MicrocontrollerKazi

I’m building a compact, handheld carbon-monoxide detector for use inside busy industrial plants and I need someone who can take the idea all the way from concept to production files. Your job is to engineer the complete electronics stack—sensor interface, signal-conditioning, microcontroller logic, power management, audible/visual alarms—and turn it into a manufacturable PCB. Core requirements • Target gas: Carbon Monoxide only (expandability to other electrochemical sensors is a plus but not mandatory now). • Operating environment: indoor industrial spaces, so the design must tolerate vibration, electrical noise and a wide temperature / humidity range. • Compliance path: the hardware must be laid out so it can pass ATEX, UL and CE certificati...

...button — stops playback immediately Test button — press to play the currently selected audio at current volume; press again to stop Low battery indicator — LED blinks and a short audio tone plays before scheduled audio when battery is low Time set once via small hidden display — no network sync, no app Target: 1+ year battery life on 3–4 AA batteries using deep sleep Technical Requirements Microcontroller: ESP32-S3 (preferred) or STM32L4 — WiFi/BT disabled for maximum battery life. Open to candidate recommendations on optimal variant for ultra-low-power operation. Real-Time Clock: DS3231 with coin cell backup (±2 ppm accuracy) Audio Output: I2S DAC/amp (MAX98357A or better) + speaker connection header Audio quality is critical to the ...

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...(video or repo links) of student projects you have supervised that involve multiple sensors and clean, well-commented code • Your availability for 1- to 1.5-hour sessions • Any suggestions for low-cost components or kits that keep parts sourcing simple Other Technical Requirements: The training will focus specifically on the Arduino Nano microcontroller. The trainer must be proficient in working with the following components and sensors: Microcontroller: Arduino Nano. Sensors: Dual IR Sensors (Line Following), Ultrasonic Sensor HC-SR04 (Obstacle Avoidance), and LDR (Light Intensity Detection). Actuators: DC Motors with L298N/L293D Motor Drivers. Concepts: PWM Speed Control, Sensor Fusion, and Nested Conditional Logic. Key Learning Objectives: The student...

...the **electronics + firmware** that detects drawer activity and reliably sends events to the phone/app which I have already developed. (what I need built): * Recommend the best sensing approach to detect **drawer open/close** (magnetic reed/Hall, microswitch, optical, etc.) and design around the case constraints. * Select components and create a complete electronics design: * **Low-power microcontroller + BLE** (or comparable phone connectivity) * Sensor(s) for drawer state * Battery + charging solution (or wired power if strongly recommended) * LED indicator (subtle, optional but preferred) * Provide: * Schematic, BOM, and PCB layout (compact, manufacturable) * Firmware that broadcasts drawer events to the phone (BLE event + timestamp) * Basic power optimization (sleep modes...

I’m updating the firmware for an STM32-based design and need an experienced C++ developer who is comfortable inside STM32CubeIDE. The codebase already compiles and runs on the microcontroller, but several features still require clean, well-structured implementation, performance tuning and thorough testing directly on the hardware. You’ll be working exclusively with STM32 microcontrollers; no FPGA or other targets are involved. Please be ready to pull the current CubeIDE project from my repository, build it as-is, and then extend it in C++17 (or later) while respecting the existing HAL layer and project structure. Deliverables • Updated CubeIDE project with the new or fixed functionality fully integrated • Clear build instructions and a short change log so...

...straightforward, sensor-based navigation (GPS + RTK or comparable) and obstacle detection that can be sourced with readily available components. Key deliverables • Native CAD files (SolidWorks, Fusion 360, or equivalent) with assemblies and exploded views • Bill of materials listing off-the-shelf parts and estimated costs • Schematics for power distribution, safety interlocks, and any microcontroller/PCB layout • Brief control logic flow showing how the mower will map and follow large-area mowing paths • Assembly and maintenance notes so a small workshop could build and service the prototype I’m happy to discuss trade-offs—tracks vs wheels, lithium vs AGM packs, sensor suites, etc.—but the final design must be practical t...

...sleep by pressing the side button. • Physically tap the screen to enter the PIN code—no Bluetooth, Face ID or Touch ID, just precise mechanical interaction. • Launch the target app, wait for it to load, populate the login screen and navigate onward until the signature page is reached and signed. I imagine a compact gantry or articulated arm driven by servos or steppers, guided by a microcontroller (Arduino, Raspberry Pi, or similar). Because the touch targets are fixed, a predefined set of coordinates should be enough, yet I’m open to an overhead camera and OpenCV calibration so the robot can self-correct for phone positioning or screen rotation. What I need from you 1. Detailed mechanical design files (CAD, STL or DXF) and a complete parts list. ...

