Sensor intergration jobs
...connectivity, pull motion data from the PAA5100JE, and give me software control of several GPIOs so I can drive LEDs and switch power to an additional sensor on command. Here’s what I need from you: • An advised pin map and any level-shifting guidance for a clean, noise-free hardware hookup. • Well-structured firmware (PlatformIO or Arduino-IDE friendly) that: – Initializes the PAA5100JE and streams its measurements at a steady rate. – Publishes those readings over Wi-Fi—MQTT, HTTP, or WebSocket is fine, as long as it’s fast to implement and stable. – Exposes simple commands or a REST endpoint to toggle GPIOs for the LEDs and sensor power rail. • Clear documentation so I can reproduce the build, flash the ...
...gas burners so I can switch energy sources as required. From dough portioning and pressing to cooking, puffing, and neatly stacking, every step should run hands-free once ingredients are loaded. To keep the budget realistic, I’m open to clever use of off-the-shelf components, 3-D-printed parts, recycled food-grade stainless, or low-cost electronics such as Arduino or Raspberry Pi for control and sensor feedback. Just make sure anything in contact with the dough is food safe, easy to clean, and remains rigid over time. Deliverables I expect: • CAD drawings with assembly instructions • A complete bill of materials showing per-item cost and total staying below ₹10,000 • Control schematics and firmware source code • A short demonstration video of the...
...vs Expected Generation Energy Loss Inverter Efficiency Irradiance Active Alarm Count Plant Health Score Calculations should be available at relevant hierarchy levels: Enterprise → Portfolio → Plant → Block → Inverter Alarm Engine Develop configurable rules for situations including: Inverter offline Low generation Underperformance Communication failure High temperature Grid outage Irradiance sensor failure Meter mismatch Persistent alarm Missing telemetry Alarm records should support: Severity Asset Start time End time Status Acknowledgement Comments Assigned user Root-cause category Associated work order Scope Develop KPI calculation services. Develop configurable alarm rules. Implement hierarchy-level aggregation. Create APIs for frontend dashboards. D...
...Telemetry → Aggregation → TwinPro API Deliverables Milestone 1: Telemetry architecture + tag model Milestone 2: Data ingestion API/MQTT service Milestone 3: Time-series database implementation Milestone 4: Solar SCADA simulator Milestone 5: Aggregated/historical-data APIs + documentation Important Requirement The solution must be device-independent. We should be able to add new inverter or sensor manufacturers by configuration rather than rewriting the complete ingestion service. What to Include in Your Bid Please explain: Previous IoT/SCADA projects Experience with MQTT/Modbus Recommended time-series database How you would handle missing SCADA values Whether you have worked with renewable-energy data Start your bid with “TWINPRO SCADA”. Preferred S...
I need a lightweight Android app that can take data about an approaching chicken—distance, speed, or any other sensor input we decide on—and instantly predict the safest time for it to cross a road. The prediction should be shown on-screen in simple, clear language so a farmer or handler can act without hesitation. Core requirement • Predict road-crossing times in real time for a single or multiple chickens. I do not need location tracking or intersection alerts in this phase; the entire focus is on accurate, fast predictions and an intuitive user interface. Preferred approach You are free to work with native Android (Java or Kotlin) or a well-supported cross-platform stack such as Flutter or React Native as long as the final build runs smoothly on current An...
... We don't want a busy design. Something that stands out while not going over the top. Scope • Coverage: Sides and back only—no roof, bonnet, or front quarter panels. • Style: Minimal, not busy; it should look like factory equipment rather than advertising clutter. • Colours: Draw from the palette on so the wrap feels at home beside the website and our sensor hardware. Deliverables 1. Using the attached .eps template, three print-ready vector layouts (driver side, passenger side, tailgate) in .eps with 1:10 scale, bleed, and cut lines. 2. High-resolution PNG/JPG mock-ups on a similarly coloured pickup for internal review. 3. A short style sheet listing exact colour codes and the fonts used, so we can keep future units consistent. A...
