Sensor intergration jobs

I need a purpose-built software package that lets me run my CNC‐based 3D printers from a single, intuitive interface. The focus is on day-to-day control and operation rather than design work: loading G-code, managing multi-axis motion, optimizing toolpaths on the fly, and keeping a constant eye on temperatures, feeds, and sensor feedback without pausing a job. The machines on my floor vary, so the application has to drive everything from a straightforward FDM gantry to more complex SLA and SLS setups. That means kinematics for rotary or additional linear axes, stepless speed changes, and smart re-slicing or re-planning if a collision or out-of-range condition is detected. Real-time monitoring is non-negotiable; I want live dashboards that surface spindle speed, laser power, materia...

...complete experimental cycle for thrust-generation research on a set of fixed-pitch propellers, followed by a concise, professional engineering report that stands on its own for peer review. Scope of work You will design and run a bench-top test that captures thrust, torque and the additional parameter I care about—RPM. Accurate synchronisation between the load cell (or thrust stand), torque sensor and optical tachometer is essential so that each data point can be traced back to the same moment in time. Once the data are in hand, reduce them, correct for atmospheric conditions, and compare the results with established propeller momentum theory and blade-element predictions. What the final package must contain • Raw and reduced data files in CSV or MATLAB‐readable ...

...surface-EMG biofeedback prototype that is almost ready for a clinical trial. My background is in Occupational Therapy, so I need a technically-minded partner to finish the engineering details. The prototype already captures clean EMG signals, but three areas still need work before it enters the clinic: 1. Fixing the vibration sensor • Diagnose the current instability (occasional dropouts and inconsistent amplitude) • Re-calibrate and, if necessary, replace the sensor so it triggers haptic feedback within 50 ms of threshold detection • Deliver updated firmware and wiring diagram 2. Building EMG display software for Windows • Real-time data visualization (raw signal and RMS/average) • Session recording to CSV or similar fo...

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...

...teachers and students interact directly with the projected image. The core requirement is an integrated interactive touch-screen capability—think smooth, low-latency annotation right on the board—paired with the brightness and reliability expected from a presentation unit. Here’s what I’m after: • Hardware: a projection engine bright enough for well-lit rooms, plus the touch-enabled overlay or sensor array that will register multiple fingers or a stylus without calibration headaches. • Software: driver package or embedded firmware so the touch layer appears as a standard HID device to Windows, macOS, and ChromeOS. Annotation tools or whiteboard software hooks are a bonus. • Mechanical design: compact housing that can be ceiling-mounted...

I need a detailed sketch for an automatic plant watering system tailored for indoor plants. The system will draw from a water tank and incorporates a safety shut-off mechanism. Key Components: - Sensors - Arduino/Raspberry Pi - Water pumps - Safety shut-off Ideal Skills and Experience: - Experience with Arduino/Raspberry Pi - Knowledge of sensor integration - Familiarity with water pumping systems - Ability to create clear, functional system sketches

I need a concise boundary-definition plan that lets me track human movement in a small outdoor space—think a plaza or pocket-park. You may choose either laser range-finders or LiDAR sensors; I’m flexible as long as the final solution reliably flags when a person enters or exits the defined perimeter. Here’s what I’m after: • A site-layout drawing that shows optimal sensor placement and coverage, taking into account line-of-sight, mounting height, weather protection, and power/network needs. • Configuration guidelines for the chosen hardware (recommended makes, models, beam angles, ranges, data rates). • A basic processing workflow or script that converts raw distance data into real-time boundary-crossing events I can feed into my analyti...

I need an embedded developer who can write reliable, production-ready firmware that squeezes extra performance from aftermarket automotive modules. The immediate focus is on three devices: • CNG timing advancers • O2 optimizers • CKP sensors The end goal is measurable performance improvement, not just basic functionality, so timing accuracy, fast signal processing and rock-solid stability are essential. I am not certain whether any legacy code exists for these boards; you may be starting from a clean slate or refining half-finished firmware. Either way, I will supply the hardware, electrical schematics, and any reference data I can gather. You will advise on toolchains, microcontroller families and calibration workflows, then deliver: • Complete, compile-ready...

