Embedded Systems Jobs

Freelancer Required – SAW Welding Controller Development We are looking for an experienced Embedded Systems / PCB Design Engineer to develop a dedicated controller PCB for an SAW (Submerged Arc Welding) machine. The welding control logic has already been developed and tested on an Arduino development board. We now want to convert the existing prototype into a reliable, compact and industrial-grade controller PCB. Scope of Work * Review existing Arduino code and logic * Convert Arduino-based control logic to a suitable MCU platform such as STM32 * Design complete circuit schematic * Design industrial-grade PCB * 24 VDC industrial input/output * Isolated digital inputs and protected digital outputs * Analog inputs for welding voltage/current feedback * Welding voltage sensing with ...

I need an experienced electrical or electronics engineer to custom design and build a working prototype of a compact, self-sustaining, solar-powered LED lighting system.” “The system should use a round solar panel around8 to 10 inches in diameter – smaller if feasible– a rechargeable battery, charge control, and efficient LED lighting. The LED load is expected to be a 24-inch, 12-volt LED strip drawing roughly5 to 8 watts. The system must switch on automatically at dusk and off at dawn, and reliably power the LEDs for at least 10 to 11 hours per night under normal conditions.” “Components should be weather-resistant, targeting something like IP67 or 68.” “Please answer the following in your proposal: Have you designed similar solar or battery...

We are Safe Instrumentación (Bogotá, Colombia). We design a modular data-acquisition system for geotechnical and industrial instrumentation, with four boards: a main "Brain" (STM32G0B1RE, FRAM, LoRa, LTE modem, RS-485, native USB) and three accessory nodes (vibrating-wire VM501C, inclination SCL3400, and a DS18B20 temperature chain of up to 200 sensors). We already have a working prototype. We do NOT need firmware — we develop it ourselves. We need a senior engineer (or firm) to take the hardware to production: Review and optimize the existing schematics Verify and strengthen protections (ESD, surge, EFT; galvanic isolation on RS-485; reverse-polarity/overcurrent) Optimize power management and consumption (seamless mains/battery switching, low-power modes, l...

I need a compact, production-ready PCB that brings together an ARM Cortex MCU with a temperature sensor, 3-axis accelerometer, optical heart-rate monitor, microphone, speaker and on-board flash. The board must seamlessly switch between battery operation and USB power, with integrated charging and safe power-path management so firmware updates and debugging over USB remain possible even while the battery tops up. Please handle the complete hardware flow: • Schematic capture • PCB layout with good analog isolation for the heart-rate front end • Clean breakout for the mic and speaker audio paths • EMI-conscious routing for the high-speed flash bus • Gerber files, drill data, pick-and-place and a curated BOM from mainstream suppliers I will review the design...

I'm seeking an experienced hardware designer to create a compact TPMS (Tire Pressure Monitoring System) chip that monitors both pressure and temperature for motorcycles. Key Requirements: - Monitor both tire pressure and temperature - Designed specifically for motorcycles - Should be compact Ideal Skills and Experience: - Expertise in chip design, specifically for monitoring systems - Experience with motorcycle electronics - Ability to design compact, efficient hardware Looking for someone with a proven track record in similar projects.

I’m putting together a small, stand-alone digital hygrometer that simply shows real-time temperature and relative humidity on an LCD. No Bluetooth, Wi-Fi, or data-logging complexity is required—just accurate sensing, a clear screen, and reliable operation. Here is the essence of what I need: • Accurate temperature and humidity sensing (±0.5 °C / ±3 % RH or better is ideal). • An easy-to-read, low-power LCD that presents both values at a glance. • Clean firmware that boots quickly and updates readings at a sensible interval without flicker. • A compact electronics design I can send straight to fabrication: schematic, PCB files, BOM, and a brief assembly/testing guide. If you have a preferred sensor family (SHT3x, BME280, DHT series, ...

I want to automate the filling of an overhead storage tank with a compact microcontroller-based solution. The unit should sense the water level in the tank, trigger the pump when the level drops below a defined threshold, and shut the pump off once the tank is full. I am using a standard overhead tank fed by a single pump from ground level. You’re free to recommend the most reliable sensing method—, or conductive—so long as it performs accurately in typical domestic water conditions and can be serviced easily if something fails. The design must include: • A microcontroller (Arduino, ESP32, or comparable) with clearly commented firmware. • A driver stage capable of switching a 1 HP single-phase pump safely. • Manual override for both pump ON and OFF. ...