IoT Cloud Solution Requirement We have developed a custom PCB-based IoT device consisting of an ESP32 microcontroller, an EC200 GSM (4G) module, an SCD30 sensor for measuring CO₂, temperature, and humidity, and a 5-inch display that shows these sensor readings in real time. We require a complete cloud-based IoT solution for approximately 100 deployed devices. Each device should securely transmit its sensor data to the cloud over the GSM network. The cloud platform should store the data, provide APIs for a mobile application, and support a Grafana dashboard for real-time monitoring and historical analysis. The solution should include secure device communication (MQTT or HTTPS), cloud data storage, user authentication, device management, real-time dashboards, historic...
LOOP every ~2 seconds, for each burner sensor independently: 1. Read current temperature from sensor 2. Add reading to a rolling 15-20 second window of recent readings 3. Compute rate of change over that window 4. IF temperature has plateaued (stayed within ~±2°C band) AND plateau duration > 10-15 seconds AND temperature >= 90°C: -> Trigger "BOILING LIQUID" alert - Sound buzzer: 3 short beeps - Send Blynk push notification: "Burner X approaching boil" - Enter cooldown state for this burner (~2 min, suppress repeat alerts) 5. ELSE IF temperature keeps climbing past ~120°C without plateauing: -> Trigger "DRY PAN / FIRE RISK" alert - Sound buz...
...BLE) ●GSM + GNSS + sensor integration plan ●Final 4-layer PCB layout (controlled impedance) ●PCB stack-up definition ●BOM with alternates & footprint expectations ●Power IC replacement strategy document ●RF matching networks included ●3D PCB model 2.2 Manufacturing Files (Final) - COMPLETED ●Gerber files ●Drill files ●Pick & Place ●Assembly files PCB layout source files (Altium) 3. Scope of Work - Phase 2 — Firmware Development Tasks: ●Implement sensor drivers (IMU, PPG, Temperature, GNSS) ●BLE GATT services using JSON-based packets ●Battery monitoring and basic power management ●Sleep / wake-up logic ●SIM7000G LTE data transmission ●Sensor + GNSS scheduling and fusion logic Deliverables: ●Firmware source code (C/C++) ●BLE GATT / UART JSON protoc...
...a hands-on mentor for the hardware and coding side, not just a builder — someone who will walk us through each step and explain it, since we're complete beginners in this specific area. Phase 1 scope (this posting): Guide us through wiring a basic glove prototype: flex sensors + IMU connected to a microcontroller (Arduino/ESP32 or your recommendation) Get the hardware reading clean, reliable sensor data Basic coding to turn that raw data into recognised output for a small set of signs (a handful of Arabic Sign Language letters/words as a starting vocabulary) Teach us why each step works as we go What we're looking for: Electrical/embedded systems engineer experienced with wearable sensors and microcontrollers Comfortable with regular video calls (Zoom or your ...
...workflow—from order acceptance through hand-off at the customer’s balcony or doorstep—needs to be automated, safe and fully traceable. Core functionality I need you to build, integrate and prove in a field test: • Real-time tracking visible on a web or mobile dashboard • Automated navigation that plans optimal routes while respecting geofencing rules • Accurate payload drop-off confirmation (photo, sensor log or both) • Reliable no-fly-zone detection with instant rerouting Please design the flight-control stack, ground control interface and user-side tracking module, then link everything with a secure API that can plug into a typical food-ordering app. End-to-end logs (flight path, battery status, payload status) should be exported i...
...matters most is that the entire path from sensor to cloud is proven and robust. You are free to suggest the specific humidity sensor, the firmware language (Arduino, MicroPython, C, etc.), and the best authentication method for GCP, as long as you keep power consumption modest and the solution easy to reproduce. Please highlight your relevant experience creating similar data-logging or IoT pipelines; that is the single factor I will weigh when selecting a freelancer. Deliverables • Bill of materials with part numbers and estimated cost • Fully commented source code / firmware ready to flash • Step-by-step instructions (or scripts) to provision the GCP resources and verify data arrival • Brief usage guide explaining how to calibrate the sens...