I'm looking for a skilled developer to write C++ code for an ESP32-based drone equipped with an MPU6050 sensor. The code should handle both flight control and sensor data processing, using Wi-Fi as the communication protocol. Key Requirements: - C++ programming expertise - Experience with ESP32 and MPU6050 - Knowledge in drone flight control algorithms - Proficiency in sensor data processing - Wi-Fi communication protocol implementation Ideal Skills: - Background in robotics or drone development - Familiarity with relevant libraries and frameworks - Strong problem-solving skills - Ability to provide well-documented and maintainable code - It also has flysky transmitter and ibus receiver Please share any relevant experience in your bids.

I have a growing archive of drill-hole and operational logs from our mining sites and I want a specialist to turn those raw tables and sensor feeds into clear, actionable insights that help us streamline day-to-day operations. The core focus is optimisation: I’m less interested in historical “what happened” reports and far more interested in seeing where we can tighten cycle times, cut idle hours, and schedule maintenance before downtime strikes. You’ll start by cleaning and structuring the datasets (CSV exports from fleet management systems, time-series from pressure and torque sensors, and geology logs). From there, I expect a blend of descriptive summaries to frame the current state, followed quickly by predictive or prescriptive modelling that pinpoints ...

I have a set of drilling-related mining datasets that need to be explored specifically for trend analysis aimed at pinpointing potential anomalies. Your job is to di...your methodology, the key findings, and recommended next steps. Acceptance criteria: • Code runs end-to-end on my machine with only standard open-source libraries. • All anomalies are referenced by row ID or timestamp so I can trace them back in the raw file. • Explanations are written in plain language I can share with non-technical team members. If you have experience with mining or industrial sensor data that’s a bonus, but strong skills in statistical trend detection and anomaly identification are the main requirement. Let me know your preferred tooling and a realistic timeframe, and we can ...

...receive monthly reports, not live access. Required Features 1. Admin Dashboard (Single User): Secure login for me (the admin) only. Client Management: Add, modify, or delete clients. Sensor Management: Assign temperature/humidity sensors to each client. Contact Management: Store client phone numbers and emails for alerts and monthly reports. 2. Alert System: Configure alarm thresholds (min/max temperature, min/max humidity) per sensor or per client. Automatic SMS notifications sent to: Me (the admin) The concerned client Viewable alarm history log. 3. Data Storage: Secure storage of all historical sensor data (temperature, humidity, timestamps). All data is stored and accessible only to me (the admin). 4. Monthly Report Generation: Automatically generate a mo...

...the car is parked • Clean vehicle-grade power input and automatic power-down logic to protect the battery Scope of work 1. Component selection: image sensors, SoC/MCU (ARM, RISC-V, or similar), 4G modem, GPS, IMU, power management, and thermal considerations. 2. Custom PCB design and layout, followed by manufacturing files ready for a quick-turn proto run. 3. Low-level firmware to handle sensor pipelines, H.264/H.265 encoding, LTE networking, GNSS, SD-card file management, and event-based recording (FreeRTOS or bare-metal is acceptable). 4. Assembly of at least one fully functional prototype with enclosure recommendations. 5. Bench and in-vehicle tests validating video quality, streaming stability, GPS accuracy, and motion/impact triggers. Deliverables •...

Looking for an experienced PCB design freelancer to design a custom f...layout) built around the STM32H743VIT6. The design follows the MicoAir743v2 as a base reference (port layout, power architecture, connectors), with these custom additions: dual IMU (ICM-20948) + dual barometer (MS5611) for redundancy, 2x CAN bus (FDCAN1/FDCAN2), microSD logging, and GH-series connectors throughout. Power input up to 6S LiPo with 5V/12V BEC outputs. Full pinout tables, power budget, sensor wiring, and reference links are provided in an attached design brief — no reverse-engineering needed, just execution. Looking for: experience with multi-layer PCB layout (Altium/KiCad), STM32-class MCU routing, and ideally prior flight-controller/drone hardware work. Deliverables: schematic, PCB layout...

...I want the final file to compile error-free in the current Arduino IDE and be easy for me to tweak later. Here’s the core logic I’m after: • Speed control – PWM or another reliable method that lets me adjust RPM smoothly from zero to full throttle. • Direction control – forward/reverse switching triggered by a digital input or a serial command. • Automated stopping – when a limit switch, sensor, or timed event is triggered the motor should brake or coast to a halt, then wait for the next command. If a standard H-bridge driver library (e.g., built-in PWM pins, L298N, DRV8871, etc.) makes things simpler, feel free to use it; just note it clearly in the comments so I know what hardware you assumed. Please structure the code so pin ...