...Once activated, device could periodically resend location if movement detected (optional enhancement). Power Management: Battery: Long-life (e.g., lithium-thionyl chloride for extended standby). Solar Support: Mini panel for trickle charging in sunny environments. Efficiency: Ultra-low power consumption in standby (e.g., <1µA draw) to achieve 1-year life. Technical Components (Suggested) Microcontroller: Low-power MCU like ESP32 or STM32 for button logic, LED control, and power management. Positioning: Built-in GPS module (e.g., u-blox) for coordinate acquisition (though pre-programmed, it could verify on activation). Communications: GSM Module: e.g., SIM800/900 for SMS or data transmission. Satellite Module: e.g., Iridium 9603 or RockBLOCK for short-burst data. Sen...

I'm seeking an experienced PCB designer to create a double-layer PCB for a consumer electronics radio project. The PCB will include microcontrollers as key components. Key Requirements: - Design a double-layer PCB - Incorporate microcontrollers into the design - Suitable f...double-layer PCB for a consumer electronics radio project. The PCB will include microcontrollers as key components. Key Requirements: - Design a double-layer PCB - Incorporate microcontrollers into the design - Suitable for consumer electronics use Ideal Skills and Experience: - Proficiency in PCB design software (e.g., Altium, KiCad) - Experience with double-layer PCB design - Knowledge of microcontroller integration - Background in consumer electronics Please provide samples of previous work and relev...

Description: We are developing a prototype of a motor control system based on an existing PCB that uses an ATmega16 microcontroller. The current system controls the speed and torque of the main motor and the speed of a secondary motor. Inputs are presently taken from a custom-made keyboard with tactile push buttons, and motor control is achieved by pulling specific GPIO pins high or low in defined sequences. The objective of this task is to replace the physical keyboard input system with a capacitive touch LCD display, where the on-screen UI buttons will perform the same functions as the existing tactile buttons. The touchscreen interface will control motor on/off, speed, and torque, while ensuring that the existing motor control logic based on GPIO sequences remains functionally th...

I already have the full schematic and the finished PCB files for a board that combines an ESP module with a PIC18F microcontroller. What I’m missing is a clear, practical explanation of how everything talks to each other, especially over UART, and how that interaction is implemented on the physical board. Here is what I need from you: • A step-by-step walkthrough of the signal paths that handle UART traffic between the ESP and the PIC18F, including any level-shifting, buffering, or hand-shake lines that support the link. • A guided tour of the PCB layout that shows where those signals travel—layer changes, vias, ground references, decoupling, and any routing choices that affect integrity or noise. • Simple notes on any supporting circuitry (power ...

I already have the full schematic and the finished PCB files for a board that combines an ESP module with a PIC18F microcontroller. What I’m missing is a clear, practical explanation of how everything talks to each other, especially over UART, and how that interaction is implemented on the physical board. Here is what I need from you: • A step-by-step walkthrough of the signal paths that handle UART traffic between the ESP and the PIC18F, including any level-shifting, buffering, or hand-shake lines that support the link. • A guided tour of the PCB layout that shows where those signals travel—layer changes, vias, ground references, decoupling, and any routing choices that affect integrity or noise. • Simple notes on any supporting circuitry (power ...

I need a custom ELRS (ExpressLRS) solution for drone control, utilizing an STM microcontroller instead of the original MCU. Key requirements: - Improved range - Enhanced security - Dual band - Mesh networking capabilities Ideal skills and experience: - Proficiency in STM microcontrollers, especially STM32 - Strong background in RF communication and protocols - Experience with drone control systems - Knowledge of security implementations in wireless networks - Familiarity with mesh networking technology Please provide relevant experience in your bids.

I’m developing a compact medical-grade board that will sit at the heart of a new vital-signs monitor. The PCB must reliably acquire and process heart rate, blood pressure, and respiratory rate signals, then pass the data to a microcontroller for further analysis and display. Here’s what I need from you: • Complete schematic capture based on my sensor and MCU selections • Four-layer board layout optimized for low-noise biomedical signals (Altium or KiCad preferred) • Manufacture-ready Gerber files, pick-and-place data, and a clearly structured BOM with medical-grade component choices • Design reviews at schematic and pre-release layout stages so we can make sure the board meets IEC 60601-1/-2 spacing, leakage, and isolation requirements •...

