Embedded Systems for Consumer Electronics

@MuhammadUzair16

Hi I am an embedded systems engineer with over 16 years of experience designing control electronics, firmware, HMI panels and payment-enabled consumer/industrial machines from concept through prototype and small-batch production. Yes, this is the type of project I undertake. For this stage I would review the existing controller/electronics, decide whether it is better to retain or replace the controller, then propose a simple front-end architecture covering the UI, weight/dispense control, safety interlocks and unattended card/POS integration. The aim would be a practical prototype path, not just a concept drawing. I can support the electronics, control software/firmware, UI panel design, commissioning and later small-batch manufacture support if the prototype is successful. The quoted amount is for the initial feasibility review, development approach, indicative cost/timeline and technical recommendations; the full prototype build can then be costed accurately after inspection. Before estimating the full build I would need electrical drawings/photos, controller and motor/valve details, scale/load-cell information, available POS terminal/API options in Australia, and any compliance or installation constraints. Please contact me to discuss details.

@amelectronics

Hi, thanks for sharing the details. Yes, this is the type of project I can help with. I have experience in embedded systems, custom PCB design, ESP32/MCU-based controllers, motor and sensor interfacing, and industrial control hardware. I’d be happy to review your existing machine and discuss whether the current controller can be retained or should be replaced. Please share the concept documents, and I’ll review them and recommend the best technical approach, estimated development timeline, and overall solution.

@engrusmanfaiz

Hello, Yes, this is exactly the type of industrial automation project I undertake. I can review your existing machine, assess whether the current controller should be retained or replaced, design a new user-friendly HMI and control system, integrate POS payment and dispensing logic, and support prototype development through commissioning. To provide an accurate estimate, I’d need the current electrical schematics, controller details, I/O list, dispensing mechanism specifications, and your concept documents. Based on the system complexity, a prototype typically takes 6–10 weeks, with a detailed cost proposal prepared after the initial technical review.

@hayteekeys

HI, KINDLY READ THROUGH MY PROPOSAL I will help redesign the control system of your chalk dispensing machine into a simple, intuitive commercial product with modern UI, card payment integration, and reliable automation. MY APPROACH ✅ Phase 1: Review existing machine electronics/mechanics and assess controller retention vs full replacement. ✅ Phase 2: Design simplified user interface, new control panel, control logic, and payment terminal integration. ✅ Phase 3: Develop software, build/test prototype, and commission the system. RELEVANT PROJECTS - Multiple industrial dispensing and vending machine retrofits with touch interfaces and POS payment systems. - Custom control system upgrades for user-friendly commercial equipment. DELIVERABLES - Feasibility assessment and recommended architecture - New control panel design and integrated software - Working prototype with testing and documentation QUESTIONS 1. Can you share the attached concept documents and photos/details of the current machine? 2. What is the existing controller type and any known I/O requirements? 3. Preferred payment terminal brand or any specific UI preferences? I undertake electronics, software, and payment integration in-house. This is exactly the type of project I handle regularly. I can provide detailed timeline and cost estimate after reviewing your documents (typical prototype in 4-8 weeks). Ready for a call or inspection.

@leonidye

Hi, Thanks for sharing the concept. This is the type of embedded/mechatronics product development I can support, especially where an existing industrial dispensing machine needs a new user-facing control system, simple UI, payment workflow, and reliable automatic dispensing. My recommended first step is a feasibility and architecture review. I would inspect the existing controller, sensors, actuators, weighing method, motor/valve control, safety interlocks, and available electrical interfaces, then advise whether the current controller can be retained or whether a new embedded control panel is better. From there, I can support electronics design, PCB/control panel development, firmware, dispensing control logic, weight-based stop control, POS/payment terminal integration planning, prototype testing, and small-batch manufacturing preparation. The user workflow can be kept very simple: select 100 g / 200 g / 300 g, authorize payment, dispense to target weight, stop automatically, and show clear status/fault messages. Before final pricing, I would need photos/videos of the machine, wiring diagrams if available, actuator/sensor details, weighing accuracy target, power supply details, preferred POS provider, and any compliance requirements. Regards,

@hayat38402

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 Electrical and Electronics 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:  Antenna Design (CST, HFSS)  Embedded C Programming.  VHDL/Verilog, Quartus/Vivado, LabVIEW/ Multisim/PSPICE/VLSI  MATLAB/SIMULINK  Network Simulator NS2/NS3  Microcontroller like Arduino, Raspberry Pi, FPGA, AVR, PIC, STM32 and ESP32.  IDEs like Keil MDK V5, ATmel studio and MPLab XC8.  PLCs / SCADA  PCB Designing Proteus, Eagle, KiCAD and Altium  IOT Technologies like Ethernet, GSM GPRS.  HTTP Restful APIs connection for IOT Communications. Also, we have good command over report writing, I can show you many samples of our previous reports. Kindly consider us for your project and text me so that we can further discuss specifically about your project's main goals and requirements.

