Microcontroller jobs
I am building a compact, production-ready PCBA that combines a low-power microcontroller with a quad-band GSM module to run stand-alone automation tasks in the field. Its core role is to read temperature, motion, and pressure sensors, make decisions locally, and trigger actuators or alarms while also pushing status updates or alerts over the GSM link (SMS, GPRS, or MQTT—whatever proves most reliable). Scope of work • Schematic capture and multilayer PCB layout, including antenna matching and power-supply conditioning for the GSM current peaks. • Firmware that handles sensor polling, on-board data processing, and a simple AT-command stack to manage the modem. I prefer clean, well-documented C/C++—an RTOS is fine if it keeps timing tight. • Complete m...
...enclosure for an ESP32 retro display gadget. The design must be optimized for FDM printing (2-part design: Front Main Body + Screw-on Back Cover). I have all the specific component links so you can use exact CAD dimensions: Components & Exact Links: 1. Display: 2.4" TFT LCD ST7789 (320x240) SPI module Link: 2. Microcontroller: ESP32 DevKit V1 (30-pin, USB-C version) 3. Mainboard: Double-sided prototype perfboard, exactly 70 mm x 50 mm 4. SD Card Reader: Standard Arduino SPI SD card shield module Link: 5. Rotary Encoder: EC11 Rotary Encoder with push-button (Shaft L=15mm, threaded bushing M7) Link: https://allegro.
I’m building a high-speed communication interface on an STM32-based board and need production-ready firmware written in C/C++. The microcontroller is an ARM Cortex-M series device, and the single most important goal is to move packets through the interface as quickly and reliably as possible—latency can be modest as long as overall data throughput remains very high. You will design and code the full communication stack, configure the peripheral clocks, DMA, interrupts, and buffering strategy, then expose a clean API that my application layer can call from RTOS or bare-metal. Low-level register work is fine, but you’re equally welcome to leverage STM32 HAL/LL or CubeMX if that accelerates development; the final code must compile under STM32CubeIDE or GCC-based Ma...
...Hardware Engineer – Schematic Capture, DFM-Optimized PCB Layout & Production Package (Turnkey JLCPCB Assembly) Job Description: Honeycomb LLP is seeking an experienced embedded hardware and PCB design engineer to take a product design from initial block diagram/specifications through complete schematic capture, PCB layout, and turnkey assembly package delivery. The board will host an embedded microcontroller ecosystem (e.g., ESP32 / RP2040 / STM32) interfacing with sensors and power management circuits. The final design must be fully optimized for cost-effective manufacturing and assembly via JLCPCB SMT services. Scope of Work & Responsibilities: 1) Schematic Capture: Design modular, production-ready schematics in KiCad (latest stable version) adhering strictl...
...sake. Pehle prototype mein beautiful casing zaroori nahi hai. Pehle hamara focus hai: Working + Reliable + Low Cost 4. Components Aap apni technical knowledge ke according sabse suitable aur economical components suggest karein. Humein unnecessarily expensive components nahi lagane hain. Prototype mein requirement ke according ye components ho sakte hain: - Wireless receiver module - Microcontroller, agar zaroori ho - Audio decoder/DAC, agar zaroori ho - Audio amplifier ya amplifier interface - Power supply/power regulation - Antenna - Speaker output - Volume/control section, agar zaroori ho - PCB - Connectors - Indicator LED - Anya required protection components Lekin final component selection aap technical requirement ko dekhkar karein. Hum chahte hain ki jahan possib...
...└───────────────┼──────────────────────────────────────────┘ │ Pure Sinusoidal Current (Chopper) │ ▼ ┌──────────────────────────────────────────────────────────┐ │ NEMA STEPPER MOTOR (EFFECTOR) │ └──────────────────────────────────────────────────────────┘ 3. Subsystem Requirements for the EngineerA. Microcontroller Unit (MCU)Recommended Hardware: ESP32 or STM32 (F103 series or higher). Avoid legacy Arduino Uno microcontrollers due to insufficient clock speeds for simultaneously handling high-resolution encoder interrupts and generating high-frequency pulse Core Tasks:Quadrature Encoder Decoding: Configure input pins with hardware interrupts on rising/falling edges for Channels ...