...a surface-mount USB-C port on the edge for easy flashing once the body shell is back on. Size must stay close to the original analogue board footprint (about 24 × 18 mm, height under 6 mm) but I can adapt mounting holes or connector positions if you have a cleaner layout idea. Power comes from the standard track pickups (nominal 14–18 V DC), so include an efficient buck or LDO to feed the microcontroller and reed circuitry. I haven’t locked the MCU yet; pick anything small, inexpensive, and easy to program—ATmega, STM32, ESP32, or similar—so long as it supports a simple bootloader I can reach over USB-C. Deliverables • Schematic • PCB layout and Gerbers (KiCad or Altium) • Drill files, pick-and-place, and full BOM with distribu...

...an old PIC microcontroller) • Closed-loop speed regulation • Target range: ~50–1200 RPM • Stable low-speed control required 3. pH Control Arduino • High-impedance pH probe input (JFET/op-amp front end) (circuit is already designed for an old PIC microcontroller) • Analog signal conditioning (circuit is already designed for an old PIC microcontroller) • pH measurement (circuit is already designed for an old PIC microcontroller) • Acid/base pump control (MOSFET driven) (circuit is already designed for an old PIC microcontroller) • Closed-loop pH regulation (control scheme is already designed for an old PIC microcontroller) • Noise immunity critical 6. Temperature Control Arduino • Temperatur...

I’m updating the firmware for an STM32-based design and need an experienced C++ developer who is comfortable inside STM32CubeIDE. The codebase already compiles and runs on the microcontroller, but several features still require clean, well-structured implementation, performance tuning and thorough testing directly on the hardware. You’ll be working exclusively with STM32 microcontrollers; no FPGA or other targets are involved. Please be ready to pull the current CubeIDE project from my repository, build it as-is, and then extend it in C++17 (or later) while respecting the existing HAL layer and project structure. Deliverables • Updated CubeIDE project with the new or fixed functionality fully integrated • Clear build instructions and a short change log so...

...5V air-pump via a relay able to deliver 1.5A. 1. Graphical user interface (GUI) developed for the STM32 to drive the ST7789 display. The detailed requirements for this GUI are presented in Figure 3. 2. GUI developed for the Raspberry Pi display. The detailed requirements for this GUI are the same as for STM32. 3. Software for the Right-leg STM32 microcontroller 4. Software for the Raspberry Pi 5. Software for the Left-leg STM32 microcontroller Top part of screen: Waist status showing ON/OFF, battery and waist airbags status. Green OK, red fault, blue deflating. Middle part of screen: Left and Right leg knee angles displayed at top and bottom using sensor data display as 2D graphs in real time. Sensor graphs are for: o Encoder motor position o Thigh IMU in sagittal pl...

Up! I can deliver a complete end-to-end solution covering PCB design, PIC firmware, and a Windows VB.NET interface for your compact electronics board. I have experience designing multilayer boards in Altium, developing efficient microcontroller firmware with low-power optimization, and building reliable PC tools for device configuration and data logging. You’ll receive a fabrication-ready hardware package, well-structured firmware with compiled HEX and flashing guide, and a user-friendly desktop utility that communicates over USB, streams live sensor data, and logs to CSV. I focus on clean design, power efficiency, and dependable communication between hardware and software. Ready to start as soon as you share the sensor list and mechanical constraints

Hello , I need a complete design for a compact consumer-electronics board that revolves around a PIC microcontroller. The scope spans three tightly-linked parts: • PCB hardware – Produce the schematic and multilayer layout in Altium Designer, include all libraries you create, and deliver the full manufacturing package (Gerbers, drill files, pick-and-place, and a PDF schematic). • MCU firmware – Write well-commented code in MikroBasic (or another PIC-friendly tool if you justify the switch). The firmware must read multiple sensors, exchange data through an efficient serial protocol, and use smart power-saving modes to stretch battery life. Please supply project files, compiled HEX, and a short flashing guide. • PC interface – Build a Windows utility...