I need a working prototype that lets me monitor a single-car residential parking spot without running any wiring. The concept is simple: • Hardware: a custom ESP32 board that combines LoRa radio, BLE, and a low-power magnetic (Hall-effect) sensor. It will spend almost all of its life in deep-sleep on two AA batteries and wake only when a car enters, exits, or moves. On every wake-up it must stamp the event with time, append the car’s BLE ID, and shoot that packet over LoRa. • Gateway: a battery-operated LoRa gateway that forwards incoming packets to my home Wi-Fi and then to a mobile or web endpoint of my choice (MQTT, REST, or similar). The key technical goals are extreme power efficiency, reliable car-only detection, and end-to-end message delivery you can demon...
...sensors and automatically send an SMS notification to my phone whenever either reed switch changes state or the measured current exceeds or falls below configurable threshold values. The firmware should be developed for Particle Device OS and include cellular SMS functionality. Each alert message should report the current status of both reed switches, the real-time current measurement from the CT sensor, and the exact timestamp when the event occurred. I would also appreciate assistance in determining and configuring appropriate threshold values for both the reed switch logic and the current monitoring to ensure reliable operation. As part of the deliverables, I need a clear wiring diagram, well-commented source code ready for deployment, and a brief setup guide explaining wher...
...an experienced hardware/embedded engineer to build a first working prototype of a wearable sensor vest for athlete movement and heart rate monitoring. Scope: Sensor 1: GPS + 9-axis IMU (accelerometer, gyroscope, magnetometer) — for speed, distance, direction, and position tracking Sensor 2: Heart rate sensing — open to your recommendation on approach (optical/PPG vs. ECG) for a first prototype, given the vest will be used during physical activity/sport Data transmission: BLE to a nearby tablet/laptop Physical form: lightweight vest/garment insert, worn on the back, under 150g target, minimum 3-4 hour battery life, sweat-resistant What I need from you: Schematic + PCB design Firmware for both sensor sets A basic enclosure (3D printed is fine for...
Developer to help us build a Visual Positioning System (VPS) for UAVs and drones. The initial prototype will be developed using NVIDIA Jetson Nano + Camera, with the goal of creating a robust visual navigation system for challenging GPS/GNSS environments. Required Skills * Python / C++ * OpenCV * Computer Vision * NVIDIA Jetson Nano * Optical Flow * Visual-Inertial Odometry (VIO) * SLAM * IMU / Sensor Fusion * ArduPilot / PX4 * MAVLink * UAV / Drone Systems * Linux / Embedded Systems Project Scope * Camera-based visual positioning * Optical Flow implementation * Camera + IMU fusion * VIO development * Real-time position and velocity estimation * ArduPilot / PX4 integration * MAVLink communication * GPS-denied navigation * Performance optimization on Jetson Nano * Testing an...
...visualization, so deep experience with Esri ArcGIS — and an up-to-date ArcGIS certification to prove it — is essential. Scope of work The project starts with cleaning and organising sensor-derived geospatial data, building a solid geodatabase where needed, and then designing map products that communicate patterns at a glance. Think thematic maps, interactive web layers and printable layouts that decision-makers can digest quickly. Because most of the insight must be drawn visually, cartographic finesse and a good handle on symbology, annotation and scale-dependent rendering are all important. I will supply: • the raw sensor files (shapefiles, CSVs with coordinates, and a small GeoTIFF set) • an outline of the key questions we’re trying t...