...enclosed and dust-managed as far as practical. Power button A proper monitor-style tactile button (no improvised paper/copper switch) built into the bezel or underside. One press powers on both the laptop board and the monitor; a second press / OS shutdown powers off both. Wire this via the laptop board's power-switch header and the monitor driver board's power line (relay, MOSFET, or small microcontroller — your choice, please explain). Rear/bottom I/O (must be reachable from the underside of the monitor) 1× DisplayPort out 1× HDMI out 1× 3.5 mm audio (aux) jack 1× USB‑C 1× 5 GbE Ethernet (if the board has no 5GbE, use a quality USB‑C/Thunderbolt 5GbE adapter mounted internally) Plus a few USB‑A ports from the hub for keyboard/mouse ...
We are seeking an experienced PCB designer to create a compact, single-board PCB that integrates the following components: - High-precision GNSS receiver IC (u-blox ZED-F9P) - ESP32-S3 Wi-Fi/Bluetooth microcontroller module - 9-axis IMU (Bosch BNO055) - Buck-boost power management circuit for single-cell Li-Ion battery operation - Input protection circuitry (over-voltage, over-current, reverse polarity) - Dual antenna connectivity (SMA and connectors) The board must be production-ready, reliable in field conditions, and designed per industry standards. Deliverables include schematic, PCB layout files, BOM, and Gerber outputs. The designer can use KiCad or EasyEDA as the design tool. Full schematics, pin allocations, firmware interface details, and application context will be shar...
I have a new electronic product in development and now need its PCB designed from the ground up. The schematic is still evolving, so I’ll be collaborating closely with you to finalise part selections, track widths, stack-up, and overall board size. Depending on how our architecture settles, the board may integrate a microcontroller, on-board power management, and several sensor interfaces, so please be comfortable routing mixed-signal and power domains. Here’s the workflow I have in mind: first we confirm the schematic and component footprints, then move into the layout, DRC, and signal-integrity checks. I’d like all design work done in a mainstream package—Altium Designer, KiCad, or Eagle—so the files remain editable on my end. Deliverables I’l...
I’m building a compact digital clock timer that uses a six-digit seven-segment display, runs from a rechargeable Li-Po cell, and tops up through a USB-C port with on-board charging circuitry. The firmware needs to cover three operating modes: a standard alarm clock, a configurable countdown timer, and a Pomodoro-style work cycle. Here’s what I need from you: • Complete schematic with microcontroller selection, Li-Po charge/protection IC, buzzer driver, speaker, and all support components. • PCB layout optimized for low power and minimal footprint while keeping the USB-C routing compliant. • BOM • Production-ready Gerbers, drill files, and pick-and-place data. • Simple bootloader or ISP header so I can reflash firmware easily. (is it...
...for outdoor exposure. Deliverables 1. Full schematic with design notes explaining part selection, especially power devices, magnetics, and protection circuitry 2. Optimised multilayer PCB layout (Altium, KiCad, or Eagle) ready for Gerber/ODB++ release 3. Complete, cost-ed Bill of Materials with supplier MPNs and a short justification column for each critical part 4. Firmware (if a microcontroller handles PWM charging or display) with source code and commenting 5. Test plan covering efficiency, load regulation, protection trip points, and thermal performance Acceptance criteria • Prototype simulation or bench data showing ≥90 % efficiency at 200 W, safe operation up to 300 W • All three protections proven in the test report • No hotspot exceedin...
I need a compact firmware-and-hardware solution that lets a PIC microcontroller, programmed with the XC8 compiler, manage a battery-powered power supply built around a lead-acid pack. Here is what I am after: the PIC should start up from the battery, regulate or switch the output rails as required, continuously read the pack voltage, temperature or any other basic health indicators, and trigger clear actions (for example, low-voltage cutoff or status signalling) before the battery reaches critical limits. A simple serial, I²C or even LED indicator scheme is fine for status feedback—as long as I can read the key parameters easily during bench tests. Please base the code on MPLAB X + XC8 so I can compile and tweak it locally. If you prefer a specific mid-range PIC tha...