@hamzazayyad

Hello, Your project is a great fit for my experience. I have 15+ years of experience designing industrial control systems, embedded electronics, STM32 firmware, custom PCBs, HMIs, and automation equipment. I recommend treating this as a complete control-system redesign while reusing the existing dispensing hardware where practical. The first step is reviewing the current electronics, sensors, actuators, and control logic to determine whether the existing controller should be retained or replaced with a modern embedded controller. I can provide: • Review of the existing machine and electronics • New control panel and intuitive user interface • Embedded firmware and dispensing control logic • Integration with weighing sensors and dispensing hardware • POS/card payment terminal integration • Schematic and PCB design • Prototype assembly, testing, and manufacturing support To prepare an accurate estimate, I would need photos, electrical drawings (if available), details of the dispensing mechanism, sensors, controller, and preferred payment terminal. I look forward to discussing your project. Best regards, Hamza Embedded Systems Engineer | STM32 | PCB Design | Industrial Automation

@yaroslavmark

Hi, I have 12+ years of experience developing industrial embedded systems, delivering 40+ production-ready hardware and control solutions including STM32/ESP32-based controllers, HMI interfaces, motor control, weighing systems, and industrial automation with complete schematic, PCB, firmware, and prototype support. I have extensive experience integrating sensors, industrial I/O, communication interfaces, and commercial hardware into reliable production systems. Approach ✅ I will review the existing machine electronics, dispensing mechanism, sensors, and controller to determine whether reuse or complete replacement provides the best long-term commercial solution. ✅ I will design a simplified control architecture including HMI, dispensing logic, weight feedback, industrial safety features, and integration with a certified payment terminal through its supported API or interface. ✅ I will develop the electronics, firmware, prototype integration, validation plan, and complete documentation while supporting commissioning and future production. Questions ✅ What controller and dispensing hardware are currently installed, and are electrical schematics or PLC documentation available? ✅ What weighing hardware is used to achieve the dispensing target, and what accuracy and repeatability are required? ✅ Which unattended payment terminal or payment provider do you intend to use for integration? Best, Yaroslav

@tetianam8

⭐⭐⭐⭐⭐ I've carefully reviewed your project, and this is exactly the kind of product development project I enjoy—transforming an existing industrial machine into a reliable, user-friendly commercial system. My recommendation would be to begin with a technical assessment of the existing machine to determine whether the current controller can be retained or if replacing it would provide a more robust, maintainable solution. From there, I'd develop a simplified control architecture, intuitive operator interface, payment terminal integration, and the dispensing logic needed for accurate weight-based dispensing. Recommended development phases: Machine inspection & feasibility review System architecture and controller evaluation Electronics, HMI & payment integration Prototype assembly, testing & commissioning Documentation and support for small-batch production To prepare an accurate estimate, I'd like to review the existing electrical drawings, controller details, load cell specifications, and photos of the current system. Once that's complete, I can provide realistic costs, milestones, and timelines. I'm happy to collaborate throughout the process and support the project beyond the prototype stage if you move into production. I look forward to discussing your concept and recommending the most practical and scalable solution.

@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

@sakshis576

As an experienced freelancer in electronics and embedded systems, I passionately believe I can drive the innovative changes you're seeking in your dispensing machine. My comprehensive skills include PCB layout design, which is vital to integrate your new control system effectively. Moreover, I have a proven track record of transforming complex mechanisms into simplified user interfaces. Your goal of creating a commercial product that's intuitive for first-time users aligns perfectly with my approach.

@mobiwebsolutions

✋ Hi There!!! ✋ THE PROJECT GOAL: The Goal of the project:- Redesign your dispensing machine with a modern embedded control system, intuitive user interface, secure payment integration, and reliable automated dispensing. I carefully read your complete project description and understand you need a full review of the existing electronics, evaluation of the controller, new control panel, embedded software, POS integration, dispensing logic, prototype testing, and a scalable design for future production. With 9+ years experience as a full stack developer, I am the best fit to deliver a practical, reliable, and production ready solution. • Electronics review, embedded control system design, and intuitive UI development • POS integration, dispensing logic, prototype testing, and database management where required • Complete documentation, testing, commissioning, and full source code delivery at project completion I already completed similar embedded systems, industrial automation, and smart dispensing projects with hardware and software integration. Looking forward to chat with you for make a deal Best Regards Elisha Mariam!