...layer before transmission. Ensure end-to-end data integrity from hardware sensor acquisition to cloud ingest, protecting against spoofing, replay attacks, and man-in-the-middle (MitM) tampering. 2. Ingestion & Immutable Ledger Pipeline Architect and deploy low-latency, scalable ingestion pipelines capable of receiving streaming time-series data, event triggers, and sensor metrics from field devices. Design and implement a tamper-proof, immutable ledger (utilizing cryptographic Merkle trees, append-only distributed databases, or lightweight ledger/blockchain protocols) to guarantee data auditability and permanence. Establish secure tokenization/credit generation logic or verifiable proof mechanisms driven by sensor events and threshold compliance. 3. Systems...
...embedded system that will sit inside a vehicle (horn-relay) and act as the central hub for sensor integration and data acquisition. The core of the job is full-cycle design and development: selecting the right MCU family, creating the schematic and PCB layout, writing the firmware, and validating that the board reliably collects, timestamps, and streams data from the relay connectivity Hands-on experience in both embedded C/C++ and practical electrical or automotive environments is essential because the design must stand up to temperature, vibration, and EMI constraints found in vehicles. Familiarity with CAN, LIN, or similar in-vehicle networks is a plus; the final board will need to forward selected sensor packets to the main ECU. Deliverables • Complete hardware ...
...exposes measurements via UART or SPI (existing MCU is ARM-based C/C++) • Clear calibration and verification procedure that site managers can execute without lab equipment Deliverables 1. Sensor selection report or custom schematic with BOM 2. Firmware stack with commented source and build instructions 3. Mechanical mounting guide tailored to steel studs, concrete formwork and tripod setups 4. Test results proving millimeter accuracy indoors and outdoors (raw data + analysis notebook) 5. Final integration manual and on-site commissioning checklist Acceptance criteria The integrated sensor must repeatedly measure known targets from 0.5 m to 30 m with ≤ ±2 mm error in daylight and warehouse lighting, and must boot, read and report within 250 ms ...
...• Launch, config, and calibration files specific to this sensor pair • Clean MAVROS topic bridge so the flight controller receives continuous, filtered pose updates • Step-by-step documentation plus a repeatable test procedure; include a sample rosbag proving the accuracy target inside a mock boiler environment Acceptance criteria • ≤ 5 cm cumulative drift over 10 minutes of continuous movement inside a boiler • CPU load below 70 % on the Xavier NX during operation • Code builds with colcon, uses only standard ROS 2 dependencies, and runs headless You are free to base the solution on FAST-LIO2, LOAM, RTAB-Map, or a custom EKF/UKF—just explain your choice and show how it meets the accuracy requirement. Share any sensor s...
...stores the current lap, previous lap, and best lap in memory • Real-time display of those three values on a 16×2 (or comparable) LCD; the screen should auto-update as each new lap registers • Simple push-button reset to clear the session without rebooting the board Deliverables: 1. Clean, well-commented Arduino sketch (.ino) ready to upload 2. Minimal wiring diagram showing the Arduino, chosen sensor, LCD, and reset button 3. Short parts list so I can source identical components locally 4. Quick-start guide that walks me through calibration and testing at the track I will test the build by running ten consecutive laps; the system must not miss or double-count any trigger and must display each time within one second of passing the line to be accepted....
...the current lap, previous lap, and best lap in memory • Real-time display of those three values on a 16×2 (or comparable) LCD; the screen should auto-update as each new lap registers • Simple push-button reset to clear the session without rebooting the board Deliverables: 1. Clean, well-commented Arduino sketch (.ino) ready to upload 2. Minimal wiring diagram showing the Arduino, chosen sensor, LCD, and reset button 3. Short parts list so I can source identical components locally 4. Quick-start guide that walks me through calibration and testing at the track I will test the build by running ten consecutive laps; the system must not miss or double-count any trigger and must display each time within one second of passing the line to be accepted....
