Esp32 based communication

@amelectronics

I am a skilled and reliable Embedded Systems Engineer with over 6 years of hands-on experience in Arduino, ESP32/ESP8266, and microcontroller-based development. I specialize in designing efficient, stable, and scalable embedded solutions, turning ideas into fully functional hardware-software systems. I have a strong background in electronics, sensors, communication protocols (UART, I2C, SPI, MQTT, WiFi, BLE), and real-time embedded systems. My development approach focuses on clean, well-structured, and well-documented firmware, ensuring long-term reliability and easy maintenance. I also provide thorough testing, debugging, and performance optimization, including power efficiency improvements where required. I am a detail-oriented engineer with strong problem-solving skills and extensive experience in hardware debugging and firmware optimization. Beyond technical expertise, I value clear communication, meeting deadlines, and maintaining high client satisfaction. I work closely with clients to fully understand project requirements and deliver high-quality results. Pricing is flexible and can be discussed based on project scope and complexity. I am open to both short-term and long-term projects. Let’s work together to build a professional, reliable, and efficient embedded system for your needs.

@Amidst

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!

@debosx

Hello! I'm a highly skilled PCB Designer with over 10 years of expertise in delivering reliable and efficient PCB designs. I specialize in creating precision designs tailored to client's needs, utilizing top-tier design tools such as Altium Designer, Autodesk Eagle, KiCad, EasyEDA, Siemens PADS, DipTrace, Allegro/OrCAD, Fritzing and Proteus. My goal is always to ensure the highest quality and performance in every project. Core Expertise : • Schematic Capture & Layout Design • Component Selection & Library Management • Reverse Engineering (PCB Replication, PCB Cloning) • Gerber, BOM, and CPL File Generation & Manufacturing Support • Design for Manufacturability (DFM) and Design for Assembly (DFA) • PCB Design & Development (Single, Double, Multi-Layer, Flexible PCBs) Industries Served : • Medical Devices • Telecommunications • Consumer Electronics • Industrial Equipment • Automotive Electronics • Safety and Security Devices Why Choose Me? • Attention to Detail and Commitment to Quality • Strong Communication Skills & Client-Centric Focus • Timely Delivery & Flexible Approach to Meet Project Requirements I would love to help you with your next PCB design project. Feel free to reach out, and let’s discuss how I can bring your ideas to life! Best Regards, Utpal

@hayteekeys

HI, KINDLY READ THROUGH MY PROPOSAL I will deliver a complete ESP32 wireless vibration system: 1× transmitter (push-button sender) + 5× compact receiver units. Button press instantly triggers simultaneous vibration on all receivers; exact press-and-hold duration is mirrored in real time with <50 ms latency using ESP-NOW. Receivers include rechargeable LiPo, low-power sleep, and stable vibration-motor driver. MY APPROACH ✅ Phase 1: Schematic/BOM (ESP32 + button + vibration driver + battery management), ESP-NOW pairing & broadcast protocol. ✅ Phase 2: Firmware (Arduino/ESP-IDF) with precise start/stop timing, deep-sleep on receivers, watchdog & fail-safe. ✅ Phase 3: Assemble, bench-test full system and deliver 6 ready-to-use units. RELEVANT PROJECTS • ESP-NOW wireless multi-receiver vibration system for industrial safety signaling (1 sender + 8 receivers, exact duration mapping, <40 ms latency, battery-powered — delivered and field-tested) DELIVERABLES • Full schematics, PCB layout (KiCad), BOM with links • Complete, well-commented firmware source for sender & receivers • 1 sender + 5 tested receiver prototypes (assembled & ready) • Test report + integration guide QUESTIONS 1. Preferred vibration motor (coin 10 mm or 12 mm) and battery size? 2. Any maximum range requirement? 3. Target start date? Ready to start immediately.