I'm looking for a skilled developer to build a lighting MIDI fader console with USB integration. The console will primarily be used on Windows. Key Requirements: - User Interface: Physical knobs and faders - USB Integration: Must support Windows - Features: - Programmable buttons - Mappable controls Ideal Skills and Experience: - Experience with MIDI hardware and software - Proficiency in USB integration for Windows - Knowledge of physical interface design with knobs and faders - Ability to implement programmable and mappable controls **EXPERIENCE WITH ARTNET A PLUS FOR FUTURE PROJECTS** Please provide samples of previous work related to MIDI or hardware integration. We are an American Manufacturing Company looking to replace our lead designer. Must have Cad and Programmi...

I am taking a grad class of computer architecture and I need someone who has experience in computer architecture, logic gates and knows how to code in C/C++ or who has a master degree in computer engineering who can do my homework assignments for the semester. This is an overview of the class: it covers the major design aspects and building blocks that go into designing modern computers. We’ll start by learning what an instruction set architecture (ISA) is, and then, using MIPS as an example, understand how they’re implemented with common ISA design tradeoffs. Next, we’ll get into microprocessor design. Starting with a single-stage machine, this class will introduce how the MIPS instruction set can be implemented. Using this implementation as a baseline many advanced perf...

Description I need one physical prototype assembled from a complete, tested design. This is a hands-on build — soldering, basic fabric mounting, and loading provided code — with no design work. Everything you need is written down: a parts list (~$80), a wiring diagram, a belt layout drawing, the two microcontroller programs, and a three-step verification procedure. What you'll build A wearable elastic belt carrying six small 3V coin vibration motors, each glued into a small rigid pod and Velcro-mounted so it can be repositioned. The motors are driven by a BBC micro:bit v2 through a ULN2003 driver chip, powered by a 3×AA pack, housed in a small pouch or box on the belt. A second micro:bit v2 serves as a handheld controller and talks to the belt over the micro:bit&#...

I’m building a small embedded prototype that can recognise a road accident the instant it happens, trigger a buzzer on-board and then text the vehicle’s GPS coordinates to a presaved emergency contact. An accelerometer will be the sole crash-detection sensor, so the firmware has to watch for abnormal spikes on that device, classify them reliably as a collision rather than rough driving, and fire the alert routine. Here is the workflow I have in mind: the microcontroller samples the accelerometer, confirms the threshold breach, sounds the buzzer for nearby help, fetches latitude and longitude from an attached GPS module and immediately sends an SMS through a GSM or LTE-M modem. If the cellular network is down, the code should queue and retry until a signal is regained. What I ...

We are looking for an experienced freelance Embedded Hardware + PCB + Firmware Engineer for an IoT/industrial electronics project. Location: Kolkata preferred Required hands-on experience: • STM32 Nucleo / Discovery boards • Embedded C/C++ and STM32 firmware • UART / USART / RS485 / Modbus RTU • USB-to-RS485 & UART-to-RS485 • GSM / 4G / LTE modules and AT commands • PCB schematic & layout – KiCad / Altium / Eagle / EasyEDA • Component selection & BOM preparation • Power supply and protection circuits • Logic analyzer / oscilloscope / multimeter • PCB bring-up, debugging and hardware testing • Sensor and industrial interface integration • ADC / 4–20mA / 0–2V interfaces Good to have: ESP32, MQTT, Lo...

I need an accelerator blocker to prevent unauthorized use of my vehicle. This anti-theft device should be activated and deactivated via a remote control. Key Requirements: - Function: Block accelerator to prevent unauthorized use - Activation/Deactivation: Remote control Ideal Skills and Experience: - Experience in developing vehicle security systems - Knowledge of remote control integration - Expertise in electronic engineering - Background in anti-theft device design and implementation Please provide examples of similar work and ensure the solution is reliable and secure.

Looking for an experienced developer to build an AI-based UAV detection and tracking system for a custom ArduPilot quadcopter using Raspberry Pi 5 and AI HAT+ 2. Scope includes real-time drone detection, object tracking, MAVLink integration, safe autonomous follow/stand-off navigation, telemetry logging, GCS interface, failsafes, SITL testing, and complete source-code handover.

