Inbyggda system Jobs

I’m building a converter that mirrors the behaviour of LeechCore, letting a physical PCIe device carry out high-speed DMA into or out of a KVM/QEMU guest while the host keeps full control. The job is to design and code the complete data-path: a small Linux kernel module (or VFIO extension) that exposes the device’s BARs, plus the matching QEMU patch or user-space helper that maps those DMA buffers safely into the virtual machine. You will decide the cleanest architecture, write the low-level C code, and supply a working proof-of-concept on an up-to-date kernel/QEMU stack. I expect well-commented source in a Git repo, clear build scripts, and a short demo showing a guest performing DMA transfers without crashing or corrupting memory. Deliverables - Kernel-side driver or VFIO...

The latest spin of my automotive-grade sensor board works, but a few components have shown reliability issues in the field. I need a hardware engineer to review the current BOM, swap out the failing parts, route the new board, and verify the board is sound again. Targeted components 1. Connectors. 2. Diodes. 3. Oscillators. Details will follow. Acceptance A revised project archive (schematic, PCB, updated BOM) and a confirmation that the new connectors, diodes, and oscillators perform within spec. The freelancer should be open to conduct voice and/or video calls.

# Compact 12S BMS / Active Balancing Board — Ready-Made or PCB Design We are developing a **12S drone battery system** We are looking for someone who already has a **compact 12S BMS design or board** suitable for a high-performance drone application. ### Required specifications * **12S Li-ion / LiPo** * Target PCB size: **maximum 50 × 60 mm** * **Active cell balancing** required * Individual monitoring of all 12 cells * Over-charge / cell over-voltage protection * Over-discharge / cell under-voltage protection * Over-current protection * Short-circuit protection * Over-temperature / under-temperature protection * Individual cell voltage monitoring * Pack voltage and current monitoring * **CAN / CAN-FD communication** * SOC monitoring * Battery fault/status reporting * Comp...

I am looking for an electronics engineer to design a 250 kw off grid solar inverter circuit, for a new product launch.

我正在为 SN7037 系列单片机准备量产，现阶段需要一套完整、可复制的固件烧录方案，用于在产线快速、稳定地写入与校验程序。 任务范围 • 目标仅限固件烧录（单片机级别），不涉及电路板或芯片封装改动。 • 提供一条从 PC 端到烧录治具/下载线的全链路解决方案，支持批量烧录、自动校验与失败重试。 • 协议或接口可灵活采用（UART、SWD、USB 等皆可），以实际效率和可靠性为准。 • 交付包含可执行烧录工具、脚本或 GUI，配套驱动与详细使用文档；如需定制 Bootloader，请同时交付源代码。 验收标准 1. 在连续 50 片以上实物测试中，写入-校验成功率达到 100%。 2. 烧录总时长、通信波特率及校验方式等关键参数在报告中列明，可复现。 3. 所有工具与代码无加密锁，可二次使用与维护。 如你已掌握 SN7037 或类似 8051 内核 MCU 的烧录经验，请直接说明可行技术路径、预计周期，以及需我方配合的具体信息（原理图、Firmware .bin 等）。期待与你高效对接，把这条烧录流程一次性打磨到位。

I need an embedded-software specialist who can take my collection of Wi-Fi and LoRaWAN gateways and assorted sensors and knit them into a single, production-ready IoT platform. The job covers the full stack from firmware that runs on the edge devices through to the application layer that users will see. Core capabilities the platform must deliver: • Data collection from every gateway and sensor • Robust device management (on-boarding, remote configuration, OTA updates) • Built-in analytics so I can visualise trends and run simple rules without exporting data elsewhere You’ll be free to recommend languages, embedded RTOS options, and cloud back-ends, provided they reliably handle both Wi-Fi and LoRaWAN traffic and scale cleanly as more hardware is added. De...

I'm looking for an experienced professional to assist with the electronics and circuitry of a CAD drone project. Key tasks include: - Designing and integrating electronic systems, specifically for motors and propellers. - Collaborating to ensure efficient power distribution and system functionality Ideal candidates should have: - Proven experience in drone electronics - In-depth knowledge of motors, propellers, and circuitry - Strong problem-solving skills - Ability to work collaboratively and communicate effectively Please include relevant experience in your application.

I’m working with a Diode Laser Board and I need a custom receiver that can plug into that setup, track the machine’s positioning in real time, and instantly flag any faults it detects. The idea is to have 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 id...