@cesur135

As a seasoned engineer with a vast experience in industrial automation projects, I firmly believe that I can bring immense value to your consumer electronics project. My proficiency in system software development and control using SIEMENS TIA Portal, Simatic Manager and WinCC SCADA aligns perfectly with the requirements of redesigning the front-end control system for your dispenser. In addition to my comprehensive understanding of embedded systems, I have proficiently worked with both DELTA and ABB PLC programs (amongst others) which positions me well to grasp and adapt to any programming language or software specifications for your project. Furthermore, my expertise extends beyond software development into hardware design utilizing E-PLAN P8 V2.6 and PCB layout creation. Combined with my success in electrical panel works and field applications, your project will not only benefit from seamless integration but also an optimized user interface design to ensure your product is as intuitive as possible. I assure you

@danish2051

I am an Embedded Systems Engineer with hands-on experience in ESP32, STM32, Arduino, IoT solutions, PCB design, and industrial automation. I specialize in developing complete hardware and firmware solutions from concept to production. My experience includes sensor integration, wireless communication, data logging systems, Ethernet and Wi-Fi connectivity, MQTT communication, cloud integration, and custom PCB development. My expertise includes: • ESP32 Firmware Development • STM32 Firmware Development • Arduino Projects • PCB Design using Altium Designer • IoT Solutions (Wi-Fi, BLE, Ethernet, MQTT) • AWS IoT Integration • Sensor Integration and Calibration • Data Logging Systems • Industrial Automation Projects • Embedded Linux Development • Serial Communication (UART, RS485, Modbus) • I2C, SPI, CAN Bus Development • Product Prototyping and Testing Recent project experience includes: • ESP32 Ethernet-based monitoring systems • BLE sensor networks with multiple wireless nodes • Engine dynamometer data acquisition systems • Industrial pressure, temperature, RPM, and level monitoring systems • MQTT-based cloud monitoring solutions • Custom PCB design and manufacturing support I focus on delivering reliable, well-documented, and production-ready solutions while maintaining clear communication throughout the project. Let's discuss your project requirements and build an efficient solution together.

@mahig47

Hello! As per your project post, you are looking to transform an existing industrial dispensing machine into a commercial consumer product by redesigning its control system, user interface, and software while integrating it with the existing dispensing hardware. The goal is to create a simple, reliable, and production ready solution that enables users to select a refill quantity, complete a contactless payment, and automatically dispense the correct amount with minimal user interaction. My focus will be on delivering a complete embedded systems solution featuring evaluation of the existing electronics and controller, feasibility assessment, new control panel and user interface design, dispensing logic development, hardware integration, unattended card payment terminal integration, weight based dispensing automation, prototype assembly. I specialize in embedded systems, IoT solutions, firmware development, control systems, touchscreen interfaces, hardware integration, payment terminal integration, and prototype to production product development. My focus will be on building a reliable, intuitive, and maintainable system that provides a seamless experience for first time users while ensuring long term scalability. Let’s connect to discuss the concept documents, evaluate the existing machine, and determine the best technical approach for building a reliable commercial product. Best regards, Nikita Gupta.

@shivkantverma

Hi, Greetings.! I am interetsed to work on your project. Please discuss design details. Looking forward to work with you. Thank you Shivkant

@mcollinscalz

Hello my name is Collins and I am a robotics and automation engineer with extensive experience in industrial machine control, embedded systems, and hardware-software integration. I am well-positioned to lead this redesign. I handle electronics, control logic, and payment terminal integration (POS) in-house, ensuring a seamless interface between your existing dispensing hardware and the new user-facing control system. Proposed Development Approach: Audit: Review existing controller capabilities to determine if a retrofit (using modern PLCs or microcontrollers) or a complete replacement is the most cost-effective path for reliability. UI/UX Design: Develop an intuitive, high-visibility interface tailored for rapid, first-time user interaction. Hardware Integration: Design the new control panel, integrate secure POS hardware, and implement weight-sensor feedback loops for precise dispensing. Testing: Prototype assembly, validation of payment flow, and automated dispensing cycles. Relevant Experience: I have previously retrofitted industrial machinery by integrating modern control systems and sensor-based automation. I would welcome a call to inspect your machine. Once I review your concept documents and verify the existing electrical interfaces, I can provide a detailed roadmap, firm cost estimates, and a production timeline for the prototype. Best regards,