I am looking for an electronics engineer to design a small battery-powered IoT sensor PCB based on the ESP32-C3. The goal is to create a compact prototype PCB capable of monitoring environmental conditions and communicating wirelessly through Wi-Fi/Bluetooth. Main Requirements: The PCB should include the following: * ESP32-C3 module * BME280 temperature, humidity and pressure sensor * Ambient light sensor * Sound sensor/microphone input * 0.96" I2C OLED display * Li-ion battery connector * Li-ion battery charging circuit * USB-C connector for charging and power * 3.3 V voltage regulation * Power ON/OFF switch * User push button * Status LED * GPIO expansion header * Required protection and decoupling components Power The board will be powered by a single...

...telescoping runners.Pull-Out Saree Holders: Extend fully from the cabinet carcass to provide quick visibility for delicate ethnic garments.Side-Mounted Tie and Belt Pull-Outs: Consolidate small items on compact, multi-hook retractable metal arrays Specialized Organizers & LightingVelvet Jewelry Drawer Inserts: Protect watches, rings, and valuables inside partitioned, fabric-lined drawer trays.Motion-Sensor LED Light Bars: Illuminate dark corners automatically using magnetic rechargeable lithium bars.Pull-Out Storage Baskets: Replace standard drawers with breathable wicker, wire, or canvas deep-storage Vanity Mirrors: Slide out and swivel 180 degrees, tucking flat against internal side panels when not in us Note this desing will go multiple revision until design is approve...

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...

...for reliability, availability, cost or manufacturability. ⸻ 3. Controller Requirements The PCB will act as the main electronic controller for the RO plant and should be designed around an ESP32-based control system. The controller should support, as applicable: Digital Inputs * Float/level switches * Tank level inputs * Pressure switches * Plant fault inputs * Other ON/OFF field sensors Sensor Inputs * Flow sensors * TDS/EC or water-quality sensors where required * Other analog/digital sensors required by the final system Outputs The controller should be capable of controlling: * High-pressure pump * Raw-water/feed pump * Solenoid valves * Flush valves * Dosing systems where applicable * Other RO plant actuators The exact output architecture should be determined by th...

...The system should prevent the same recognized face from performing another operation for 20 minutes, while allowing a new face to proceed. - Integration between Android and an ESP32. - Control of a 12V DC Gear Motor to operate a mechanical mechanism and perform one operation at a time. - Integration with sensors such as: - Item presence sensor. - Successful dispensing/output detection sensor. - Limit switches for mechanical positioning. - Door sensor. - Inventory/stock monitoring if required. - Essential functions should continue working locally if the internet connection is lost, with synchronization when the connection is restored. Cloud System The project should include: Backend + API + Database + Cloud Infrastructure The architecture should be sca...

...designated areas. The goal is simple behavior correction for containment, not trick teaching or general exercise. When a pet approaches or crosses a virtual or physical boundary, the unit should deliver a very mild shock stimulation—strong enough to deter, yet well within accepted animal-safety standards. Here is what I’m looking for: • A complete concept and schematic for the device, including sensor choice, power requirements, safety circuitry, and enclosure design. • Firmware or control logic that triggers the mild stimulus reliably and only when intended. • A brief user-setup guide so anyone can define or adjust boundaries indoors. If you can add optional sound or light cues as secondary warnings before the stimulus, that’s a plus, but ...

...assembly The design should remain parametric/editable wherever practical, so dimensions can be revised after prototype testing. Intended Product The PeafowlPro Hub is a wall-mounted environmental monitoring controller intended for peafowl breeders, aviaries, brooders, barns, and similar environments. It will use the UNO Q’s Wi-Fi capability to communicate wirelessly with separate PeafowlPro sensor modules. I am looking for someone who has experience designing electronics enclosures, SBC/PCB mounting systems, snap-fit plastic parts, and FDM-printable products. Experience taking prototypes toward injection molding or commercial manufacturing would be a plus. Please include examples of previous electronics-enclosure or PCB-housing work in your proposal....