I need a complete design for a compact consumer-electronics board that revolves around a PIC microcontroller. The scope spans three tightly-linked parts: • PCB hardware – Produce the schematic and multilayer layout in Altium Designer, include all libraries you create, and deliver the full manufacturing package (Gerbers, drill files, pick-and-place, and a PDF schematic). • MCU firmware – Write well-commented code in MikroBasic (or another PIC-friendly tool if you justify the switch). The firmware must read multiple sensors, exchange data through an efficient serial protocol, and use smart power-saving modes to stretch battery life. Please supply project files, compiled HEX, and a short flashing guide. • PC interface – Build a Windows utility in ...

I already have a working PCB built around an Xsens MTi-630 IMU and an NXP MKV56 microcontroller. What I need now is a technician who can revise the existing firmware so the remote camera head delivers rock-solid motion compensation on set. Your task is to design and embed a custom sensor-fusion routine that blends gyro, accelerometer, and magnetometer data from the MTi-630, then feed that fused orientation into the motor-control loop over CANopen. I’m aiming for a balanced mix of speed and accuracy so operators never feel lag yet still enjoy drift-free performance during long takes. You will be starting from my current codebase (MCUXpresso / NXP SDK), which already handles basic hardware abstraction and CANopen messaging. The focus is on: • Writing or adapting a q...

...for a smart beekeeping monitoring system. The device will monitor two beehives simultaneously and transmit data via LoRaWAN to the "Beep" platform. Project Scope: The goal is to design a PCB that handles power management and interfaces with multiple sensors for two separate hives. The device will be powered by a Solar panel and a Li-Ion/LiFePO4 battery. Core Components & Requirements: Microcontroller & Connectivity: Based on ESP32 with LoRaWAN capabilities. Preference: You can either design around a module (like ESP32-WROOM + RFM95) OR design a carrier board for a dev-board like the Heltec WiFi LoRa 32 V3 (to simplify assembly). Please specify your recommendation in your proposal. Sensors (Interfaces needed for 2 Hives): We...

I need a compact, two-layer PCB whose sole job is to host an IR proximity sensor on one side and a WS2812-compatible LED visible on the reverse. A connector should allow these components to be connected to a separate microcontroller board. Key points to keep in mind • LED type: WS2812B but open to your suggestion • Sensor type: IR proximity sensor, e.g. VCNT2020 but open to your suggestion • Control method: the LED and sensor trace terminate on a connector so an external board can switch it. No on-board logic is required. • LED should be visible on the reverse side of the IR proximity sensor, so either should be mounted on the reverse or use a reverse-mounted LED • Board should be as small as feasible but still be easy to manufacture. If needed the desi...

I’m putting together a small interface that lets a 5 V...optocoupler stage, any necessary current-limiting or pull-down components, fly-back diode protection for the 12 V coil, and the wiring to the relay board. • A bill of materials with exact part numbers so I can order everything immediately. • A short design note (a page or two is fine) explaining the current calculations, isolation boundary, and how the transient suppression is handled. My microcontroller pin can only source a few milliamps, so please size the input resistor accordingly. If you can include oscilloscope screenshots or a quick SPICE plot verifying clean switching, that would be a nice bonus but it’s not mandatory. Looking forward to a straightforward, well-documented solution that I can dr...

I’m building a wearable exoskeleton and need a dedicated PCB that brings all core electronics onto one compact board. The board must integrate: • Microcontroller • DC-DC converter • LDO regulator • IMU • Operational Amplifiers • JTAG header • All required connectors for power, sensors, and external actuators Scope of work 1. Schematic capture with component selection that balances size, efficiency, and heat dissipation. 2. PCB layout optimized for a tight wearable form factor—minimal footprint, clear signal integrity, and robust grounding. 3. Generation of manufacturing deliverables: Gerber files, assembly drawings, pick-and-place files, and a complete BOM. 4. Design review iteration to address any EMI/EMC or rou...

Assalam o alaikum, I am looking for electrical engineers having expertise in following areas:  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. Actually I have multiple projects in different domains of electrical engineering and I already have a team of engineers working on them but due to workload I am looking for few more engineers to be a part of my team and work with us on regular basis.

A NRF52 based low power consumption BLE tag with 4G and GPS capabilities. Features: Microcontroller: NRF52, any GPS + 4G module operable in south america Power Supply: Lithium-ion Battery (600mAh+, auto-switching) Communication: Bluetooth + GPS + 4G Additional Components: RGB LED and Buzzer Reprogramming Method: SWD The board must consume the absolute minimum power (~10uA) until GPS + 4G is enabled via software.