...fabricate, and bring-up custom PCBAs that drive a control system while cleanly interfacing with three sensor classes—temperature sensors, motion detectors, and cameras. Form factor, power budget, and component selection all matter in this build; I already have target size dimensions, allowable power envelope, and a shortlist of preferred parts that we will refine together. Once we lock the architecture you will prepare the complete design package, handle a short prototype run, and validate the hardware with the sensors hooked up. Deliverables • Schematics and PCB layout files • Manufacturing outputs (Gerber, drill, pick-and-place, tested BOM) • Assembled and first-article-tested boards • Sensor integration report confirming stable operation with...
...fabricate, and bring-up custom PCBAs that drive a control system while cleanly interfacing with three sensor classes—temperature sensors, motion detectors, and cameras. Form factor, power budget, and component selection all matter in this build; I already have target size dimensions, allowable power envelope, and a shortlist of preferred parts that we will refine together. Once we lock the architecture you will prepare the complete design package, handle a short prototype run, and validate the hardware with the sensors hooked up. Deliverables • Schematics and PCB layout files • Manufacturing outputs (Gerber, drill, pick-and-place, tested BOM) • Assembled and first-article-tested boards • Sensor integration report confirming stable operat...
I’m looking for a complete design-and-build solution for a smart dispenser that can handle dry food, wet food, and a variety of home-cleaning products in a commercial environment. The core requirement is an automatic sensor-based mechanism that lets customers select and fill exactly the quantity they need, reducing waste while streamlining self-service. Functionally, the unit should: • Recognise a container placed beneath the spout, trigger dispensing automatically, and stop precisely at the chosen weight or volume. • Keep wet and dry chambers fully sealed to avoid cross-contamination, odour transfer, or moisture ingress. • Be robust enough for daily public use—think stainless steel or food-grade polymers that are easy to wipe down and resistant to ...
...• Launch, config, and calibration files specific to this sensor pair • Clean MAVROS topic bridge so the flight controller receives continuous, filtered pose updates • Step-by-step documentation plus a repeatable test procedure; include a sample rosbag proving the accuracy target inside a mock boiler environment Acceptance criteria • ≤ 5 cm cumulative drift over 10 minutes of continuous movement inside a boiler • CPU load below 70 % on the Xavier NX during operation • Code builds with colcon, uses only standard ROS 2 dependencies, and runs headless You are free to base the solution on FAST-LIO2, LOAM, RTAB-Map, or a custom EKF/UKF—just explain your choice and show how it meets the accuracy requirement. Share any sensor s...
...defined the core user experience for Gap Gauge—a club-mounted, Bluetooth-enabled sensor that pairs with a companion mobile app to help golfers dial in wedge shots under 100 yards. The software roadmap is clear, but the next big milestone is turning the hardware concept into a reliable, production-ready prototype. Here is where I need the most support: • Sensor hardware development – schematic, proof-of-concept build. The unit must sit unobtrusively on the shaft or golf glove, survive repeated swings, and stream swing-path data in real time over Bluetooth Low Energy. The embedded side will revolve around a high-accuracy IMU; I do not yet have a preferred model, so I’m looking for guidance on the best sensor. On the software side the mobile ...
...engine parameters; the other carries generator status and electrical load data. The program needs to read, display, and where appropriate act on that information (alarms, shutdowns, load shedding, etc.). Control logic Write all PLC logic necessary to start, stop, and protect the genset, handle input/output interlocks, and manage fail-safe states. Electrical knowledge is essential so that trips, sensor scaling, and safety chains are implemented correctly. Deliverables 1. Compiled CodeSYS project file for the HED 713 2. All graphic assets and symbol libraries used 3. Basic operating manual or inline comments explaining configuration steps Please include a sample of previous CodeSYS or HED work when you respond. I will pay hourly and agree final terms once I’ve re...