...building a handheld IR thermometer and need a compact PCB designed from a working schematic/netlist I already have. The prototype works on breadboard; I need a manufacturable SMD board. Core components: ESP8266 (MCU module) MLX90614 IR temperature sensor (I2C, TO-46 metal can package — through-hole) Waveshare 1.69" LCD module (SPI, header/FPC connection) 3.7V 400mAh Li-Po battery (JST-PH connector) TP4056-based charge/protection circuit P-MOSFET load switch on the sensor's power rail (GPIO-controlled), used to force a clean power-on reset of the sensor and avoid I2C bus lockups I2C pull-up resistors, decoupling caps, power switch, optional status LED Scope of work: Review and refine the schematic (netlist and BOM will be provided) in KiCad or EasyEDA &m...

I’m 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...

...freeze, commands fail to reach the field devices, and alarms flood the log. I need the existing project inspected, its driver or protocol stack corrected, and the link restored to rock-solid reliability—no redevelopment from scratch, just a clean, well-documented fix. Scope of work • Audit the current SCADA project, driver settings, and network configuration. • Pinpoint the root cause of the PLC, sensor, and actuator comms failures. • Implement and test the corrective actions so data reads accurately and control writes execute every cycle. • Supply a brief technical report summarizing findings, changes, and proof-of-run. Acceptance criteria A continuous eight-hour production run with zero lost packets, frozen tags, or mismatched data will signal ...

I’m building a small, se...ideal. Deliverables • Schematic and full BOM ready for ordering • Clean, well-commented firmware (C/C++ or MicroPython) with clear mapping between sensor values and LED behaviour • Assembly guide plus short video or photos that prove the prototype performs as specified • Quick-start user notes so anyone can flash firmware, power up, and see it work Acceptance criteria The prototype must power on, auto-detect the chosen sensors, and update the LEDs in real time; any sensor reading outside a safe range should trigger a noticeably different visual state so it’s obvious even from across a room. If you have a solid track record with IoT, sensor fusion or LED artistry and can package everything into a tidy, ...

I need a clean, rectangular enclosure model that I can drop straight into Bambu Studio and hit print. Inside, the housing must include accurate mounting bosses or standoffs for three elements: a 4" LCD, a GPS/9-axis sensor board, and a Raspberry Pi 4B. Please reference the official Raspberry Pi 4B and common 4" SPI LCD footprints so everything lines up without shimming. External requirements are simple: keep the overall shape rectangular and incorporate ventilation slots to help the Pi breathe; all other ports can stay sealed for now. Snap-fit or screw-together construction is fine as long as the lid can be removed without stressing the print. Deliverables • Ready-to-print 3MF or STL tailored for Bambu Lab printers • Source CAD file (Fusion 360, SolidWorks,...

I have a new electronic concept that now needs to move from idea to a working prototype, and I want it laid out in Autodesk EAGLE. Your task is to design a prototype-ready PCB that brings together three key blocks: a microcontroller core, se...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-sensor boards in Eagle and can turn revisions quickly, let’s talk so we can lock down the pin-mapping and get this prot...

...idea/reference design to a functional prototype. The project will involve: Mechanical/product design Internal component layout and packaging HVAC and airflow design Fan/blower selection and integration Air duct/path design Heat exchanger integration Filter integration Air-sealing between fresh and exhaust air Waterproofing and condensation considerations Noise and vibration reduction Electronics/sensor integration 3D CAD and manufacturing drawings Prototype development and testing DFM/DFA for future production Ideal Candidate We are not looking for only a CAD/3D designer. We need someone with practical experience in HVAC, ventilation, airflow and physical product development. Experience with the following would be a strong advantage: HRV/ERV or fresh-air ventilation systems ...

...module cost, integration cost and recurring fees 7) Notifications Initially by email: Booking confirmation Payment confirmation Reminder Reschedule Cancellation System should be ready for future SMS/WhatsApp. Arabic and English templates must be editable. 8) Technical Knowledge / Articles We will publish original automotive technical articles and real workshop cases such as Ford Taurus front sensor retrofit, SYNC 4 upgrades, 360 camera retrofits, programming and transmission diagnostics. Articles should support: Text Photos/videos Vehicle information Categories/tags Author/date Related services Related forum discussions Public technical content must be search-engine indexable with proper SEO basics: clean URLs, page titles, metadata, sitemap, canonical handling and sensib...