...well-structured C firmware to bring it to life. The goal is solid, standards-minded code that will: • keep the inverter phase-locked to the utility grid (grid synchronization), • sample and report key electrical parameters in real time (power monitoring), and • trigger a fast, orderly shutdown whenever limits are exceeded or the grid disappears (safety shutdown). I will share the full microcontroller pin-map, schematic details, and any manufacturer SDKs I already have. You’re free to work with bare-metal C or leverage vendor libraries as long as the final build remains portable and easy for me to maintain. Clear comments, interrupt-safe routines, and modular files are essential so I can tweak set-points or add features later. Deliverables –...
...What I expect from you • Complete schematic with component values, coil connection, gate-drive stage, protection (over-current / over-temp), and USB-C PD or DC supply trigger circuitry. • PCB layout ready for fabrication, sized to a practical rectangular footprint that still manages thermals at 100 W. • Bill of materials with part numbers that are actually orderable today. • Simple microcontroller or discrete logic code (if required) that lights each LED at the correct power step and handles the rotary input. Acceptance checklist 1. Board delivers 100 W continuously from either input without exceeding safe component ratings. 2. LEDs change accurately in 10 W steps when the dial is turned. 3. No display or extra UI elements are present. 4. Ge...
...building a compact IoT board that can collect sensor data, push it wirelessly to the cloud, and drive simple actuators—all on one reliable PCB. At the heart of the design I need a low-power microcontroller paired with the necessary sensors; wireless connectivity (Wi-Fi, Bluetooth or whichever protocol you recommend) will complete the link to the outside world. Here’s what I expect you to deliver: • Schematic and PCB layout files (Altium, KiCad, or similar) • Optimised BoM with readily available parts • Gerbers, pick-and-place, and fabrication notes • Basic firmware pin-map to confirm that the microcontroller, sensors, and control lines are correctly routed Please send a concise but detailed project proposal that shows how you&rsquo...
...sensing/display as the primary function; which specific parameters we track (temperature, humidity, air-quality or others you suggest) and how we map them to colour shifts, patterns, or even a numeric read-out is still open. I’m keen to hear creative approaches that keep the interface intuitive at a glance. I picture a compact board—Arduino, ESP32, Raspberry Pi Pico or a similarly low-power microcontroller—driving addressable LEDs. It should run from a single USB-C or battery pack, sleep efficiently when conditions are stable, and wake instantly on changes. A simple calibration routine and a way to tweak thresholds via serial or Bluetooth would be ideal. Deliverables • Schematic and full BOM ready for ordering • Clean, well-commented firmware (C/C+...
...that brings together three key blocks: a microcontroller core, several on-board sensors, and a stable power-supply section. I will provide the preliminary schematic notes and the part shortlist; you handle the full schematic capture, board layout, DRC/ERC checks and the usual clean-up so the files are manufacturing-ready. Please keep the board footprint compact and component placement serviceable for hand-assembly during the first test run. Deliverables I expect • .sch and .brd files from Eagle • Gerber and drill set zipped for the fab house • A concise BOM with manufacturer part numbers • Brief layout report noting any design compromises or items that need attention in the next spin If you have recent experience creating microcontroller-...
Project Description I am looking for an experienced electronics and embedded systems specialist to help with the design and development of electronic projects. The project may involve circuit design, Arduino, ESP32, microcontrollers, PCB design, Proteus simulation, firmware development, troubleshooting, and testing. Requirements - Circuit and schematic design - Arduino / ESP32 development - Microcontroller programming - PCB design - Proteus simulation - Embedded systems and firmware - Electronics troubleshooting - Clear technical documentation The selected freelancer should be able to understand technical requirements, propose an efficient solution, develop the required hardware/software, and provide all necessary project files and documentation. Please include examples of pre...