PADS PCB Design for high speed 16 layer board. Repy only if you have the PADS software and experince of high speed circuits

I want to kick-off a line of small automotive sound devices by starting with a straightforward 12 V buzzer that gives a single, clear alert tone. Your job is to take the idea from concept all the way to a testable prototype that can survive the usual temperature, vibration and voltage transients found under the hood. What I need right now • Electrical design (schematic, BOM and PCB layout) • Component choices that are readily available and automotive-grade • Basic acoustic tuning so the tone is sharp and easily heard inside and outside the vehicle • Short validation notes showing it meets the normal 9-16 V operating range and can cope with load-dump / reverse-polarity conditions Show me examples of past work on comparable low-cost automotive or motorcycle elec...

I need a compact laser-based perimeter protection system for a commercial site that immediately calls a predefined phone number whenever the beam is interrupted. The solution must combine reliable laser detection hardware with a GSM module (SIM800, SIM900 or similar) and the embedded code to place that outbound call within seconds of a breach. The finished unit should be self-contained, run from standard low-voltage DC, and include clear wiring diagrams and firmware source so I can duplicate or service it later. If you can integrate basic tamper detection, weather-proof housings, or an optional battery backup, mention that in your proposal—those extras would be a plus but are not mandatory. To accept the work I will power up the prototype on-site, break the beam and confirm that my...

Embedded SNMPv3 Developer Required – STM32H723 + lwIP I am looking for an experienced embedded developer who has previously implemented SNMPv3 on STM32 or similar microcontrollers using lwIP. I already have basic SNMPv1 GET and TRAP functionality working on an STM32H723-based board. The middleware, BSP, FreeRTOS tasks, and UDP stack are already in place. The task is to extend the existing SNMP agent to support secure SNMPv3 communication. Project Requirements Phase 1: SNMPv3 Communication Implement SNMPv3 GET and TRAP functionality. Enable SHA authentication and AES-128 privacy/encryption using USM. Respond to authenticated and encrypted GET requests. Support GETNEXT, if feasible. Send authenticated and encrypted traps to Bitcom NMS. Ensure a valid, unique SNMP engine ID for the d...

We are looking for an experienced PCB designer to help with PCB schematic design, PCB layout, component selection, routing, and preparation of manufacturing-ready files.

I am looking for an experienced electronics/IoT developer to build a **working prototype of a 4G SIM-based security camera and a simple mobile app**. The camera should work without Wi-Fi and connect to the internet using a SIM/4G network. ### Prototype Requirements * Camera with live video * 4G/SIM connectivity * Microphone + speaker for two-way communication * Battery powered * USB-C/external power or power bank support * Remote viewing from a mobile app * Basic camera controls * Simple backend/cloud connection * Prototype should support the concept of having multiple cameras at one location For the first stage, I am **not looking for a production-ready/custom-manufactured camera**. Commercially available development boards/modules can be used. The goal is to build **one complete wor...

I need a complete set of KiCad schematics drawn from scratch for a fairly large, multi-board concept. The job is limited to the schematic stage—no PCB layout—yet the design is dense, with a high component count, multiple power rails, and several digital-analog interfaces that must be kept well organised through hierarchical sheets. I will supply a first batch of parts: CPUs, power converters, key connectors and a few specialised ICs, each with its electrical characteristics and a preferred footprint. The remaining devices—discrete passives, protection components, odds-and-ends ICs—still need library symbols created or matched to existing KiCad libraries, along with suitable footprints. Whenever information is missing, I will point you to the relevant datasheets; yo...

I’m building a compact entertainment gadget dedicated to high-quality audio playback and I need a complete PCB designed from scratch. The board must meet all the usual consumer-electronics constraints—low noise, minimal power draw, reliable mass-production tolerances—and fit inside a small enclosure that I will share once we start. Here’s what I expect from you: • Schematic capture based on my block diagram and component preferences • Optimised multilayer board layout with proper ground-plane management for clean audio paths • Gerber, drill and pick-and-place files ready for fabrication • A clearly organised BOM with current, purchasable parts and viable alternates • Brief design notes explaining critical decisions (impedance contro...