I’m sharing a rich, multi-sensor environmental dataset and I want to see just how much actionable knowledge you can squeeze out of it. Your mission is to surface at least 35 meaningful KPIs and supporting metrics, lay every calculation bare, explain why each one matters to real-world decision-making, and wrap it all into both an interactive Excel dashboard and an accompanying analytical report. The dataset blends multiple environmental streams, so correlations, anomalies, quality indicators, and uncovering hidden patterns are all on the table. I will reward depth of thought far more than flash: half of the score is tied directly to the strength, originality, and relevance of the KPIs you define. Methodology and transparent maths account for another 20 %, clarity of presentati...

...full detail provided to the selected freelancer) - MCU: ESP32 (DevKit) - Shared SPI bus: TFT screen + SD card (dedicated CS lines) - Capacitive touch TFT screen (ST7796S controller + FT6336U touch) - 2 separate I2C buses (Wire / Wire1) carrying: DS1307 RTC + EEPROM, dedicated settings EEPROM, MCP23017 (48V/24V rail relays), PCA9685 (motor PWM + backlight + enclosure fan/heater), 2x AS5600 angle sensor (azimuth/tilt), 3x ADS1115 analog-to-digital converter (4x LDR, battery voltage, anemometer, analog fallbacks), MPU6050 gyroscope, PN532 NFC module - 2 DC motors driven via BTS7960 drivers (enable signals on native GPIOs) - 48V and 24V power rail management (relay switching) - DS18B20 temperature probe (OneWire) - Rotary encoder (menu navigation) EXPECTED SCOPE OF WORK - Review/val...

I'm seeking an experienced electrical engineer to calibrate park sensors on a Porsche. Key requirements: - Expertise in electrical systems, specifically in automotive applications. - Proficiency in park sensor calibration. - Experience with Porsche vehicle systems is a plus. Ideal skills and experience: - Electrical engineering degree or equivalent experience. - Hands-on experience with automotive electrical systems. - Strong problem-solving skills and attention to detail. Please share relevant experience and approach for the task. We build a conversion based on the 718 Boxster. We are looking for someone that can help us get the park sensors to function correctly. My understanding is they are not adjustable.

...algorithm profiling and optimisation across platforms will be valuable. Key deliverables • A fully functional Baxter arm simulation that plans and executes repeatable, accurate motions without controller or kinematic errors • Step-by-step notes or patched files so I can reproduce the fix from a clean workspace • Starter launch package for the ROS 2 unmanned car experiment, including sample maps, sensor stubs, and a working navigation pipeline • Brief summary of algorithm changes or parameter tweaks you made and why they matter Acceptance criteria 1. Baxter trajectories run at 1× real time for at least ten consecutive pick-and-place cycles with no joint limit or self-collision violations. 2. Unmanned car sim boots with obstacle avoidance ena...

...rely on computer-vision techniques (Python with TensorFlow or PyTorch is fine). I need: 1. A well-commented notebook or script that trains and tests both models on my dataset. 2. Clear instructions for retraining with new images. 3. Basic performance metrics (accuracy / F1 or similar) on a held-out sample. 4. A short README outlining next-step recommendations for adding soil, weather, or sensor data as we expand toward irrigation management and market-linkage features. Keep the code modular and lightweight so it can eventually run on a modest cloud instance or edge device. Deliver everything in a shared repo or zip file within a week, and feel free to suggest any open-source libraries or pre-trained networks that speed things up while staying within a small footprint....

...IoT Telemetry System (ESP32-S3 / nRF52840) Description Overview We're a start-up company building a ruggedized wireless sensor network for remote field monitoring. We're looking for an experienced embedded engineer (or a small shop) to design, assemble, flash, and bench-test production-ready sensor nodes and a cellular gateway, built to a detailed technical spec we provide after NDA. This is a build-to-spec engagement: you own hardware sourcing/assembly and firmware implementation/validation. Cloud infrastructure, field deployment, and end-customer work are out of scope and handled in-house. What you'll build (high level) Battery- and solar-powered wireless sensor nodes with proximity, motion, and vibration sensing Long-range sub-GHz (LoRa / SX1...