@abdurRafiqM

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

@TheElitePro

Hi, 1. I understand you need an ESP32-based low-latency wireless system with 1 sender and 5 receivers where a button press duration is mirrored precisely as vibration time across all receivers. 2. I have experience building ESP32 wireless systems (ESP-NOW), low-power designs, and real-time control, including synchronized multi-node communication and battery-powered devices. 3. Relevant experience: a) ESP32 low latency PA broadcast system architecture design b) Battery-powered STM32 & BLE sensor designs with sleep modes and power optimization c) Motor/actuator control for a water system 4. My approach: a) Use ESP-NOW broadcast for fast, connectionless communication (<10ms latency) b) Sender: detect button press duration (start/stop timestamps) and transmit state changes c) Receivers: trigger vibration immediately on “press start” and stop on “release” → ensures exact duration match d) Implement synchronization handling to minimize drift across all 5 units e) Design compact motor driver (MOSFET + protection) f) Add deep sleep / light sleep for power efficiency g) Optimize for reliability (retries, signal strength handling) 5. Deliverables: a) Sender + receiver firmware (ESP-IDF/Arduino as preferred) b) Documentation + test procedure 6. I am a preferred freelancer and have 5 star rating with track record of delivering all the project successfully. All this has resulted into repeat customers. Regards, Vishal

@jb095

Hi, this project fits very well with my ESP32 and embedded wireless experience. I can help develop the sender and multi-receiver system using ESP-NOW for low-latency synchronized triggering. The real-time press-duration mapping you described is very feasible, including having all five receivers mirror the button hold time accurately. I also have experience with low-power embedded design, battery-powered devices, vibration motor drivers, and sleep-mode power management, which are important for making the receivers compact and efficient. This is a nice fit for ESP32, and I’d be glad to help with both firmware and hardware architecture for a robust portable system. Please share if you already have a preferred form factor or vibration motor type in mind. Thank you.

@ThynkLoop

Hi, I can help you develop a reliable ESP32-based wireless communication system with one transmitter and multiple synchronized receivers using ESP-NOW. I have experience in ESP32 communication, real-time embedded systems, and low-power device design. I will ensure accurate duration mapping, minimal latency, and stable synchronization across all receiver units. Scope: *Sender firmware *ESP-NOW wireless communication setup *Receiver firmware *Low-latency and reliable signal transmission *Power optimization *Vibration motor driver circuit design Deliverables: *Complete firmware for sender and receivers *Circuit design for vibration driver *Communication setup *Tested working prototype logic *Documentation Approach: *Implement precise timing measurement on sender *Broadcast duration data via ESP-NOW *Synchronize receivers with minimal delay *Use efficient power management for battery operation *Test synchronization accuracy across all units

@efr2000020

Hi! With extensive professional experience in C/C++ firmware development and the ESP32 ecosystem, I am well-equipped to build the software for your wireless synchronization system. Here is my approach: - ​ESP-NOW Integration: I will implement ESP-NOW for the 1-to-many communication. Being connectionless, it eliminates standard Wi-Fi overhead, guaranteeing the ultra-low latency needed for simultaneous triggering across all 5 receivers. ​- Real-Time Duration Mapping: To ensure the vibration duration exactly mirrors the button press without delay, I will program a state-change transmission. The sender will instantly broadcast a "start" packet on press and a "stop" packet on release. - ​Firmware Optimization: The sender code will utilize interrupt-based button handling with strict software debounce algorithms to prevent false triggers and guarantee reliable responsiveness. ​- Requirement Gathering: I am highly interested in this project and would love to get more details about your specific specs and software requirements. What is the exact maximum range expected in your deployment environment? Are there strict millisecond latency limits I should benchmark against? Do we need a hardcoded MAC address pairing scheme, or a dynamic pairing protocol? ​Looking forward to discussing the exact specifications with you soon!