...until the level reaches low. If the level does reach low before 30 seconds the pumping should stop. The pumps will stop when low is detected. To give even loading of the pumps they are to be used alternately, e.g. if on one pump cycle P1 starts first and P2 is the ‘back up’ then on the next cycle P2 will start first and P1 is the ‘back up’. The system is to be controlled by an Arduino microcontroller. The pumps can be mimicked by LEDs*. Switches can be used to represent the LOW and HIGH transducers. The program should inspect the input switches at regular intervals and take appropriate action. *If you chose to use the UnoArduSim then you can use its motor simulators to model the two pumps. A further enhancement would be to use a potentiometer as ...
The task is to design and document a practical wa...reliably distinguish a good head from one “en corto” under real-world conditions. Acceptance criteria 1. Head with deliberate short is detected in under 5 seconds. 2. Healthy head shows impedance spread within ±10 % of documented Epson specs. 3. All build files compile and flash without error using free toolchains (Arduino IDE, PlatformIO, STM32CubeIDE or similar). You may choose the microcontroller platform—Arduino, ESP32, STM32 or another—as long as it is easily sourced. Keep the firmware well-commented so I can adapt thresholds later. If you have tackled similar piezo printhead diagnostics before, please mention it when we start; otherwise, a brief outline of your proposed measurement me...
...* MOSFET based H-bridge * SPWM control * Battery charger / AC charging preferred * Automatic transfer between AC and inverter preferred * Short-circuit protection * Overload protection * Battery under-voltage and over-voltage protection * Over-temperature protection The package should include: * Complete schematic * Editable PCB design files * Gerber files * BOM * Firmware/source code * Microcontroller programming files * Transformer specifications * Calibration instructions * Test procedure * Technical support during prototype testing The design must already have been **built and tested on real hardware**. Please provide: 1. Photos or videos of the working inverter. 2. Output waveform measurements. 3. Maximum tested load. 4. PCB photos. 5. Information about units already ma...
...for turnkey SMT assembly. pos file: Designator,Val,Package,Mid X,Mid Y,Rotation,Layer U1,nRF5340,aQFN-94,12.5000,24.1000,90.0,Top U2,ADPD4200,WLCSP-36,15.2000,8.4000,0.0,Bottom U3,AD5940,WLCSP-56,8.1000,10.2000,270.0,Top D1,760nm LED,0603,16.5000,8.4000,180.0,Bottom bom: Designator,Quantity,Value,Footprint,Manufacturer Part Number,Description U1,1,nRF5340,aQFN-94,nRF5340-CLAA-R,Dual-Core BLE Microcontroller U2,1,ADPD4200,WLCSP-36,ADPD4200BCBZR7,Multimodal Optical AFE U3,1,AD5940,WLCSP-56,AD5940BCBZ-RL7,Bioimpedance AFE (Hydration) U4,1,CALERA,SMD-Module,gSKIN-CALERA,Heat Flux Core Temp Sensor U5,1,BMI270,LGA-14,BMI270,6-Axis IMU (Motion/Steps) U6,1,MAX20303,WLP-56,MAX20303BEWN+T,Wearable Power Management IC U7,1,W25Q128,WSON-8,W25Q128JVSNIQ,128Mb Flash Memory ANT1,1,2.4GHz Ant,12...
...11 b/g/n) on an ESP32 module — a pre-certified module preferred (e.g. ESP32-WROOM / WROVER or equivalent; final selection yours, with justification) Antenna: / IPEX connector for an external antenna, and optionally a footprint for a PCB/chip antenna — to be decided during the concept phase Properly engineered RF path: 50 Ω impedance matching, keep-outs, RF-appropriate stackup 2.4 Main microcontroller STM32 family — specific part selected and justified by you Requirements: at least 2 CAN FD controllers (FDCAN or equivalent), −40…+85 °C minimum (+105 °C grade preferred), good supply availability and long lifecycle (10 years minimum), package suitable for automated assembly SWD debug interface brought out to a connector or test pads Non-...