We are looking for an experienced Embedded Hardware/PCB Design Engineer to design a custom, compact AIO avionics board for a sub-250 g light-show drone. The board will combine the flight-controller hardware and RTK-GNSS positioning system into a single lightweight PCB. T...selection and DFM knowledge UAV/flight-controller hardware experience is highly preferred Expected deliverables: Complete system architecture, finalized BOM, schematic source files, PCB layout source files, Gerbers/ODB++, pick-and-place and manufacturing/assembly documentation. Applicants who have previously designed flight controllers, UAV avionics, GNSS/RTK hardware or similar compact sensor-heavy embedded boards will be strongly preferred. Please include examples of relevant boards you have personally...

I need a complete schematic that lets the BL0906 energy-meter IC into a three-phase design and talk to it through a standalone STM32F103CBT6 via SPI. The STM32 only has one job: grab raw registers from the BL0906, crunch RMS voltage and current, active power, active energy, fault flags and line frequency, then pass the results to my main controller (an ESP32) vi...cut-off practical for 50/60 Hz metering accuracy while giving good surge immunity. • Calibration option required for accuracy. What I expect from you • A clear, production-ready schematic (Editable file in KiCad ). • Annotated BOM with part numbers that are easy to source. • Brief design notes explaining CT burden selection, jumper logic and the passive filter design so I can tweak values if my sensor...

...P-Channel MOSFET for Reverse Polarity Protection. Motor Driver: Integrated Dual H-Bridge (DRV8833** preferred, or L9110S) driving 2x DC Motors (1.5A peak). Protection: PTC Polyfuse for stall protection. Audio: Onboard Passive Piezo Buzzer (driven via NPN + 1kΩ Resistor). Safety: 2-Pin Header for external Tally Light (driven via 220Ω Resistor on Pin D3). Reflex Sensor: 3-Pin Header (VCC, GND, Signal) for a Sharp GP2Y0A41SK0F IR Distance Sensor....

I need a complete schematic that lets the BL0906 energy-meter IC into a three-phase design and talk to it through a standalone STM32F103CBT6. The STM32 only has one job: grab raw registers from the BL0906, crunch RMS voltage and current, active power, active energy, fault flags and line frequency, then pass the results to my main controller (an ESP32) over SPI, wh...practical for 50/60 Hz metering accuracy while giving good surge immunity. • Calibration option required for accuracy. What I expect from you • A clear, production-ready schematic (PDF + editable file in KiCad ). • Annotated BOM with part numbers that are easy to source. • Brief design notes explaining CT burden selection, jumper logic and the passive filter design so I can tweak values if my sensor...

...dependencies. Accuracy, fast initial fix, and smooth hand-offs between floors are crucial. Stairs, elevators, escalators, corridors, gates and individual rooms must all be routable, and the engine should always calculate the optimal path, then automatically reroute if a visitor strays. Deliverables • Parsed and structured multi-floor map (2D & 3D layers) generated from the supplied plans • BLE-sensor-fusion positioning module showing real-time location & orientation • Turn-by-turn routing with dynamic reroute logic across floors and vertical connectors • Well-documented SDK/API ready for integration into an Android project, including sample code and test data • Build/usage instructions plus brief report on achieved accuracy and recommende...

...renovation project at a pharmaceutical company. Project Details - Existing washrooms to be dismantled and completely renovated. - Separate Male and Female washrooms. - Male washroom: approximately 12 ft × 13 ft (156 sq.ft.) - Female washroom: approximately 12 ft × 13 ft (156 sq.ft.) - Total area: approximately 312 sq.ft. - Male: 3 WC/commode cubicles + urinals. - Female: 6 WC/commode cubicles. - Sensor-operated taps and urinals. - Existing main drainage is available. - Target appearance: premium mall / airport / hotel-type commercial finish. Design Requirement We require 3–6 different complete 3D design concepts for selection. Each concept should explore different combinations of: - Floor and wall vitrified/porcelain tiles - Marble/stone finishes - Wood-lo...

PCB Design Engineer — Finish & Validate a 4-Layer Sensor Board (KiCad, JLCPCB) Type: Fixed-price or hourly, short engagement (est. 1–2 weeks of focused work) Tools: KiCad 10.x (project files provided), JLCPCB fab/assembly Overview We have a 112mm round, 4-layer, sealed/IP67, battery-powered wireless sensor board (built around an ESP32-S3 module) for a sports-court sensor system. The design is largely complete: schematic captured, board placed and routed across all 4 layers ( / GND plane / POWER plane / ), DRC-clean against JLCPCB's fab-floor rules, and most components matched to real, in-stock LCSC part numbers with a JLCPCB-format BOM and CPL/position file already prepared. We need an experienced PCB/hardware engineer to (1) independently revi...