I am looking for a freelancer to design both the schematic and PCB layout in KiCad for an embedded hardware project. Project overview The board will include: -> STM32 microcontroller (H7 series preferred, but open to suggestions) -> Ethernet switch with 3 or more ports ---> One port connected to the STM32 using RMII ---> Two other ports connected to SFP sockets -> The Ethernet switch can be Microchip KSZ8873 or a similar compatible device -> No high-speed requirement: ---> 10 Mbps is sufficient ---> 100 Mbps is more than enough Firmware requirements -> Firmware does not need to be complex -> It is sufficient to: --> Enable the Ethernet controller using STM32CubeMX --> Load a basic example so the board responds to PING -> No application-leve...

...report writing. Day-to-day work will range from breadboard-level prototyping to full simulation and verification, so the stronger your foundations in analogue and digital design the better. The tasks you’ll tackle typically start with a concept sketched in Proteus or Multisim, move into schematic and PCB work in Altium, and finish on the bench or in a virtual lab via LabVIEW or TinkerCAD. Microcontroller and embedded targets rotate between Arduino-based boards, Raspberry Pi modules, and mid-range FPGAs, so comfort switching among those platforms is essential. Core expectations • Design or refine circuits and document the rationale behind every component choice • Build and verify MATLAB/Simulink models that correlate with hardware behaviour • Prototype...

...real-time input pipelines Test directly on Xbox or PlayStation consoles (physical hardware required) Optimize for snap, lock, weld, and track behavior with precise joystick control Debug latency, drift, misalignment, and tracking edge cases Required Experience (Must Have) Cronus Zen experience (scripts, HID behavior, real-world tuning) Ownership of Xbox or PlayStation console for live testing Microcontroller experience (Arduino-class or higher) Strong background in computer vision (YOLO or similar real-time detection pipelines) Experience with transparent overlays (Windows overlay windows, layered rendering, etc.) vGamepad / XInput / virtual controller experience Comfortable debugging timing, latency, and signal stability Strongly Preferred Experience with real-time CV + joystick...

...System will run on a low-power microcontroller (ESP32/Arduino acceptable), read soil and weather data, and autonomously schedule irrigation while managing a small photovoltaic battery budget. A simple web or mobile dashboard should visualise the data. Alongside these flagships, my lab is experimenting with plant-disease image classifiers, self-driving delivery rovers (ROS2, SLAM, path-planning), and GPT-style tutoring chatbots. Each module will be treated as a separate milestone, yet adhere to the same quality bar. Deliverables • Clean, well-documented source code in public or private Git repos • Training notebooks, inference scripts, and hardware-in-the-loop tests where relevant • Deployment instructions for Ubuntu 22.04 or the target microcontroller...

I'm looking for a skilled hardware engineer with firmware experience to design a control system for a domestic heating product. Key Responsibilities: - Design microcontroller and power supply components - Develop basic control logic firmware Ideal Skills and Experience: - Expertise in microcontroller and power supply design - Firmware development proficiency, especially in basic control logic - Experience in temperature control systems is a plus

I need a 4-layer PCB layout that will drive a new consumer-electronics device. The board footprint is roughly 8 inches on its longest side and must sail through my manufacturer’s DFM/DFT checks without a single revision request. Core circuitry includes a microcontroller at the heart, a collection of digital and analog sensors, Wi-Fi & Bluetooth modules, a microphone, speaker, relay, display interface, GUI memory and associated logic. Please route with proper impedance control, isolation for the RF section, and attention to audio trace integrity so that EMI is kept to a minimum. Deliverables • Full Altium, KiCad or Eagle design files (your choice) • Gerber, drill, pick-and-place and BOM ready for turnkey assembly • Layer stack-up, controlled-impedan...

Hi James! Looking to learn how make a therm...Looking to learn how make a thermal printer camera work. My partner and I have not got much experience with electronics and am looking to get a basic prototype made so we can tinker with it and gain an understanding of how it all works. This is an ongoing project for my partner and I and we would be stoked if you could help us out. From our understanding we just need the thermal printer to a microcontroller and image capture, and getting it to print an image when a button is pressed. We want to use the prototype to learn from ourselves and would be really grateful if you could also talk us through how it's all working. Thanks so much! Not sure if this is even totally your ballpark, but we thought you looked great and would love if ...