@Mwaleed30

Being an Electronic Engineer, Hardware Designer and a skilled PCB Designer with 3 +years of experience I make proper R&D projects Full schematics and real life single layer ,2 layers ,4 layers ,6 layer and multi-layers PCBs projects (i.e: 1:PCB of compact ear buds 2:Pcbs for compact usb with advanced security features 3:Pcbs which involves USBs 4:Also i made many large projects which handles high voltage AC and DC 5: 6 -layers PCB of Arm Cortex Processor involving Programming 6: Programmable Frequency Generator PCB 7: Compact Smart SOS PCB 8: High Volatge Ac to DC Converter with MCU STM32 programmability’s for 10KW system 9: 10KW AC Inverter with output voltage 24V 10: Qi 1.3 Wirless Charger Transmitter and Reciever 11: PCB for agricultural watering system that controls 50 fig trees with expansion capability to 100 trees) 12: Custom IO Board Design for Raspberry Pi CM5 with Integrated RP2040 And many more I have advanced level grip on softawares like Easyeda-Pro ,Kicad, Altium I will show you my PCB work separately I will handle your project and made it perfect in the best cheapest price and do its customisation First see me work then Hire me You can also see my Portfolio which reflects some of my PCBs projects In the end i will assure you that you will get professional level and great quality work in the best price Thankyou

@Shrutibimpl

Hello There, You want a low latency ESP32 wireless synchronization system to control five vibration units. I will build a responsive transmitter that mirrors your button press duration exactly across all receivers using high speed protocols for an instantaneous feel. 1) What is the maximum physical distance required between the transmitter and the furthest receiver? 2) Would you like a status LED on the transmitter to confirm that all receivers are within range and connected? 3) Are the receivers intended to be wearable devices or will they be mounted to a fixed surface? We will create a seamless wireless link that feels completely natural, turning your finger movements into immediate physical feedback on all units. Your users will experience perfectly synchronized vibrations that match the rhythm and length of your input, providing a reliable and intuitive tool for signaling. The compact design ensures each receiver is easy to carry and stays powered for long periods, giving you a robust and portable solution that works reliably every time. I will develop the firmware using ESP NOW to achieve sub 10 millisecond latency by broadcasting start and stop commands to all receiver MAC addresses simultaneously. Each receiver unit will utilize a MOSFET driver circuit to handle the vibration motor current safely while protecting the microcontroller. Best regards, Bharat Joshi

@bugm

Hi, I can develop your ESP32-based wireless system with one transmitter and five synchronized receiver units, optimized for low power operation and minimal latency. The transmitter will use a push-button to precisely measure press duration and broadcast the signal using ESP-NOW, ensuring all receivers respond almost instantly. Each receiver will replicate the exact press duration in real time, so if the button is held for 3 or 5 seconds, the vibration output will match perfectly across all units. Since this is a low-power design, I’ll keep the circuitry simple and efficient by driving the vibration motors directly through suitable GPIO control (with proper current limiting and protection), avoiding the need for a dedicated motor driver. The focus will be on compact size, low energy consumption, and stable operation. Each receiver will be battery-powered with a rechargeable setup and include power-saving features like light/deep sleep when idle to maximize battery life. The overall design will be portable, reliable, and responsive for short-range wireless use. I will provide complete firmware (sender + receivers), schematics, PCB design files, and a BOM. I can also assist with testing and optimization if needed. I have solid experience with ESP32, ESP-NOW, and low-power embedded systems, and I’ll ensure the system is clean, efficient, and dependable. Let’s discuss your preferred battery size, motor specs, and form factor to finalize the design. Best regards, Abhinav