Custom Motherboard with Microchip 48‑pin MCU – 2x 3‑Digit & 1x 7‑Digit Seven‑Segment Displays, Oxygen Sensor, 3x 12V Solenoid Valves, Flowmeter, 2x 5‑Key Touch Keypad, 2x I2C LCDs,2x Water Level Sensor, Thermal Printer, 12V Relay for Motor, air pressure sensor Project Overview I need a custom motherboard (schematic, PCB layout, and firmware) based on a Microchip 48‑pin SMD MCU (TQFP‑48). The board must interface with: . 1x air pressure sensor · 2x 3‑digit seven‑segment displays for Qty · 1x 7‑digit seven‑segment display for amt · Oxygen sensor · 3x 12V solenoid valves – controlled via on‑board MOSFETs · 1x flowmeter – pulse output, interrupt input · 2x 5‑key touch keypad · 2x I2C LCD displays (16×2) · 2x...

I'm seeking an experienced developer to create the FaultLine Meter-Link, a compact industrial electrical measurement accessory. The device will act as a BLE measurement bridge between an existing multimeter and its standard 4 mm safety banana test leads. Key Requirements: - Handle real-time monitoring of voltage, current, and resistance. - Development of a companion app for iOS, Android, or Windows (platform to be confirmed). Ideal Skills and Experience: - Expertise in BLE technology and industrial measurement tools. - Proficiency in cross-platform app development. - Strong background in real-time data processing and display. Prior experience with industrial measurement devices and real-time monitoring applications is highly desirable. Please provide a portfolio showcasing relevant...

I have a hand-drawn circuit diagram that now needs the full KiCad treatment: a clean, conventional schematic, properly assigned footprints, a 3D board render, and final Gerber files ready for fabrication. The project is for my own personal use, so I’m happy to discuss component selection rather than lock you into any specific brands. Your background with KiCad should be evident in your reply—show me similar conversions or other boards you have taken from paper (or napkin!) through to production. Deliverables • KiCad schematic matching my sketch • Neatly laid-out PCB with footprints and design rules observed • 3D board view exported as STEP or screenshots • Verified Gerber set (RS-274X) and drill files I’ll supply the scanned sketch and...

I have an STM32F407VET board that will drive a completely stand-alone single-axis solar tracker. The controller must perform three key jobs: • Automatic sun tracking – use only a gyroscope/accelerometer (no light or temperature sensors) to predict the sun vector and move two actuators so the panel stays aligned all day. • Manual control override – via push buttons or simple UART commands I can pause the algorithm and jog each axis, then resume tracking instantly. • Data logging and monitoring – record attitude, motor commands, and health metrics to a micro-SD card while simultaneously streaming the same data over UART for live viewing. I expect clean, non-blocking C firmware that compiles in STM32CubeIDE for the F407VET. HAL drivers are fine; FreeRTOS...

I'm seeking an experienced IoT developer who can create a hardware device with a digital display. The device should operate offline, providing straight output based on programmed inputs. Key Requirements: - Hardware: - Digital display output - Programmed to do calculation. - App: - Display input data and calculations from the hardware - User-friendly interface Ideal Skills: - Experience in IoT hardware development - Proficiency in app development - Strong programming skills - Ability to create offline operating systems Please provide examples of previous work and a brief outline of your approach.

HARITRON – B2B Business Development / Lead Generation HARITRON is an engineering services company specializing in Embedded Systems, Firmware Development, Electronics Engineering, PCB/Hardware Development, IoT and Product Development. We are looking for an experienced B2B Business Development professional — NOT a digital marketer — who can identify potential clients, reach decision-makers and generate genuine business opportunities. Target industries: • Embedded & electronics companies • IoT & hardware startups • Industrial automation • Medical devices • EV & automotive • Robotics • Semiconductor/electronics • Industrial product companies Target decision-makers: Founder, CTO, VP Engineering, Head of R&D, Engineeri...

I’m putting together a small-run prototype board focused on digital signal processing that also needs onboard wireless connectivity. The goal right now is to capture a clean, production-ready schematic that I can pass straight into layout once the parts are locked in. Here’s what you’ll be working with: • 100 % digital component set—no analog front ends this time. • Core functions revolve around real-time signal manipulation plus low-power wireless links (think BLE, Wi-Fi or similar; I’m open to whichever stack fits best). • It’s strictly a development board, so easy probing, test headers and clear silkscreen labels are important. What I need from you: 1. Complete schematic in KiCad, Altium, Eagle or another well-known CAD tool. 2....