...knowledgeable crop-management professional to help me get the most out of my current drip irrigation set-up. The goal is to fine-tune scheduling, flow rates, and moisture monitoring so the plants receive exactly what they need without wasting water or nutrients. You’ll start by reviewing the field layout, crop type, existing emitters, and pump capacity that I’ll share through maps, photos, and sensor logs. From there, I’d like clear, step-by-step recommendations on: • Ideal irrigation intervals and run-times for each growth stage • Adjustments for seasonal weather swings and soil texture variations • Practical ways to detect and prevent clogging, pressure loss, or uneven distribution • Any affordable hardware or software upgrades&mdas...
I have an Excel file that contains several years of air-quality readings for multiple locations and I’d like to turn it into a small cross-platform app built with Flutter. The core focus is historical data analysis—no live sensor feeds for now—so the app should read the imported dataset, store it in an AWS-based backend that you set up, and let users explore the information through clear graphs and charts. Here’s what the first release needs to achieve: • Import pipeline: take the Excel sheet I provide, parse it, and load it into an AWS data store of your choice (RDS, DynamoDB, or S3 + Athena all work; pick what best fits Flutter and cost considerations). • API layer: expose endpoints that supply the front-end with trend data over time and compa...
...MCU-temperature monitoring Inputs The board will include protected automotive inputs such as: 12 V ignition/wake input 12 V brake input Ground-switched handbrake input 0–5 V throttle input 0–5 V pressure or boost input Multipurpose analog input One or two multipurpose vehicle-speed inputs Hall, open-collector, VSS and suitable ABS-type sensor support Two spare 12 V-rated inputs Software-selectable pull-up and pull-down where practical Protected 5 V sensor supply and dedicated sensor ground Outputs At least six protected outputs are required, including: Protected 12 V high-side brake output Protected low-side park output Protected relay-coil output Multiple PWM-capable outputs Optional direct control of a 2–3 A automotive valve Safe hardware def...
I’m looking for a complete design-and-build solution for a smart dispenser that can handle dry food, wet food, and a variety of home-cleaning products in a commercial environment. The core requirement is an automatic sensor-based mechanism that lets customers select and fill exactly the quantity they need, reducing waste while streamlining self-service. Functionally, the unit should: • Recognise a container placed beneath the spout, trigger dispensing automatically, and stop precisely at the chosen weight or volume. • Keep wet and dry chambers fully sealed to avoid cross-contamination, odour transfer, or moisture ingress. • Be robust enough for daily public use—think stainless steel or food-grade polymers that are easy to wipe down and resistant to ...
Build an ai communication software with a built in knowledge base to allow email conversation between clients and customers with chatgpt intergration.
...Enclosure Design for Industrial IoT Wireless Sensor Node (IP67, Magnetic/Epoxy Mount) Project Description: Looking for an experienced mechanical/product designer to design a rugged industrial enclosure for a compact wireless sensor node used in industrial environments. Two variants from one base design: Permanently installed node — magnetic or epoxy mount Handheld version — ergonomic grip, panel-mount connector on enclosure wall PCB: 40×36mm Target enclosure: ≤60×60mm footprint, minimal height Mechanical requirements: IP67 rated (dust-tight, 1m immersion) Mounting options: — Epoxy mount (flat base) — Magnetic mount — N52 pot magnet, min 50N pull, either integrated or detachable magnetic base addon (like a snap-on magnetic...
I ...but flexible) • Web/Tablet dashboard with real-time graphs, rule engine, and secure player profiles • Dispenser micro-controller code plus a small test harness that proves dosing accuracy ±1 % • Build scripts, reproducible environments, and concise hand-off docs Acceptance criteria • Zero packet loss for at least 90 min of continuous play across 20 active units • Dashboard latency from sensor read to on-screen recommendation ≤2 s • Dispenser delivers target ratio within ±1 % on a 500 mL bottle, verified over 30 cycles Please attach a detailed project proposal that walks through architecture, component choices, and an estimated timeline with milestones. Past work and general experience are helpful, but the proposal its...