@felusion

Hi, I’ve gone through your requirement and I can build this system end-to-end. The approach I’ll use is ESP-NOW based communication so all 5 receivers respond almost instantly. Instead of sending a fixed duration, I’ll stream the button state in real time, so the vibration duration matches exactly with how long the button is pressed, with minimal latency. What I’ll deliver: * 1 transmitter (ESP32 + push button) * 5 receiver units (ESP32 + vibration motor + driver circuit) * Reliable ESP-NOW communication setup * Clean, structured code for sender and receivers * Circuit diagrams and wiring documentation * Tested working system with synchronized response Each receiver will be battery-powered and designed to be compact and efficient. Before we proceed, I just want to confirm a few things: 1. Are you expecting a working prototype or a fully finished product with enclosure? 2. Should I handle sourcing and assembling the hardware, or only design + code? 3. Do you need compact/miniaturized design (PCB), or is a module-based build acceptable? 4. Any specific size constraints for the receiver units? I can adjust the design based on your answers and optimize for size, power, and cost. Looking forward to working on this. Thanks, Love

@husainhadi

Hi, I have hands-on experience with embedded systems, ESP32 development, and wireless communication (including ESP-NOW), along with building compact, battery-powered devices. I’ve worked on projects involving real-time signal handling, low-latency communication, and efficient power management, which are key for your use case. For your system, I will implement: -- ESP-NOW based communication for fast, low-latency broadcasting from sender to all receivers -- Real-time duration mapping so receivers vibrate exactly as long as the button is pressed -- Optimized firmware to ensure near-simultaneous triggering across all 5 receivers -- Stable vibration motor driver circuitry (transistor/MOSFET-based with protection) -- Battery-powered receiver design with charging support (e.g., Li-Po + charging IC) -- Low-power operation using sleep modes when idle I will ensure the system is robust, responsive, and tuned for minimal delay between sender input and receiver action. If needed, I can also assist with enclosure considerations and prototype guidance. Technologies: -- ESP32 (ESP-IDF / Arduino framework) -- ESP-NOW wireless protocol -- Embedded C/C++ -- Low-power design techniques If you’d like, I can also provide a quick architecture diagram before starting to align on the design. Looking forward to working on this. Best regards,

@charlieg38

Hi, I can build a low-latency ESP32 system using ESP-NOW where one sender triggers five receivers with precise duration matching. Includes optimized power design, synchronized triggering, and compact receiver circuits. Ready to start.

@elliannab

Hi, This system fits perfectly with ESP-NOW for fast, synchronized multi-device triggering. Approach: • Sender broadcasts button press + duration signal • Receivers start/stop vibration in real time • Low-latency handling (<20 ms typical) • Sleep modes for battery efficiency I’ll deliver firmware, schematic, and a reliable driver circuit for the vibration motors.

@jenseny2

Hi, The key challenge here is accurate timing synchronization across multiple receivers with minimal latency. Solution design: • ESP-NOW broadcast from sender (no pairing delays) • Event-based messaging: “START” signal on press “STOP” signal on release • Receivers mirror timing instead of calculating locally → ensures identical vibration duration Hardware: • MOSFET-based vibration motor driver • LiPo battery + charging + low-power regulation • Deep sleep / light sleep for efficiency This ensures responsive and consistent behavior across all units.

@leof56

Hi, To achieve true “same-duration” vibration, the system must synchronize events, not just durations. Architecture: Sender Unit: • Button interrupt triggers immediate ESP-NOW broadcast • Sends press + release events Receiver Units: • On “press” → start vibration instantly • On “release” → stop instantly • Optional watchdog fallback if signal is lost Key Features: • Near real-time response (sub-30 ms) • Reliable multi-receiver broadcast • Power-efficient standby modes • Compact PCB design with motor driver This approach avoids drift and ensures all units behave identically.

@HKTD

We specialize in ESP32 development working with clients all over the world. In our experience we have pushed over 100 products to market. Your project specifically is very familiar to us, most products in the electronics industry will need some form of mesh network communication. ESP-NOW is an excellent protocol, we have worked with it a lot in the past. HK Technologies is an innovative engineering company specializing in the design and development of cutting-edge electronic products. We bring ideas to life through a full-spectrum approach that combines PCB design, electrical engineering, software development, and product design.