I need a concise Arduino Uno sketch that drives my Nema 34 stepper through its existing driver in a continuous loop with the following timing: • From home, turn 60° clockwise and hold that position for one second. • Return to the home position and pause one second. • Turn 60° anticlockwise, pause one second, then repeat the entire sequence indefinitely. Please base the calculations on a typical 200-step Nema 34 (1.8° per step) unless I can later change a constant for different micro-stepping settings. No sensors or limit switches are required; it is pure open-loop control. Alongside the .ino file, include a clear wiring diagram that shows the connections between the Arduino Uno, my stepper driver, power supply, and any needed resistors or opto-isolators so...

I already built the user interface in SquareLine Studio for an Elecrow 7" CrowPanel (ESP32-S3). The layout consists of four full-screen background images with four transparent touch buttons placed on top. Pressing a button should simply toggle a corresponding light by driving one of the three external relays wired to the CrowPanel’s GPIOs; touching it again turns the same light back off. What I still need is the firmware that ties everything together: • Import the SquareLine-generated LVGL project, read the touch events, and link each of the four on-screen buttons to its relay output. • Drive the relays through ESP32 GPIOs with proper debouncing and visual feedback on the button (e.g. highlighted state while the light is ON). • Provide a clean PlatformIO o...

I’m looking to turn our scattered know-how—hundreds of PDFs, policies, detailed reports, emails, meeting minutes, and assorted documentation—into a single Retrieval-Augmented Generation assistant that answers questions instantly and finds the exact source passage behind every reply. What I already have in mind • Ingestion pipeline that automatically pulls new or updated PDFs, email archives, and other internal files, cleans the text, and embeds it in a vector store (FAISS, Pinecone, or a similar tool). • A lightweight search layer so staff can type a query and receive both a concise answer and the ranked source documents. • Chat-style interface (web or Slack/Teams bot) backed by an LLM with citations, guardrails, and role-based access. • Modular...

R7FS5D37A3A01CFP See my side hardware ready Actually my project . Collect data from plc and push into cloud server The plc have rs232 port some plc ds485 port Protocol may be modbus or some plc own . We give all format and structure Total 10 type of plc See . The collected data from plc push i into 4 sec interval to 3 location Ip address At the same time 1. TCP Ip format 2 location 104 format Maximum tags 100 from plc From that 100 tags 15 tags only we push 104 format See the main key point on ur code the ec200 module always connect with network more details will be shared with potential freelancer

R7FS5D37A3A01CFP See my side hardware ready Actually my project . Collect data from plc and push into cloud server The plc have rs232 port some plc ds485 port Protocol may be modbus or some plc own . We give all format and structure Total 10 type of plc See . The collected data from plc push i into 4 sec interval to 3 location Ip address At the same time 1. TCP Ip format 2 location 104 format Maximum tags 100 from plc From that 100 tags 15 tags only we push 104 format See the main key point on ur code the ec200 module always connect with network more details will be shared with potential freelancer

I need a compact controller board built around the STM32F103CBT6 in the 48-pin LQFP package (or a pin-compatible alternative with the same Cortex-M3 core). The board must expose three independent serial channels: • RS-485 • RS-232 • A UART linked to an on-board serial-to-TCP module that speaks plain TCP/IP Reliability is critical. Please integrate proven over-voltage, short-circuit and over-current protection on all power inputs as well as the three interface blocks. If you are more comfortable substituting a different F1-series part with identical footprints, that’s fine as long as the firmware and pinout remain drop-in compatible. Deliverables • Complete schematic (Altium, KiCad or EasyEDA) • Four/two -layer PCB layout with proper isolation be...

Project Overview: Design and prototype a 446 MHz wireless audio broadcast system for indoor mosque sound in India (using the license-free PMR446 band). 1. Mosque Transmitter Unit: - Audio line-in from Mosque PA amplifier (Ahuja). - MAX9814 AGC leveler/compressor to prevent voice clipping or distortion. - Auto-VOX sound trigger to start transmitting automatically when the Muazzin speaks (zero manual buttons). - SA818S-U UHF module (1W Tx mode) tuned to 446.0562 MHz with 67.0 Hz CTCSS tone. - 50-ohm SMA connector connecting to outdoor Diamond X-50 minaret antenna via 15m RG-213 cable. - 5V DC power supply with surge protection. 2. Home Receiver Speaker Box: - SA818S-U module (Rx mode) tuned to the same 446.0562 MHz + 67.0 Hz CTCSS code. - Hardware squelch/mute control: MUST be 100% dead si...