We are seeking an experienced firmware developer with expertise in Texas Instruments (TI) development environments. The ideal candidate should possess a deep understanding of microcontroller architecture, debugging skills, and integration of communication protocols, as well as knowledge in power electronics. Key Responsibilities: • Develop and debug firmware for microcontrollers in the TI environment. • Integrate communication protocols efficiently. • Collaborate on power electronics-related firmware requirements. • Provide ongoing support and upgrades to the existing system software as needed. Ideal Candidate: • Proven experience with ARM Cortex-M3/M4 or other similar microcontrollers. • Excellent debugging skills and familiarity with tools such as K...
...controller. This daughter board will communicate with it over RS485 and locally control a conventional 230 VAC ceiling fan using relay-switched capacitors. Target PCB size: 33 mm × 33 mm, 2-layer The designer is responsible for schematic design, component verification, PCB layout/routing, firmware, ERC/DRC and manufacturing files. Main Hardware Preferred architecture: * ATtiny1614 local microcontroller * UPDI programming interface * 24 V DC input * 24 V to 3.3 V buck converter, preferably LMR51610 or verified equivalent * SP3485 or equivalent 3.3 V RS485 transceiver * RS485 protection and selectable 120 ohm termination * 4 × Panasonic APAN3124, 24 V relays * Individual MOSFET relay drivers and flyback diodes * External Norisys 8-speed rotary knob input * 230 VAC...
...requirements: Multiple relay outputs, industrial-grade, rated for reliable long-term switching of pumps, motorized valves, and actuators On-site interface: Integrated LED/LCD display showing device status, communication status, sensor readings, alarms, relay status, and diagnostics Enclosure: Powder-coated MS sheet, IP65-rated, suitable for outdoor/field deployment Scope of work: Recommend the right microcontroller architecture to support the above (Modbus, LoRa, GSM/4G, analog input) — open to your recommendation on chip/module selection Full schematic and PCB design (KiCad or Altium — editable format required) Well-commented firmware covering automatic control logic, manual override, Modbus communication, LoRa receiver handling, and GSM/4G cloud connectivity Wiring ...
...continuous monitoring so I can see where the laser head is at any moment and receive automatic alerts if something drifts out of spec or a component misbehaves. Ideally, the receiver will take positioning data straight from the board, process it with minimal latency, and expose a simple interface—serial, USB, or another protocol you recommend—so the data can be displayed live on a host PC or microcontroller dashboard. Reliability is critical, so built-in error detection should cover signal integrity, unexpected motion, and any other obvious fault conditions you identify during development. Deliverables I’m expecting: • Hardware design (schematic and BOM) for the receiver • Firmware or embedded code that handles positioning feeds, real-time monitori...
...the NFM transmission, recovering the baseband signal, and demodulating the **AFSK/FSK data used by SAME (Specific Area Message Encoding)**. The module shall cover the complete signal chain: **Antenna/RF Input → RF Filtering → VHF Receiver → NFM Demodulation → Baseband Conditioning → AFSK/FSK Demodulation → Digital DATA_OUT** The final output shall be ready for connection to an external microcontroller that will implement the SAME protocol decoder. Implementation of the complete SAME message parser and earthquake alert logic is outside the scope of this development. --- ## 2. RF REQUIREMENTS ### 2.1 Frequency Primary operating frequency: **162.425 MHz** The design should preferably support software/configuration-based tuning across: **162.4...
...4 V** → Charger OFF → 9 V adapter disconnected again The system should then remain OFF until the battery falls back to **7.2 V**. In other words: **7.2 V → ON → 8.4 V → OFF → 7.2 V → ON** This requires proper **voltage hysteresis**. ## Circuit Requirements I would like a **hardware-only solution**, preferably using: * Voltage comparator with hysteresis * MOSFET-based switching * No microcontroller * Low standby/battery consumption * Proper protection against backfeeding * Stable operation without rapid ON/OFF oscillation * Reliable switching of the **9 V / 1.5 A adapter** * Proper gate drive for the MOSFET * Appropriate filtering/decoupling The design should be suitable for **real hardware production**, not just a theoretical simulation....