Estoy buscando un socio técnico para colaborar en un sistema de ciberseguridad patentado, SISTEMA DE DETECCIÓN Y CONTENCIÓN AUTÓNOMA DE MOVIMIENTO LATERAL (ALC-FL), desarrollado con IA y basado en 23 reivindicaciones de la patente registrada en República Dominicana. El código, creado junto a un ingeniero en Canadá, está escrito en Rust y listo para compilarse como MVP. Entre sus características destacan: - Cierre de ventanas laterales en 0.01 segundos. - Eliminación de falsos positivos. - Mejora del rendimiento del CPU y reducción de temperatura del chip. - Limpieza del 80% del ruido o información no válida. Estoy interesado en asociarme con alguien que pueda analizar, compilar, ofuscar y empaqueta...

Job Title: Experienced Hardware Engineer – Custom Embedded Linux IoT/Controller Hardware (Prototype) We are looking for an experienced Hardware & PCB Engineer to design a prototype expansion module/accessory for an interactive game controller environment. The device will be a high-performance, ultra-low-power embedded board featuring wireless connectivity (Bluetooth & Wi-Fi) and a 6-axis Accelerometer/Gyroscope (IMU) motion-tracking sensor suite. The target architecture is based on an Embedded Linux platform (ARM/SoC/SoM) with a heavy engineering focus on battery power optimization and custom power management circuits. Your main responsibility will be board-level schematic design, multi-layer PCB layout, component selection, and preparing production-ready manufacturing files ...

Objective: The goal is to design and develop functional prototype AFE(Analog Front End)/pulser-receiver system that can directly interface with any raw underwater transducer (200KHz to 1MHz) and deliver full echo-profile data to a Raspberry Pi. Description: I am looking for an experienced analog electronics / ultrasonic / sonar engineer to design and develop (physical device) a custom electronics board (AFE) to interface with a raw underwater ultrasonic transducer. The board will interface directly with a raw piezoelectric ultrasonic transducer and provide the complete transmit and receive signal chain. The transducer we are using is: The basic architecture is: Piezoelectric Ultrasonic Transducer ↔ TX/RX Front End ↔ ADC ↔ Raspberry Pi / Processor Required Electronics The...

I'm looking for a skilled developer to create a robot arm controlled by hand gestures. The arm's movement will be facilitated using Arduino, gyro sensors, and flex sensors. Key Requirements: - Wired control mechanism - Moderate precision and responsiveness - Primary build material: cardboard The system should involve: - Gyro sensors to detect hand rotation for base and shoulder movement. - Flex sensors to detect finger bending for elbow and gripper movements. - Arduino to process signals and control 4 servos. Ideal Skills and Experience: - Proficiency in Arduino programming - Experience with gyro and flex sensors - Background in robotics and servo control - Strong problem-solving skills - Ability to work with cardboard and design functional prototypes Looking forward to your...

Hallo, ich suche einen erfahrenen Entwickler für ein privates Fahrzeugprojekt. Ich möchte für einen Buggy eine komplett eigene elektronische Fahrzeugsteuerung entwickeln und suche jemanden, der die Software dafür professionell umsetzen kann. Vorhandene/geplante Hardware: * Raspberry Pi als zentrale Einheit * 5× STM32G474 als dezentrale Controller * CAN/CAN-FD-Netzwerk * USB-CAN-Adapter am Raspberry Pi * OBD/CAN-Anbindung * verschiedene Sensoren * High-Side-Treiber für Ausgänge * 2 Displays Geplante Funktionen: * moderner digitaler Tacho * Drehzahl-, Tank-, Temperatur- und Spannungsanzeige * Sensorübersicht * Fahrzeugstatus * Lichtsteuerung * Blinker * Lüftersteuerung * Windensteuerung * Diagnose und Fehlercodes * Warnmeldungen * Datenlogg...

AI-Controlled XYZ Writing Plotter + Camera System Project Goal I am looking for a developer to build a reliable, plug-and-play system that allows an AI/LLM running on a Windows PC to control an XYZ writing/drawing plotter and view a tablet through a camera. The goal is for the plotter to use a capacitive stylus to physically interact with a tablet touchscreen. The system should be capable of: Tapping specific locations Swiping Selecting buttons/icons Typing using an on-screen keyboard The intended workflow is: User Command → AI/LLM → Camera Observation → Plotter Action → Camera Verification I should be able to give the AI a normal-language command. The AI should interpret the command, view the tablet, determine the necessary actions, physically perform those acti...