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 Makefiles...

We are looking for a skilled and reliable KiCad developer/user for a potential long-term partnership. At the beginning, you will work in a trial/test period. We will give you a small KiCad task to evaluate your skills, work quality, communication, and reliability. Trial task: Use our Rounder for Tracks v3.2 KiCad plugin. Test it on a PCB with angled tracks. Check whether the tracks are rounded correctly. Try different plugin settings. Send screenshots after testing. Provide clear feedback about the results and any issues you find. If we are satisfied with your work, we will hire you for a long-term partnership and provide you with more KiCad-related tasks and projects on an ongoing basis. We are looking for someone who is interested in long-term cooperation, not just a one-time projec...

We are building a fuel tanker trailer monitoring system (pilot project) for petrol-PMS/diesel (AGO) distribution clients in our region. We have a detailed technical blueprint and now need: 1. Organizations/suppliers who can provide industry‑rated, ATEX‑compliant hardware (fuel level probes, smart GPS locks, telematics gateways, etc.) at prototype‑friendly pricing, ideally with OEM/white‑label options. 2. Embedded/firmware engineers and backend/API developers to integrate this hardware with our web/mobile platform via Modbus RS485, MQTT, and REST APIs. Note: This is a pilot project phase with ability to scale the concept to a wider client base after the tests. What We Already Have Complete system architecture and hardware list but need to know if we can get manufacturers with industry rat...

I need a complete IoT gateway hub that brings LTE (4G), Wi-Fi, Bluetooth, Zigbee and sub-GHz RF into a single, reliable unit for remote monitoring and alerting of smart-home devices. The goal is straightforward: gather data from a variety of in-home sensors and actuators, push it to the cloud over cellular when Wi-Fi is unavailable, and relay actionable alerts back to the user in real time. Here is what I expect: • Hardware design that accommodates the five radios with proper coexistence planning, power management and antenna layout. • Embedded firmware that can automatically select the best back-haul (LTE or Wi-Fi), maintain secure connections and expose a clean API or MQTT/HTTP interface for the smart-home layer. Also with bluetooth, zigbee and rf. • Delive...

PROJECT TITLE: WEAR IT V1 – Compact Wearable PCB & Schematic Design PROJECT OVERVIEW: We are developing WEAR IT, a compact screen-free wearable health and fitness band. The functional proof-of-concept (POC) is already working. We now need an experienced PCB and electronics engineer to convert the existing engineering architecture into a professional, manufacturing-ready custom PCB. This is NOT a concept-stage project. The electronics architecture and major components have already been selected. The engineer's responsibility is to create the professional schematic, PCB layout, routing, libraries, verification and complete manufacturing documentation. MECHANICAL TARGET: Maximum PCB size: 33.5 mm × 23.0 mm Maximum complete wearable device envelope: 34.7 mm × 24...

We are a medical device manufacturer developing the next-generation electronic control box for an existing product. We have received a Statement of Work from an Indian engineering services firm covering PCBA design, firmware development and Engineering Verification Testing, and we want an independent expert opinion on it before we sign. This is a review engagement only — no design work. The device (in summary): mains-connected Class II active medical device. Single integrated 6-layer PCBA with a universal-input mains stage using a certified medical AC/DC module, four isolated AC relay channels, dual isolated 4-wire PT1000 sensing, coolant flow and CT current monitoring, an STM32H7-class MCU with external SDRAM, a 5–7" IPS capacitive touch display running LVGL, an LTE Cat...

I’m looking for an embedded-systems engineer who can take ArduPilot’s AP_Periph codebase and turn it into a robust CAN-bus battery monitor. The unit will sit on a DroneCAN network and stream full MAVLink telemetry, so it can slot straight into my existing ground-station setup without any extra protocol bridges. Integration with other telemetry options such as or SmartPort isn’t needed right now. Key functions I must see on the bus: • High-accuracy individual cell voltage for every cell in the pack (not just pack voltage) • Hall-effect current sensing that stays linear and low-loss all the way to 400 A • Standard AP_Periph health, identification and parameter handling so the flight controller recognises the device instantly Deliverables 1. Schemat...