I'm seeking an experienced circuit designer to create a digital control system for a Bi Color LED Matrix. The core component of this system will be a microcontroller that can add good sound quality designed by software in which each LED will have a sound frequency. Key Requirements: - Design of an LED Matrix of 25 columns and 6 rows - Integration of a microcontroller and some quality sound. - Application focused bluetooth control systems iphone and android Ideal Skills and Experience: - Expertise in digital circuit design - Proficiency with microcontrollers - Experience in control systems for bluetooth iphone , android applications. Please provide examples of similar work.
IoT Cloud Solution Requirement We have developed a custom PCB-based IoT device consisting of an ESP32 microcontroller, an EC200 GSM (4G) module, an SCD30 sensor for measuring CO₂, temperature, and humidity, and a 5-inch display that shows these sensor readings in real time. We require a complete cloud-based IoT solution for approximately 100 deployed devices. Each device should securely transmit its sensor data to the cloud over the GSM network. The cloud platform should store the data, provide APIs for a mobile application, and support a Grafana dashboard for real-time monitoring and historical analysis. The solution should include secure device communication (MQTT or HTTPS), cloud data storage, user authentication, device management, real-time dashboards, historical reports, al...
I need a compact, production-ready PCB that accepts a single DC input and delivers three regulated rails—24 V @ 12 A, 12 V @ 12 A and 5 V @ 10 A—for an industrial-automation control panel. The board must keep those rails alive for roughly 5-10 minutes by automatically switching to a lithium-ion battery pack whenever the main supply drops. An onboard 8051 microcontroller will continuously sense input power, drive status LEDs and, when a brown-out is detected, shut the rails down in a defined sequence after the battery grace period. I will flash the MCU here, so please include well-commented source, compiled HEX and a simple serial or GPIO interface for configuration. Electrical safeguards are critical in the factory environment, so integrate robust overcurrent, over...
...has hardware/electronics building experience. We're looking for a freelancer who can act as a hands-on mentor for the hardware and coding side, not just a builder — someone who will walk us through each step and explain it, since we're complete beginners in this specific area. Phase 1 scope (this posting): Guide us through wiring a basic glove prototype: flex sensors + IMU connected to a microcontroller (Arduino/ESP32 or your recommendation) Get the hardware reading clean, reliable sensor data Basic coding to turn that raw data into recognised output for a small set of signs (a handful of Arabic Sign Language letters/words as a starting vocabulary) Teach us why each step works as we go What we're looking for: Electrical/embedded systems engineer experienc...
...on final materials—metal, plastic, or a hybrid—so long as the finishing feels premium and stands up to daily use. While the patent text outlines baseline behaviour, I’m willing to explore value-adding features such as fingerprint recognition, keypad or app-based remote access if they can be delivered within a single prototype iteration. I’m relying on your experience to recommend the best microcontroller, sensors, and power strategy to keep the lock compact yet secure. Deliverables • Complete mechanical CAD of the lock body and internal mounts • Production-ready PCB layout, Gerber files, and BOM • Firmware source code with inline documentation • Assembled, fully functioning prototype shipped to me • Short video demo and a...
I have a new consumer-electronics concept ready for its first hardware iteration and I need a clean, production-ready PCB schematic drawn up as fast as possible. The board will bring together a main microcontroller, several peripheral sensors and a dedicated power-management section, so the schematic must clearly show all signal, data and power lines with proper decoupling and protection. You’re free to work in Altium, KiCad or another mainstream EDA package—what matters most is that I receive editable source files along with standard manufacturing outputs. Please design with component availability in mind and follow good EMC practices; this project is headed straight into a quick prototype run, so a tidy BOM and logical part choices are critical. Deliverables • E...
Looking for an expert Hardware & RF Layout Engineer to design a single, ultra-low-power, multi-radio handheld communication device. The entire project must be designed natively in KiCad (v7 or v8). The final deliverables must include complete native KiCad source files and automated SMT production exports. All primary ICs, modules, and antennas have already been finalized and ...device. The entire project must be designed natively in KiCad (v7 or v8). The final deliverables must include complete native KiCad source files and automated SMT production exports. All primary ICs, modules, and antennas have already been finalized and sourced from Mouser. No high-speed DDR memory routing or complex Linux HDI microvias are required for this project. The design uses an all-microcontroller...