Looking for a low-level Linux/KVM/QEMU developer. I already handle the Ubuntu/Linux host, Windows VM, GPU passthrough and VFIO/IOMMU setup myself. I only need help building a LeechCore-style DMA converter/backend for my own lab VM. Project idea: PC2 client connects over LAN to the Linux host. The Linux host reads memory from my own KVM/QEMU test VM. The converter exposes a DMA-like read API for research and testing. Needed features: - read(address, size) - scatter read - memory map handling - caching / batching for speed - TCP client/server communication - speed test / benchmark mode - clean error handling - config file support Preferred backend: - LibVMI - LeechCore QEMU backend - QEMU/KVM memory introspection Required skills: - C/C++ or Rust - Linux low-level develo...

I'm seeking an experienced PLC programmer to develop a program for Automation Direct PLCs. The primary task of this program will be motor control, essential for our machine control operations. Key Requirements: - Expertise in Automation Direct PLCs - Proficient in motor control programming - Experience in industrial automation, specifically in machine control contexts Ideal Skills and Experience: - Strong background in PLC programming - Familiarity with Automation Direct software and hardware - Previous projects involving similar motor control tasks Please provide samples of related work and a brief outline of your approach. Looking forward to your bids!

I need a skilled programmer to develop product in (Mindmotion, HOLTEX). Key Requirements: - Program PIC microcontrollers - Ensure reliablity - Collaborate on system integration Ideal Skills: - Expertise in programming - Experience - Strong background in wireless communication systems

Chcę zamówić kompletny projekt urządzenia IoT opartego na ESP32, które będzie mierzyło ciśnienie w instalacji C.O., prezentowało dane na ekranie dotykowym oraz sterowało elektrozaworem. Ekran ma jednocześnie: • wyświetlać aktualne ciśnienie, • pozwalać na ręczne otwarcie / zamknięcie elektrozaworu. Poza tym potrzebuję, aby system zapewniał: • alarm w przypadku awarii (np. spadku lub wzrostu ciśnienia poza zadany próg), • zdalne monitorowanie przez aplikację Tuya, • archiwum odczytów dostępne w aplikacji i na wyświetlaczu. Zakres prac obejmuje: 1. Schemat elektryczny i projekt PCB z ESP32, czujnikiem ciśnienia, sterownikiem elektrozaworu oraz interfejsem do ekranu dotykowego. 2. Oprogramowanie firmware: obsługa czujnika, logika a...

Tengo un firmware para ESP32 escrito en C/C++ que ya funciona, pero requiere algunos retoques. Busco a alguien con probada experiencia en ESP32 y en programación C/C++ que pueda: • Revisar el código existente, localizar los puntos débiles y optimizar lo necesario. • Modificar las funciones de control que indicaré —son cambios pequeños pero precisos— sin alterar el resto de la lógica. • Incorporar los ajustes adicionales que entregaré al inicio y verificar, con pruebas reales sobre placa, que todo sigue estable. Entrego el proyecto actual y las instrucciones detalladas tan pronto comencemos. Es un trabajo sencillo, pensado para quien conozca bien el SDK de Espressif, FreeRTOS y el flujo de compilación...

ESP32 Robot Arm + Camera with AI Integration Project Type: Fixed Price Development Budget: $1,500–$2,500 USD Target Timeline: 3–6 weeks after receiving hardware Project Overview I am looking for an experienced ESP32/robotics developer to build a plug-and-play control system connecting: Pre-assembled Hiwonder XArm 1S robotic arm Seeed Studio ESP32-S3 Sense camera Windows 10/11 PC AI/LLM running on the PC The basic architecture is: User Instruction → AI/LLM → Windows PC Server/API → Robot Arm + Camera The AI should be able to receive natural-language instructions, request camera snapshots, analyze images, issue commands to the robot, and receive status/feedback. The intended workflow is: Observe → Decide → Act → Verify → Repeat The goa...

Busco apoyo experto para desarrollar un robot cortador de césped destinado a una cancha de fútbol profesional de césped natural. La meta es que la máquina funcione de forma totalmente autónoma, trace su propio recorrido mediante mapeo LIDAR y realice un corte helicoidal limpio y uniforme. Alcance principal • Diseño mecánico del chasis, transmisión y cabezal de cuchillas helicoidales, considerando pendientes, desniveles y la densidad del césped natural de alta competencia. • Arquitectura electrónica: selección de motores, baterías, drivers y sensores que garanticen potencia suficiente para una cancha completa sin recarga intermedia. • Sistema de navegación y mapeo: integraci&oacu...