I need a hardware engineer who can take an industrial-grade IoT concept from paper to fully functioning prototype. The device’s sole purpose will be data collection and analysis of environmental parameters—primarily temperature, humidity and any other ambient metrics you feel are valuable for harsh factory floors. Here’s what I already know I need: • A rugged sensor suite that can survive high-noise, dusty manufacturing spaces. • A low-power MCU or SoC with built-in connectivity (LoRaWAN or Wi-Fi are both acceptable; advise on the best fit). • On-board storage for buffering readings when the network drops and secure OTA firmware-update capability. • Accurate calibration routines so the environmental data is trustworthy when it reaches the...

Analog Electronics Consultant — Remote Guidance for a Sensor Prototype We are building an analog sensing circuit and need an experienced engineer to guide us through it remotely. We do the bench work; you tell us what to do, what to measure, and how to interpret what we find. What you would actually do: Review our existing schematic and flag anything wrong or fragile Give us clear, specific instructions we can follow at the bench Tell us what to measure at each step and what reading indicates success When something does not work, help us isolate the cause rather than guess Improve our approach where you see a better way Must have: Good knowledge of Analog Circuit Design and real hands-on analog circuit experience Strong grasp of AC behaviour: resonance, reactance Groundin...

...* Battery voltage * Battery percentage * Motor current * Encoder position * Motor temperature if sensor is available * Servo position/status * Fault history * System status ## Offline Operation This is a critical requirement. The machine must continue to operate when there is no Internet signal. The system should use its own local Wi-Fi network and local web server. All essential control functions must work locally without cloud connectivity. ## Electronics / PCB Requirements The engineer should design a production-oriented PCB including appropriate: * MCU * Wi-Fi * Power regulation * Battery management/interface * Motor-control interfaces * Encoder interface * Servo interface * Sensor inputs * Limit-switch inputs * Emergency-stop input * Current/voltage monitoring...

I’m consolidating an existing prototype into a single industrial-grade PCB that hosts an ESP32 module for wireless connectivity and an ATmega328 for deterministic tasks. The board’s main job is high-accuracy sensor data collection, but it must also drive several stepper motors, so clean analogue front-ends and rock-solid power electronics need to live happily beside 24 V motor drivers. Scope • Schematic capture that merges the two MCUs, level-shifting and all necessary isolation between the low-noise sensor domain and the higher-current motor domain. • PCB layout ready for fabrication: four-layer minimum, controlled impedance where appropriate, wide creepage on the power stage, and industrial connectors (Phoenix-style) for field wiring. • Int...

...clean code, and demonstrable logic that meld everything into a smooth UX. Deliverables 1. Source code with clear documentation and build/run instructions 2. A runnable demo (APK, executable, or Web build) that proves indoor & outdoor navigation on my test routes 3. API or module descriptions so more features can be plugged in later 4. A short technical report explaining algorithms chosen, sensor fusion method, and latency/accuracy benchmarks Acceptance criteria • Navigation prompts stay under 1 s latency and within 2 m positional error outdoors, 1 m indoors • Obstacle alerts trigger at least 95 % of the time in my test scenarios • Audio and haptic feedback are never delivered simultaneously in a way that confuses the user • Full offline o...

... your proposal MUST start with the exact phrase: HARDWARE-EXPERT --- PROJECT CONTEXT --- We are developing, an industrial-grade, 4-layer ESP32-S3 electronic system designed for continuous 24/7 outdoor operation (-10°C to +65°C ambient, up to 95% RH). NOTE: The schematic architecture and initial KiCad layout already exist (~80% complete). This project is strictly for schematic audit, protection/sensor circuit integration, PDN electrical simulation, 4-layer PCB optimization, 3D CFD thermal validation, and generation of a zero-error production release package. --- SCOPE OF WORK & DELIVERABLES --- ■ Milestone 1: Schematic Audit, Protection Sub-circuits & Electrical/PDN Simulation ($20) 1. Schematic Audit & Component Engineering: • Complete audit of existing K...

I need a complete PCB created from the ground up. Starting with my functional requirements, you’ll take the project through schematic capture, component selection, board layout, and all manufacturing outputs.