I’m developing a microcontroller-based embedded system that will sit inside a vehicle (horn-relay) and act as the central hub for sensor integration and data acquisition. The core of the job is full-cycle design and development: selecting the right MCU family, creating the schematic and PCB layout, writing the firmware, and validating that the board reliably collects, timestamps, and streams data from the relay connectivity Hands-on experience in both embedded C/C++ and practical electrical or automotive environments is essential because the design must stand up to temperature, vibration, and EMI constraints found in vehicles. Familiarity with CAN, LIN, or similar in-vehicle networks is a plus; the final board will need to forward selected sensor packets to the main ECU. Del...
...occasional hose-down while still offering stable read range and low error rates. At this stage I am open about the operating band—LF, HF, or UHF—so long as we can balance range, power consumption, and tag cost. I expect us to discuss the trade-offs early and lock the decision in before PCB layout begins. Here is how I see the work flowing: • Electronic design—from antenna matching through to the microcontroller or SoC that will parse tag IDs and forward them over a simple UART, USB, or Ethernet interface. • Firmware—clean, documented C/C++ code (Arduino, ESP-IDF, or a bare-metal toolchain is fine) that wakes the reader, captures the tag UID, applies basic error checking, and pushes the data upstream. • Weather-resistant enclosure&mdas...
...detects an unsafe situation. The alert must be sent over GSM as an SMS that includes live coordinates so a caregiver can locate the user immediately. Here is what I need from you: • Complete, well-commented Arduino code that integrates a GPS module for continuous position updates and a GSM module for outbound SMS alerts. • Circuit schematic (Fritzing or similar) showing all connections—microcontroller, GPS, GSM, power regulation, and tactile buttons/buzzers. • A concise bill of materials with part numbers that are easily sourced online. • Step-by-step setup instructions so I can reproduce the build and test it on a real stick. Acceptance criteria 1. The serial monitor shows latitude/longitude refreshed at least once every 5 s. 2. Pressing t...
Project Title: Custom ESP8266 MCU PCB Design (LoRa, Current Monitor, RTC, Auto-Switching Battery, USB-C) Project Overview: I need an experienced PCB designer to design the schematic, route the board, and generate manufacturing files. Hardware & Schematic Requirements: • Microcontroller: ESP8266 (e.g., ESP-12F bare module footprint). • Programming & Debugging (USB-C): o Onboard USB-C port for programming only. Power comes from primary buck converter. o Integrated USB-to-UART bridge IC (e.g., CH340C, CP2102, or similar). o Standard NodeMCU-style auto-reset circuitry (two NPN transistors connected to DTR/RTS) to allow seamless, one-click flashing from the IDE without requiring physical boot/reset buttons. • Specific Pin Mapping (STRICT REQUIREMENT): o D0 (GPIO16)...
...batteries, with a low-battery warning pushed to the app. • Basic tamper detection (case opened or forced rotation) should trigger an alert in the app. What I expect to receive 1. Functional hardware prototype: motor drive, PCB, enclosure (3-D printed is fine for now), power system and any required sensors. 2. Firmware source code, well commented, ready for compilation on the chosen microcontroller (ESP32, nRF52 or similar). 3. A simple, clean mobile app (native or cross-platform) that pairs with the lock, shows status, and performs lock / unlock commands. 4. Circuit schematics, parts list, and mechanical drawings so I can move toward small-batch manufacturing after validation. 5. 5 copies of working prototype. I’ll be available to clarify door measurement...
...sensing kit for my PhD research. The system will be used to collect synchronized household energy, water, environmental, and occupancy data from multiple homes for AI model development. The kit should include: Energy monitoring (voltage, current, power, and energy consumption) Water flow measurement Temperature and humidity sensing Occupancy detection (PIR or equivalent) ESP32 (or similar) microcontroller with LoRaWAN communication Portable enclosure with quick-connect terminals for easy installation and removal between households LoRaWAN gateway integration Data transmission to a cloud/database (PostgreSQL, InfluxDB, or similar) Data export in CSV/API format for Python-based AI analysis The emphasis is on reliable, synchronized, research-grade time-series data, not on developin...