Self-Solving Rubik's Cube Build Overview I'm looking for help building a self-solving Rubik's cube based on a project example I found online. I need the final product to be fully functional and nicely finished. Delivery of the finished product to the UK Scope of work - Build a self-solving Rubik's cube similar to the Smart3 project - Ensure the cube is fully functioning and nicely finished - Include replaceable or rechargeable battery feature References - See reference at Delivery format Physical delivery

Request for a Custom Pre-Configured CAN/CAN-FD Gateway for EV BMS Development and Testing I would like to request a quotation for a complete, standalone CAN/CAN-FD gateway system. I am looking for a device that can be connected between the vehicle and the OBD connector using an OBD interposer, and that can operate independently without a PC using pre-loaded configurations. The main purpose of the system is development and testing of battery/BMS CAN communication in electric vehicles. The vehicles I would like to support are: * Tesla Model 3 * Tesla Model Y * Kia e-Niro * Hyundai Kona Electric * Volkswagen ID.3 * Volkswagen ID.4 I will provide the exact model years for each vehicle at the beginning of the project. Required functionality * At least 2 independent CAN/CAN-FD channels *...

Quero centralizar todo o controle de cargas do meu veículo em um PDM simples, alimentado a 12 V, que use: • 8 relés ISO de 30 A • 2 relés mini de 20 A • Fusíveis individuais para cada saída O módulo precisará comandar motores, luzes e atuadores diversos, então a disposição das trilhas deve suportar picos de corrente contínua sem aquecimento excessivo e contemplar boa separação entre linhas de potência e sinais de acionamento. Já possuo um briefing com dimensões, referências de pinagem e alguns exemplos de projetos semelhantes; envio assim que iniciarmos para você tomar como base. Minha expectativa é receber: 1. Esquema elétrico co...

Design and build a three-phase, 50 V / 30 A SPWM inverter tailored for an induction motor. The work spans the complete hardware chain—schematic capture, PCB layout, power stage assembly, and gate-drive/protection circuits—plus the firmware that drives it. Either a PIC32 or STM32 can sit at the core; choose whichever lets you deliver stable, low-jitter PWM with minimal dead-time distortion. Firmware targets • Closed-loop speed control with a user-selectable frequency range of 0–250 Hz • Parameter entry and live monitoring over UART, USB, or CAN (pick one to keep the bill of materials lean) • Safe-start, over-current, and over-temperature trips baked into the interrupt flow Deliverables 1. Complete schematics (Altium, KiCad, or other mainstream CAD)...

I'm seeking an experienced PCB designer to create a Bluetooth-connected PCB for a fingerprint lock. This PCB will not only facilitate Bluetooth mobile connectivity but also serve as a remote control interface. Key Requirements: - Primary function: Bluetooth connectivity along with mobile connectivity - Remote control functionality for: - Locking and unlocking the fingerprint lock - Adding administrators - Adding clients Ideal Skills and Experience: - Proficiency in PCB design and Bluetooth integration - Experience with mobile connectivity modules - Knowledge in secure remote control systems - Familiarity with fingerprint module communication protocols and a related mobile application Please include relevant experience in your bids. Looking forward to your proposals!

Preciso desenvolver uma placa eletrônica que atue como módulo de distribuição de potência (PDM) para um novo protótipo automotivo. O foco é disponibilizar canais de acionamento de cargas de 12 V, protegidos por drivers adequados, e garantir comunicação plena pela rede CAN do veículo. O que espero receber: • Esquemático completo com componentes automotivos (drivers high-side/low-side, proteção contra inversão de polaridade, filtro EMC). • Layout da PCB em camadas apropriadas para ambientes veiculares, com trilhas dimensionadas para até 30 A nos canais principais. • Arquivos Gerber, BOM detalhada e arquivo de pick-and-place. • Firmware de demonstração simp...