PCB Design Review Required (ESP32-S3 Based Board) I am looking for an experienced electronics / hardware engineer to review my PCB design and provide detailed feedback. Scope of Review: Schematic correctness PCB layout review (top & bottom layers) Power supply & grounding ESP32-S3 pin usage & constraints Signal...Provided: Schematic (PDF) PCB layout images Gerber files (ZIP) Component list (if needed) Expected Output: Written review with clear points Highlighted issues (critical / medium / minor) Suggestions for corrections & improvements Go / No-Go recommendation before fabrication Budget: ₹1000 (fixed) Quick review preferred (1–2 days). Required Experience: Strong PCB design background ESP32 / microcontroller boards experience Able to explain issues clear...

I’m ready to move from concept to production on a dedicated pump control panel and need a specialist who can take charge of both the hardware and the embedded code. The electronics must be laid out in Altium Designer, and the firmware written for a PIC microcontroller—my platform of choice for this project. The unit will be installed in a dusty setting, so component selection, conformal-coating guidance, and protective routing practices should reflect that environmental challenge. I can share schematics of earlier prototypes as a starting point or we can work from a clean sheet if you prefer. Once the electrical design is firm, I’ll need you to develop and thoroughly comment the PIC firmware, then walk me through flashing and in-circuit debugging so I can mainta...

...(video or repo links) of student projects you have supervised that involve multiple sensors and clean, well-commented code • Your availability for 1- to 1.5-hour sessions • Any suggestions for low-cost components or kits that keep parts sourcing simple Other Technical Requirements: The training will focus specifically on the Arduino Nano microcontroller. The trainer must be proficient in working with the following components and sensors: Microcontroller: Arduino Nano. Sensors: Dual IR Sensors (Line Following), Ultrasonic Sensor HC-SR04 (Obstacle Avoidance), and LDR (Light Intensity Detection). Actuators: DC Motors with L298N/L293D Motor Drivers. Concepts: PWM Speed Control, Sensor Fusion, and Nested Conditional Logic. Key Learning Objectives: The student...

Project Overview We are developing an Event Logger Card (EVL) based on the Texas Instruments RM46 (Hercules Safety Microcontroller). I am looking for a senior embedded systems expert to assist with firmware development, hardware-software integration, and comprehensive testing of the EVL card. Key Responsibilities Develop and optimize firmware using Embedded C. Write and debug code within Code Composer Studio (CCS) 12.2.0. Implement event-logging logic on the RM46 controller, ensuring high reliability and data integrity. Perform hardware-in-the-loop testing and debugging for the EVL card. Assist in peripheral interfacing (SPI, I2C, UART) and memory management for logging data. Required Skills & Qualifications Expertise in Texas Instruments Hercules RM4x series (specifically RM46)...

I’m juggling several small-to-mid size projects built around PIC microcontrollers and need a specialist who can drop in, understand the hardware quickly, and produce clean, well-documented firmware. Most tasks revolve around straight microcontroller programming—setting up peripherals, writing ISR-driven code, optimising timing, and talking to common interfaces such as UART, SPI, I²C or CAN. The exact role may shift from one build to the next: today it could be a closed-loop control routine, tomorrow a lightweight data-logging module, and next week a simple communications bridge. Whichever path we take, the goal is always the same—robust code that compiles first time in MPLAB X, follows Microchip best practices, and ships with concise inline comments so I ca...

...deterministic, and safety-focused. I am looking for an experienced embedded / firmware developer to help implement the behavior engine, emotion logic, audio playback system, and mode handling on a microcontroller platform. Key Principles (Very Important) No AI No machine learning No free conversation No cloud processing of voice Rule-based, predictable behavior Offline-first system Emotion-driven reactions Child-safe & privacy-safe design If your expertise is mainly in chatbots or AI assistants, this project is not suitable. Hardware & Platform ESP32 / similar microcontroller Microphone (sound level & pattern detection only) Speaker (real audio playback, not buzzer) Display for expressive eyes Optional touch input SD card or Firebase O...