I am looking for an experienced automotive electronics engineer to design a production-ready controller PCB based on an STM32H7 microcontroller. This is a complete hardware design from scratch, including schematic design, PCB layout, component selection, automotive power protection and validation firmware. The controller will be used inside vehicles and must be designed for reliable operation in a harsh automotive electrical environment. It is not a hobby or basic development-board project. The enclosure and connector family are already selected. The final PCB must fit the provided Cinch automotive enclosure and connector arrangement. Main hardware requirements STM32H74x or suitable STM32H7 MCU Genuine dual-bank internal flash for safe A/B firmware updates Two native STM32 CAN F...
...device. The entire project must be designed natively in KiCad (v7 or v8). The final deliverables must include complete native KiCad source files and automated SMT production exports. All primary ICs, modules, and antennas have already been finalized and sourced from Mouser. No high-speed DDR memory routing or complex Linux HDI microvias are required for this project. The design uses an all-microcontroller architecture. ________________________________________ Core Components & Subsystems to Integrate Your design will tie the following components into a unified, functional schematic and layout: 1. Host MCU (The Brain): o STM32L4S7VIT6 (Ultra-low-power Arm Cortex-M4 MCU, 120 MHz, 2MB Flash, LQFP-100 package). Will act as the primary SPI/UART/I2C host controller. 2. NFC / Proxim...
Pcb designing and microcontroller coding
I’m building my project around an STM32 microcontroller but haven’t yet set up a development environment or written any firmware. I need an embedded-systems specialist who can guide me from first tool installation right through to a working, tested application. We’ll begin by choosing and configuring the toolchain—whether that ends up being STM32CubeIDE, Keil uVision, Atollic TrueSTUDIO, or another option you recommend—then move on to writing and debugging the firmware itself. The exact feature set (peripherals, real-time tasks, low-power modes, and so on) is still flexible, so I’ll lean on your expertise to shape the most reliable architecture for the board. Deliverables I expect: • A clean, well-commented firmware project for my STM32 &...
I am moving forward with a dedicated women-safety smartwatch and need a specialist who can turn the concept into a working prototype. The core capabilitie...in hand I should be able to: • Press a single button and have the SOS alert, live location, and audio-video feed sent automatically. • View the wearer’s position on a companion mobile or web interface. • Receive basic vitals (heart rate, steps, etc.) without noticeable battery drain. • Place an immediate call to pre-set emergency numbers directly from the watch. Please outline the microcontroller or SoC you’d suggest, the sensor stack, and any licensing needs for embedded software. If you have previous PCB layouts or enclosure designs that demonstrate similar integrations, feel free to re...
I’m building an industrial control system that brings an ARM Cortex-M microcontroller together with a Xilinx FPGA and a companion DSP on a compact, high-reliability multilayer board. The design calls for careful layer stack-up, controlled-impedance routing for high-speed buses between the MCU, FPGA and memory, as well as robust isolation and filtering for noisy factory environments. I already have a block diagram and rough pin assignments; what I need now is a complete hardware package that takes the concept all the way to production-ready files. — 6- to 10-layer schematic and PCB layout, including power architecture, differential pairs and test-point strategy — Verified design rules for 4 mil traces / 8 mil vias (or tighter if you can justify it) — Fab...
...from and now need the electronics and software ecosystem that turns them into a re-configurable display wall. Think 3 × 3, 4 × 4, 5 × 5, 6 × 6—or even larger—matrices where each module clicks together, powers up, and appears as one continuous canvas. Hardware • Design a compact PCB for each display that carries its own driver, power conditioning and a Wi-Fi-enabled microcontroller so every tile can auto-discover its neighbours. • Provide an edge connector or other simple bus so power and data can daisy-chain when the tiles are slotted into a frame. • Supply full schematics, BOM and Gerber files, plus a reference back-plane/controller if you feel a master node will simplify things. Production ready from Firmware •...