...design guidelines. 5. Global Satellite Messaging: o Swarm M138 Transceiver Breakout (SPX-20107). Interfaces via simple logic-level UART. 6. Low-Power Display: o Adafruit 4778 (FeatherWing 2.9" Tri-Color ePaper Display using the SSD1680 driver over SPI). 7. Sensors: o ADXL366BCCZ / ADXL362BCCZ (Nanopower SPI Accelerometers for motion wake-up triggers). o MAX30205MTA+ (I2C human body temperature sensor, requiring careful thermal isolation from heat-generating components). 8. Power & Wireless Charging Infrastructure: o BQ51013BRHLT Qi Wireless Power Receiver IC paired with a Vishay IWAS3827 receiver coil. o BQ24040DSQT 800mA Linear Li-Ion Battery Charger to safely manage a 3.7V 2000mAh Li-Polymer battery. o TPS62170QDSGTQ1 Buck Regulator for high-efficiency system-wide step...
I need an electrical prototype for residential use focused on monitoring and control. The essential components for this prototype include: - Sensors: To gather data on various electrical parameters. - Microcontrollers: For processing the sensor data and executing control commands. - Communication Modules: To transmit data to a central system or app. Ideal Skills and Experience: - Experience in developing electrical prototypes, especially for residential applications. - Proficiency in working with sensors, microcontrollers, and communication modules. - Strong background in monitoring and control systems. - Knowledge in integrating these components into a cohesive and functional prototype. Looking forward to your expertise in bringing this project to life!
...the Maricá/Itaipuacu area will be essential. If you already have a network of painters, locksmiths, or security specialists, please highlight that when you respond. Deliverables will be accepted once the locks are replaced and functioning with new keys provided to me, the paint job shows uniform coverage with no peeling or overspray, and the agreed safety measures (e.g., reinforced padlocks or sensor lights) are installed and tested. I’m ready to review your plan of action and timeline straight away....
...outdoor Water ATM that dispenses purified water hands-free through a sensor-based outlet. The unit must accept cash as well as online payments: coins or notes through a secure validator plus instant wallet/card options integrated via QR or NFC. The system will be installed entirely outdoors, so weather-proof cabinetry, sunlight-readable status indicators and tamper resistance are essential. Hygiene is equally important; the sensor should trigger flow without users touching any surface, and the plumbing must support periodic auto-flushing and easy filter replacement. Core expectations • Mechanical drawings and enclosure design suitable for manufacturing • Electronics schematics, PCB layout and firmware that handle the sensor trigger, flow metering, ...
...knowledgeable crop-management professional to help me get the most out of my current drip irrigation set-up. The goal is to fine-tune scheduling, flow rates, and moisture monitoring so the plants receive exactly what they need without wasting water or nutrients. You’ll start by reviewing the field layout, crop type, existing emitters, and pump capacity that I’ll share through maps, photos, and sensor logs. From there, I’d like clear, step-by-step recommendations on: • Ideal irrigation intervals and run-times for each growth stage • Adjustments for seasonal weather swings and soil texture variations • Practical ways to detect and prevent clogging, pressure loss, or uneven distribution • Any affordable hardware or software upgrades&mdas...
We are a health technology company building a wireless, non-wearable fall detection sensor for elderly people. The sensor streams event and vitals data continuously to our cloud. When someone falls, the alert must reach a monitoring centre in seconds. Missed events end careers. If that framing makes you nervous, stop reading. If it makes you interested, continue. We are scaling from hundreds of devices to several thousand this year, with enterprise customers across the US, UK, Canada and Australia. We have a small in-house engineering team and multiple partner API integrations running in parallel. We need a senior technical voice reviewing what gets built and keeping delivery honest. WHAT YOU WILL DO - Review every pull request before merge. You are the merge gate. - Run a ...