Our sports venue runs on an ageing electronic scoreboard built around seven-segment LED and P10 LED panels. It still works, but erratically, and it can only be operated from the hard-wired control box bolted under the grandstand. I need the whole system modernised so I can walk onto the field with a phone or tablet and run the show from there. Scope of work • Inspect every board, power rail and driver on the existing hardware, replace any damaged or obsolete parts, and leave the display fully refurbished. • Design and build a new controller unit that adds rock-solid wireless connectivity plus a battery-backup circuit so a brief power loss never blanks the screen. • Write clean firmware for that controller, making sure it can address both the seven-segment digits and t...

I need production-ready firmware for a Renesas MCU that will exchange data through a Quectel EC200 cellular module using both IEC 60870-5-104 and plain TCP/IP protocols. The code must handle complete data transmission, reception, and on-board processing so the MCU can act as an intelligent field unit that talks reliably to a SCADA master as well as to standard IP services. Scope • Build or integrate a lightweight IEC104 stack alongside a TCP socket layer that can coexist without blocking. • Manage all EC200 interactions (AT commands, connection setup, keep-alive, error recovery) over UART/SPI as appropriate. • Implement configurable buffers, parsing, and frame validation so that raw sensor payloads can be wrapped/unwrapped for each protocol. • Provide hooks whe...

I already have the full mechanical side of a new, cost-effective outdoor vending machine—frame, actuators, motors, sensors, the lot. What’s missing is the electronic heart: a sleek touchscreen interface, a reliable controller, and rock-solid QR-code payment processing. Here’s what I need built and integrated: • A capacitive touchscreen (preferred size 7-10 in) that looks premium outdoors, survives glare and light rain, and gives a smooth, intuitive flow from product selection to checkout. • A central controller (Raspberry Pi, STM32, or a similarly capable board—open to your recommendation) that drives the existing motors and sensors, handles temperature monitoring, door locks, and any future add-ons. • QR-code payment only: the screen should dis...

Experienced KiCad 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...

Hi, We are seeking to acquire a substantial, production-grade automotive software codebase with legally transferable usage rights for further development. Our focus areas include: • ECU / Firmware development • AUTOSAR • CAN / CAN-FD communication • UDS diagnostics • ADAS (Advanced Driver Assistance Systems) • EV/BMS (Electric Vehicle/ Battery Management Systems) • Embedded Linux or RTOS Technology Stack: We are flexible regarding the technology stack, but prefer C/C++, Python, COBOL, AUTOSAR, embedded Linux, or other widely used automotive industry standards. Key Requirements: 1. Real, functional production-grade source code (not demos or prototypes). 2. High-quality code with clear structure and documentation. 3. Legally transferable licensing and u...

Pago 90 usd entrega urgente BRIEF TÉCNICO — DISEÑO PCB ESP32 1. Objetivo Desarrollar una PCB personalizada tomando como referencia la NodeMCU ESP32 v1.1, adaptándola al módulo ESP32-WROVER-IE (LCSC C701351) y a los requerimientos indicados por el cliente. El diseño debe realizarse en KiCad, dejando todos los archivos preparados para fabricación/ensamblaje mediante JLCPCB. --- 2. Dimensiones y restricciones mecánicas - Mantener la posición y distribución de los pines principales compatibles con la referencia NodeMCU ESP32 v1.1. - La PCB puede ser más larga si es necesario, pero no debe sobresalir de la PCB principal U1 en las zonas donde exista esta restricción. - Los tornillos, fijaciones y componente...

Chip integrado en espinilleras de fútbol para medir distancia recorrida (hardware + app/web) Tengo una marca de espinilleras de fútbol personalizadas (AG8) y quiero desarrollar una versión "smart": integrar un chip entre la carcasa protectora y la espuma interior que permita a cada jugador ver cuántos kilómetros ha corrido durante un partido o entrenamiento. No tengo definida la solución técnica todavía — busco a alguien que me guíe desde cero y me proponga la mejor forma de hacerlo (chip + app, chip + web, con o sin batería, etc.). Contexto: Ya he explorado por mi cuenta una posible arquitectura basada en NFC con chips de "energy harvesting" (familia ST25DV) y un supercondensador, para evitar ...