeds your expectations! Thanks!
₹7,770 INR in 4 days
0.0
0.0

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