...please design for the full 3.0 V–4.2 V range. • All components must be surface-mount parts that are widely available. • Any microcontroller, timer, or driver IC is acceptable as long as it meets the frequency accuracy and low-power requirements; include programming header footprints if firmware is needed. • Keep EMI low and motor startup current in check, using proper decoupling and FET selection. Deliverables 1. Complete schematic (PDF + original CAD). 2. PCB layout files and Gerbers ready for JLCPCB/Seeed. 3. BOM with manufacturer part numbers and one alternative for any critical item. 4. Firmware source and compiled binaries, if a microcontroller is used. 5. Simple test procedure confirming the four preset frequencies, the 20-minu...

The charger for my 48 V–84 V electric two-wheeler needs a small-footprint program that drives six LEDs: one shows the charger is powered, four step through 25 %, 50 %, 75 %, 100 % while the battery fills, and the last one lights up whenever the system detects a fault. The logic has to run autonomously on a low-cost microcontroller that you choose and size, keeping component count minimal so the design stays production-friendly. The job covers complete firmware (well-commented source and compiled hex), a clear pin map for the six indicators, and a brief test routine I can run on the bench to prove each LED triggers at the right voltage thresholds and fault flag. Hand me a schematic snippet or wiring diagram showing the MCU, divider network, fuse tap, and any protection parts...

Project Title: ESP Microcontroller Coding for Pressure-Based System with Motion Sensors & Air Control Project Description: I am looking for an experienced embedded systems / IoT developer to assist with firmware coding and control logic for a hardware-based prototype. The project involves programming an ESP microcontroller to integrate pressure sensing, motion sensing, and air control components. The system should read sensor data in real time and control an air pump and solenoid valve based on predefined logic and conditions. Key Components Involved: ESP microcontroller (ESP32 / ESP8266 – open to recommendation) Pressure sensor(s) Accelerometer & gyroscope (IMU) Air pump Solenoid valve Relays / motor drivers (if required) Basic power management...

I need software to control laser pulsing and modulation using a microcontroller GPU. The control interface should allow for user manual input. Key Requirements: - Develop software for laser pulsing and modulation control. - User manual input interface for operation. Ideal Skills & Experience: - Experience with microcontroller programming - Knowledge of laser systems and control - Strong background in GPU software development - Ability to create intuitive user interfaces

...create a frequency counter with the following specifications: - Utilize the Nuvoton N76E003 microcontroller to accurately measure frequencies from 1 Hz to 1 MHz - Implement a 7-segment display to show the frequency measurements - Ensure the system is designed to be powered by an external power source (excluding batteries) Your responsibilities would include: - Developing the necessary software to enable the N76E003 to function as a frequency counter - Designing the circuitry that interfaces with the 7-segment display for accurate and clear frequency readings - Ensuring the overall system is reliable and efficient Ideal candidates should have: - Proficiency in working with the Nuvoton N76E003 microcontroller - Experience in developing frequency counters or similar measur...

I need to interface the Nuvoton MS51FB9AE microcontroller with the ADS1115 I2C ADC for high-resolution voltage measurement. Key requirements: - Use ADS1115 for 16-bit voltage measurement - I2C communication with Nuvoton MS51FB9AE - High accuracy and reliability Ideal skills and experience: - Experience with Nuvoton microcontrollers - Proficiency in I2C communication protocols - Familiarity with ADS1115 and ADCs in general - Strong background in embedded systems programming

..."night mode" and at that moment the auxiliary lights turn on automatically. If we additionally activate the right turn signal indicator, the right auxiliary light will turn off so that the turn signal has more prominence and oncoming drivers can better identify the action the motorcycle is about to make. Elements to Use: This is the part where I hope you can help me. We will use an ESP32 microcontroller. I would like it to have WiFi and Bluetooth, with a good amount of memory since it will have a web server running (for configuring the lights as the client needs) The system will have 6 output lines (15A lights, charging USB, rear light, etc.) Each line will be controlled by D4184 MOSFETs in parallel. It's important that the MOSFETs can operate with PWM so we can ...

Project Brief: Stealth-Mod...product. • The functionality must be fully automatic. No user interaction should be needed after parking. • No visible alterations (e.g., wires, unusual controls, abnormal movement patterns). • Power should remain efficient — preferably still battery-powered or with a hidden upgrade that doesn’t draw attention. Ideal Freelancer Profile: I’m looking for someone with experience in electronics, microcontroller programming (e.g., Arduino), or embedded systems. Ideally, you’ve worked with consumer electronics, automotive modifications, or smart devices before. Both functionality and stealth are equally important for this project. ⸻ Let me know if you have questions or need specific details (such as device models). ...