@mahmoudralizadeh

Hi , I have carefully reviewed your request to redesign the control system and user interface of your industrial dispensing machine to transform it into an intuitive commercial product. With over 10 years of experience in Embedded Systems, Linux/SBC Development, and GUI/UX Design for Hardware (Raspberry Pi, Qt/Python, Custom PCB), I have successfully delivered similar projects involving precision weight-based dispensing and unattended payment integrations. Here is how I plan to approach your project to ensure a robust, commercial-grade product with a modern, user-friendly interface: 1. Key Deliverables & Technical Approach Raspberry Pi Powered Touchscreen GUI: We will use a Raspberry Pi (e.g., Pi 4 or Compute Module 4) driving a high-resolution color touchscreen. This provides a modern, responsive, and rich UI/UX (developed via Qt, Python/PySide, or Electron) featuring: Fluid step-by-step animations for first-time users (e.g., “Place Bag” -> “Select Weight” -> “Tap Card”). Large, highly responsive touch-targets for 100g, 200g, and 300g selections. Real-time progress bars showing active dispensing weight. Seamless integration of diagnostics, calibration screens, and multi-language support. Precision Weight-Based Dispensing: Integration of a load cell system (using high-resolution ADCs like ADS1232/HX711) under the bag platform. The Raspberry Pi / Controller will implement a two-stage dispensing algorithm (fast flow followed by a trickle flow) to compensate for falling material and avoid overshoot. Unattended POS Integration: Integration of a contactless payment terminal (e.g., Nayax, Castles) using industry-standard protocols (MDB, Serial API, or TCP/IP) communicating directly with our Raspberry Pi software to trigger the dispensing cycle only upon authorized payment. System Assessment & Control: Review of your existing machine’s wiring, actuators (motors/valves), and safety limits. We will decide whether to bypass or replace the current controller for maximum reliability. Robust Linux-Based System Design: Implementing read-only filesystem configurations (to prevent SD card corruption on sudden power cuts) and hardware watchdog systems for 24/7 industrial-grade reliability. 2. Proposed Phased Roadmap & Timelines Phase 1: Feasibility & UI Design (1-2 weeks) Reviewing machine specs/wiring diagrams. Creating GUI wireframes (screen flows) for your approval. Selecting the Raspberry Pi model, touchscreen panel, load cell, and POS model. Phase 2: GUI & Firmware Development (4-6 weeks) Developing the interactive Raspberry Pi GUI application. Developing the control state machine (Idle -> Selection -> Payment -> Dispense -> Finish). Integrating the weighing/calibration logic and POS communication drivers. Phase 3: Integration & Testing (3-4 weeks) Wiring the Raspberry Pi / IO interface board to the existing dispensing motors/valves. Tuning the flow-rate cut-off parameters for accuracy. Validation of the contactless payment flow and user interface diagnostics. Phase 4: Small-Batch Manufacture Prep (Optional) Designing a custom Carrier Board (PCB) in Altium for the Raspberry Pi Compute Module to replace prototype wiring. 3. Why Choose Me? End-to-End Execution: I handle GUI/UX design, SBC integration, hardware interface boards (PCB design), software development, and payment APIs in-house. Industrial Focus: I design with noise isolation, dust protection, and ESD protection in mind—vital for a chalk dispenser. Production Mindset: I don’t just build a working breadboard; I design with DFM (Design for Manufacturability) in mind so you can easily scale to small-batch production later. 4. Next Steps & Questions for You To give you a precise quote, could you share: The concept documents you mentioned? The operating voltage/type of the existing dispensing motor (AC, DC, Stepper)? The target region for deployment (to select the appropriate POS terminal provider)? I am ready to arrange a call to discuss the UI wireframes or inspect the machine specifications. Looking forward to collaborating with you! Best regards,

@Specgi

I am interested in contributing to Embedded Systems development for Consumer Electronics, with a focus on designing reliable, efficient, and scalable firmware and hardware integration solutions. My approach begins with understanding product requirements, including performance expectations, power constraints, user interaction needs, and cost targets. This allows me to define a clear embedded architecture that aligns with both functional and manufacturing requirements. In the development phase, I would work on firmware design, microcontroller selection, and peripheral integration to ensure smooth communication between hardware components and software logic. This includes implementing real-time control systems, optimizing power management, and ensuring stable performance under varying operating conditions. I would also prioritize robust debugging, testing, and validation processes to guarantee product reliability and compliance with consumer electronics standards. Overall, my goal is to deliver embedded system solutions that are efficient, cost-effective, and production-ready. By combining strong hardware-software integration with practical engineering design, I aim to create consumer electronic products that are responsive, durable, and user-friendly while maintaining scalability for future product iterations.