Necesito un modelo funcional en TinkerCAD que represente una estación automatizada de control de nivel de tanque. El sistema debe: • Utilizar un sensor de presión para leer el nivel. • Activar un relevador que encienda una bomba (motor) cuando el nivel baje del umbral configurado. • Mostrar el estado mediante un LED RGB: rojo cuando la bomba está activa, azul cuando está inactiva y verde cuando el nivel se encuentra dentro del rango deseado (modo espera). Entrego el umbral inicial, pero quiero que quede documentado dónde ajustarlo en el código Arduino. El proyecto final debe incluir: 1. Esquema de cableado completo y limpio dentro de TinkerCAD. 2. Código Arduino claramente comentado. 3. Enlace público al c...

I’m building an industrial-grade robotic setup and need a sharp embedded-systems mind to move the control electronics from concept to reliable hardware-in-the-loop operation. The work centres on firmware that drives motors, interprets sensor data and communicates over CAN bus or OBD-II–style diagnostics. Most of the prototyping will happen on Arduino or ESP32 boards before we freeze the design onto a custom PCB, so familiarity with Altium Designer or KiCad for schematic capture and layout is essential. Here’s how I see the collaboration flowing: • Translate high-level motion requirements into C/C++ firmware with clean, well-commented code. • Select, integrate and tune motor drivers, encoders and safety interlocks so the robot meets industrial-speed repeatab...

4-Layer ESP32 Hardware Optimization, LTspice/ANSYS Thermal Simulation & Production PCB Package ******Project Budget is 30-60 USDS Best offer within this budget wins.******** IMPORTANT: NO PLACEHOLDER BIDS, Proposals starting with generic templates or placeholder quotes will be immediately declined and reported. To prove you have read and understood the entire project scope, your proposal MUST start with the exact phrase: HARDWARE-EXPERT Project Overview: We are seeking an expert Senior Embedded Hardware / PCB Design Engineer to finalize, simulate, optimize, and release a high-reliability, 4-layer ESP32-based industrial electronic system. This project demands strict adherence to engineering standards, component lifecycle management, galvanic isolation, and rigorous...

I'm seeking an experienced engineer to design a high voltage (HV) module. The module will convert 12V DC to 15kV with a current under 500 microamperes. Key Requirements: - Input: 12V DC - Output: 15kV - Current: Under 500µA - Voltage Regulation: Moderate precision - Form Factor: Custom size to fit specific industrial machinery Ideal Skills and Experience: - Expertise in high voltage design - Experience with voltage regulation techniques - Proficiency in custom electronics design - Background in industrial machinery applications Please provide samples of similar projects you've completed.

I have a Particle Boron and want it turned into a small proof-of-concept that watches two reed switches and a single split-core current transformer. Whenever either switch changes state or the CT reports a reading outside user-defined limits, the Boron should push an SMS straight to my phone. Please build the firmware, wire the sensors, and set up the cellular messaging so the text includes three key pieces of information whenever a condition is met: the live state of each reed switch, the measured current, and a timestamp noting when the limit was crossed. I also need your guidance in deciding the actual thresholds for both the switches and the current transformer, so factor parameter-setting into the workflow. A concise wiring diagram, commented source code ready for Device OS, and a q...

Assalam o alaikum, I am looking for Electrical & Electronics Engineers from PAKISTAN to be a part of my team and work on multiple tasks related to Circuit design, Embedded Systems, Control Systems, Power Systems etc. Applicants should have strong expertise in following softwares' Proteus Multisim TinkerCAD MATLAB/SIMULINK Applicants should have good expertise in writing short and long reports e.g. Final Year Project Reports. You should be well aware of Plagiarism Policies for writing technical documents.

I have a piezo-based wet/dry sensor concept that relies on tracking resonance changes in a PZT ceramic between 20 kHz and 500 kHz. When the tip is in air the vibration is high-Q with a large voltage swing; when any liquid covers it the amplitude drops, the Q-factor falls, and both phase and resonant frequency shift. I now need an electronics specialist who can turn this working principle into a repeatable, field-ready solution. The job covers selecting the drive topology, designing the analog front-end, and implementing a small digital section that continuously excites the ceramic, samples the returning signal, and decides “wet” or “dry” in real time. Accuracy, low noise, and robust thresholding against temperature or viscosity changes are essential. Delive...

I have a Particle Boron and want it turned into a small proof-of-concept that watches two reed switches and a single split-core current transformer. Whenever either switch changes state or the CT reports a reading outside user-defined limits, the Boron should push an SMS straight to my phone. Please build the firmware, wire the sensors, and set up the cellular messaging so the text includes three key pieces of information whenever a condition is met: the live state of each reed switch, the measured current, and a timestamp noting when the limit was crossed. I also need your guidance in deciding the actual thresholds for both the switches and the current transformer, so factor parameter-setting into the workflow. A concise wiring diagram, commented source code ready for Device OS, and a q...