I am moving forward with a dedicated women-safety smartwatch and need a specialist who can turn the concept into a working prototype. The core capabilities I must see right out of the box are: ...a single button and have the SOS alert, live location, and audio-video feed sent automatically. • View the wearer’s position on a companion mobile or web interface. • Receive basic vitals (heart rate, steps, etc.) without noticeable battery drain. • Place an immediate call to pre-set emergency numbers directly from the watch. Please outline the microcontroller or SoC you’d suggest, the sensor stack, and any licensing needs for embedded software. If you have previous PCB layouts or enclosure designs that demonstrate similar integrations, feel free to refer...
...the screen I only have to show two things: plain textual messages and live sensor readings as they arrive, presented in a clear, refresh-friendly layout. Everything must be written in clean, non-blocking, well-commented code so future maintenance is painless. I typically work with the ESP-IDF toolchain and prefer an event-driven style (FreeRTOS tasks, timers, queues)—feel free to suggest alternatives if you can keep the execution just as responsive. For the UI, a lightweight graphics library such as LVGL or TFT_eSPI that supports real-time updates will suit the project best. Deliverables • Full source code for the ESP32-C3 firmware, ready to compile • Touchscreen UI code that displays textual data and real-time sensor values • Inline documentatio...
...selection (Arduino, Raspberry Pi, or your preferred MCU), motor drivers, Li-ion power system, safety cut-offs. • Firmware & control software: motion routines, basic sensor-based interaction (ultrasonic or camera vision for proximity), and a USB/Bluetooth interface for future updates. • Prototype assembly: sourcing parts, 3-D printing or light CNC where needed, complete bench testing, and a short demo video that proves mobility and interaction. Acceptance criteria 1. Robot rolls or walks smoothly on flat indoor surfaces. 2. Executes at least three distinct “show” motions triggered by a button press or distance sensor. 3. Operates 60 min minimum on a single charge without overheating. 4. All CAD files, schematics, BOM, and commented cod...
...accurately dimensioned 2D vector/DXF file. I already have a working prototype, but the positional accuracy is not good enough yet. Current prototype The current system uses: PAA5100JE optical-flow sensor BNO08X IMU ESP32-C3 for sensor processing ESP32-2432S028R touchscreen board MicroSD storage Battery-powered handheld housing Firmware that records X/Y movement and creates vector data The biggest current problem is that the PAA5100JE does not track consistently when looking directly at different surfaces without a ball. Surface texture, reflections, sensor height, pen tilt, pen rotation, sensor-to-tip offset, and accumulated drift can all cause dimensional errors. I am not only looking for somebody to rewrite the current firmware. I need experienced eng...
...16AWG wires (Minimum ~5x5mm exposed copper). Battery input pads must be exceptionally large, preferably mirrored on both Top and Bottom layers and heavily stitched with vias, to support 10AWG / 12AWG wire. 5. CONNECTOR PINOUT (8-Pin JST-SH 1.0mm) Place the connector near the edge of the board, away from the BATT+ input to minimize noise. V_BATT (Battery voltage to FC) GND CURR (Analog current sensor output from INA) TELEM (ESC Telemetry - ESC TX to FC RX) M1 (DShot Channel 1) M2 (DShot Channel 2) M3 (DShot Channel 3) M4 (DShot Channel 4) 6. DELIVERABLES REQUIRED FROM FREELANCER Upon completion, the layout engineer must provide: Native Source Files (Altium, KiCad, or EasyEDA format). Gerber Files (RS-274X or X2 format) including Drill files. BOM (Bill of Materials)...
ETOGO Property Twin Engine™ — Developer Brief Product objective Build one shared Property Twin Engine that converts property scans, plans, inspection evidence, records and live sensor data into a true-to-life, navigable, interactive and time-aware representation of an entire property. The 3D model is only the spatial container. The actual product is the governed relationship between: Property → Building → Floor → Unit/Common Area → Space → Zone → System → Sub-System → Component → Finding → Evidence → Deliverable → Work Order → Verified Property Fact → Stewardship Record The Engine must preserve and show how a property changes over time. Product configuration The Engine must support t...