I am building a free-space optical communications platform and need a complete pointing, acquisition, and tracking software package that can consistently maintain sub-degree alignment between my optical terminal and a remote node. Core expectations • Pointing accuracy: better than 0.5° under nominal environmental conditions; 100% uptime once locked. • Communications interface: native Ethernet/IP for command, telemetry, and reporting status. • Platform: x86/Linux preferred; however, I can compile on other POSIX systems if the code is portable. Your solution should include: 1. Real-time control loop that accepts attitude sensor data (e.g., IMU, encoders) and drives two-axis galvanometers and a MEMs array. 2. Acquisition logic capable of coarse scan, fine sc...

We are developing a Shabbat-compliant smart alert lamp designed for observant households in Israel. The system connects Tuya-compatible smart lamps/switches with real-time emergency alert data (Pikud HaOref / Red Alert API). During Shabbat, the lamp must visually alert users (via color changes or preset light patterns) without violating Halachic principles (no user intervention, automated triggers, silent visual alerts, and local state memory). היקף עבודה ותחומי אחריות (Key Responsibilities & Scope): Tuya IoT Platform Configuration: Set up the Cloud project on Tuya IoT Developer Platform. Define Product ID (PID) and Data Points (DPs) tailored for custom smart lighting/alert states. Real-time API Integration & Bridge: Build a lightweight, high-availability backend bridge that ...

# Custom PCB Design for Camera Smart Glasses I am looking for an experienced **embedded hardware/PCB designer or engineering firm** to design a complete PCB for camera-equipped smart glasses capable of **still photo capture and live video streaming**. ## SoC The designer can select the most suitable SoC from: * **Allwinner V821** * **Rockchip RV1103** * **Rockchip RV1106** Please recommend the best option based on **camera/MIPI support, power consumption, thermals, USB capabilities, software/SDK support, availability, and PCB complexity**. Reference designs that may be used include **LicheeRV Nano, Luckfox Pico Mini, and Avaota F2**. ## Core Requirements * Single onboard **Sony IMX or equivalent camera**, minimum 1080p * MIPI CSI-2 camera interface * Still photo capture + live vide...

Potrzebuję funkcjonalnego prototypu niewielkiego systemu, który bezprzewodowo poinformuje o obecności osoby w pomieszczeniu. Co musi zrobić urządzenie • Czujnik ruchu PIR, zasilany wyłącznie baterią, wykrywa obecność. • Wskaźnik LED przy drzwiach – również zasilany z baterii – automatycznie zmienia kolor, gdy czujnik coś wykryje lub gdy pomieszczenie znów jest puste. • Między elementami nie może być żadnego okablowania; komunikacja ma być w pełni bezprzewodowa. Kluczowe wymagania • Bardzo niski pobór energii – zależy mi na długiej pracy na jednym komplecie baterii. • Stabilna, odporna na zakłócenia łączność (BLE, Zigbee, Sub-GHz lub inne rozwiązanie, które zaproponujesz). • Kompaktowe wymi...

I’m bringing an MLX90614 infrared temperature sensor into an ESP32-based design and need a clean, ready-to-flash solution that covers three essentials: accurate temperature readings, an immediate on-screen display, and reliable data logging. The job breaks down into two parts. First, document the wiring so I can reproduce it quickly—pin map, I²C pull-ups, and power considerations for the 3 V rail. Second, supply well-commented Arduino-compatible code (ESP-IDF is fine if you prefer) that: • polls the MLX90614 at a reasonable interval • streams both object and ambient temperatures to the Serial Monitor (or an OLED/Nextion screen if you think that’s cleaner) • stores each reading with a time stamp to SPIFFS or a micro-SD card—your call, as l...

I have a junior engineer building the early schematics for an asset-intelligence prototype and I need an experienced embedded-systems specialist to guide the hardware design, write the firmware, and get the first units reliably streaming data to the cloud. The boards must interface with temperature, pressure and motion and more sensors, carry out real-time analysis, perform basic filtering, then aggregate and compress the packets before they leave the device. Security on the wire is non-negotiable, so please be comfortable implementing encrypted transport and key management on resource-constrained MCUs. You will collaborate directly with us on: • Selecting the optimal MCU / wireless stack and finalising the schematic • Integrating the three sensor types and validating their ...

I need a complete DELTA PLC program that drives an automated motor-control setup. The job is centred on two core functions—precise speed regulation and repeatable position control—so the logic must switch cleanly between the two operating modes and hold accuracy under changing loads. All field devices and the PLC hardware are already wired and live; what is missing is the ladder/structured-text code, parameter mapping and a short commissioning guide so I can load, test and fine-tune on site. Please incorporate any standard DELTA libraries you normally use, make all tags and rungs easy to read, and add inline comments so future tweaks stay simple. Deliverables: • Finished DELTA PLC program file • Brief documentation showing I/O map, parameter blocks and step-by-ste...

I already have the basic LoRa modules on hand and now need a complete solution that turns them into a smart lamp I can manage from a browser. The lamp must offer smooth dimming, full-spectrum colour change and the ability to follow a user-defined schedule. Through the web app I want three distinct control modes: • a real-time dashboard where sliders and colour pickers immediately push changes over LoRa, • optional voice commands (Web Speech API or similar) for hands-free operation, • and a panel of quick “predefined settings” such as reading, relax or wake-up scenes. Please handle both the embedded side (firmware for the LoRa node driving the LEDs) and the front-end/back-end that serves the browser interface. I’m comfortable hosting on a small VPS...

I’m building a compact board whose sole mission is clean, reliable power distribution. I already have the system requirements mapped out at a high level; now I need an experienced PCB and embedded engineer who can turn those requirements into production-ready hardware and firmware. The job covers the full design flow: capturing the schematic, creating the PCB layout with attention to thermal paths and EMI, selecting components for efficiency and availability, and writing the embedded code that supervises voltage rails, fault flags, and soft-start logic. I expect good engineering practices—proper net-naming, clear documentation, and design files that open without issue in KiCad or Altium. Deliverables • Complete schematic (PDF + source) • PCB layout files and Gerbe...

I need robust, well-documented firmware that lets an ESP8266 on the Arduino platform both send and receive infrared commands for multiple air-conditioner remotes. Serial command-line interaction over USB or Telnet is all that’s required; no web or mobile interface is necessary. Core tasks • Build or adapt an Arduino-compatible sketch that scans incoming IR frames, decodes them, and logs the raw timing as well as the decoded protocol and data. • Implement a complementary routine that allows me to replay captured frames or craft new ones from the command line, then transmit them through an IR LED with correct carrier frequency and timing precision. • Structure the code so adding or tweaking protocols is straightforward—I will be experimenting with a variet...

need a DDR4 PCB layout designer. The job covers the full physical layout, tuned for high-speed signal using Mentor tool PADS PCB.

I need a full EasyEDA project—schematic and routed PCB—for a tiny Atmega32U4 board that lets a computer drive a single external LED through a 3-pin XH-JST connector (GND / 5 V / LED). The board must talk and be programmable over a horizontal USB-C port and should remain as small as practical without sacrificing good layout practice. Core requirements • EasyEDA schematic using the Atmega32U4, including crystal or resonator, USB-C E-Markers (where needed), ESD protection, boot-cap circuitry and the standard reset network. • Break-out to one XH-JST-3 plug clearly silkscreened with the GND, +5 V and LED symbols. • Primary power supplied by USB-C 5 V rail. • Firmware that gives basic functionality: detect USB power, expose the MCU as a simple USB HID to ...

We are seeking experienced Validation Automation Engineers to develop and maintain automated testing frameworks that ensure software and product reliability. The ideal candidate will have strong experience in automation development, validation processes, and quality engineering. The role involves creating automated test scripts using technologies such as Python, C++, PyTest, Robot Framework, or similar tools. Responsibilities include executing validation test cases, analyzing failures, maintaining automation suites, identifying defects, and collaborating with engineering teams to improve product quality. Experienced candidates should have the ability to design enterprise-level automation frameworks, integrate testing into CI/CD pipelines, perform hardware and software validation, deb...

I need an electrical engineer to build a working prototype for a cooling and heating system. The prototype requires microcontrollers and sensors. Ideal Skills and Experience: - Expertise in circuit design - Experience with microcontrollers and sensor integration - Background in developing heating and cooling control systems - Ability to build and test prototypes Please provide examples of similar work and relevant qualifications.