Sensor intergration jobs

...syringe with motor and sensor setup (it isn’t a Novint Falcon or SensAble Phantom). The freelancer will handle everything from motor design, sensor integration to development. I also need all source code to translate depth in the mesh into force cues in real time. A simple calibration panel and a plain-text file where I can later tweak force curves will make life easier for both of us. Deliverables within two weeks of project start: • Full project source and build files (Unity, Unreal, or native C++/OpenGL—choose what gets you there fastest) • 3D assets representing the tissue layers with realistic textures applied • Live haptic integration tied to depth in each layer • A concise read-me covering build steps and where to edit force tables &...

I need an existing motion sensor prototype miniaturized to a 2.5x1.5x0.8 inch package. Requirements: - Reduce size of circuit board, casing, and power supply as needed - Maintain functionality and performance Ideal Skills: - Experience with electronics miniaturization - Proficiency in working with motion sensor circuits - Strong background in PCB design and integration

The project involves developing a machine learning pipeline for Remaining Useful Life (RUL) prediction using the NASA C-MAPSS dataset. The work will cover data preprocessing and basic exploratory data analysis to understand sensor behavior and engine degradation patterns. Rolling and derived features will be created to improve model performance, followed by an engine-wise train/test split to ensure proper evaluation. A Linear Regression model will be implemented as a baseline, along with a Random Forest or XGBoost model for improved prediction performance. Models will be evaluated using MAE and RMSE, with basic RUL-focused error analysis to understand prediction accuracy. The final deliverable will be a clean, well-structured GitHub-ready project, including source code, analysis, re...

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. ...

...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, LoRa, FreeRTOS, CAN, BLE/Wi-Fi and industrial IoT experience. Engagement: Project-based initially, with possibility of long-term collaboration. We are specifically looking for someone who is hand...

I run my smart-home on an ioBroker installation (free Cloud subscription) and now need a sleek modern VIS dashboard that is easy to expand later on. The interface must show real-time status updates and let me actively control the different devices (e.g. lights, thermostats, energy, security). You’re free ...when commands are sent back. Responsive behaviour for both wall-mounted tablets and mobile phones is important. Deliverables • Complete VIS project file(s) ready to import into ioBroker • Custom widgets or scripts (if needed) with clear comments • A brief read-me outlining any required adapters and where to map each data point I’ll consider the job done once I can load the project, see live sensor values changing without delay, and toggle every s...

I have a high-resolution TIF portrait that needs a high-quality, subtle polish while preserving its original atmosphere. The face should remain realistic: I only want the gentle removal of sensor noise and a light softening of wrinkles so the skin looks healthy and freshly shaven—nothing that feels airbrushed. Please shift the currently black eye to a tasteful blue; it must blend organically with the existing lighting. The neck may be smoothed just a touch, and I’d like the suit hinted at—only a whisper more visible—without altering the global light or contrast. On the piano, a discreet, believable reflection of the hand would enhance the composition. Darken the keys ever so slightly to evoke candlelight, and recolor the small felt strips at their ends ...

XK300 Essence — 3D model and render asset pack (product visualisation) We manufacture the XK300 Essence, a small wall-mounted contactless health monitoring sensor. We need a clean 3D model of it and a reusable library of transparent-background renders, so our team can drop the product into any photograph or scene in future without re-hiring for each image. This is an asset-creation job, not a one-off picture. What we will supply The product CAD (STEP or IGES). If we cannot release CAD, we will supply official product renders from four angles plus a dimensioned drawing, and you model from those. Official reference renders showing the exact material, finish and surface mark. Confirmed real dimensions: circular face 95 mm across, 45 mm deep at the thickest point. Deliverable A ...

...Package: Full Gerber files, Drill files, Pick & Place (CPL), and assembly drawings. 3D STEP model of the populated board for MCAD integration (Siemens NX). Required Skills: Proven experience with high-density multi-layer PCB layout (Altium Designer, KiCad, or similar ECAD). Expertise in RF/High-speed signal integrity, mixed-signal layout, and noise mitigation for IMU/sensor boards. Solid background in switching power supply (DC-DC buck regulator) layout best practices. When applying, please share examples or portfolio renders of high-density or flight-controller-style PCBs you have laid out....

...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&t...

...live-view where we can check camera feeds and recent alerts remotely Be built in a way that can scale from one pilot site to multiple sites later This is a first pilot build — we want something working and reliable rather than over-engineered. Please propose your recommended tech stack (cameras, AI model/service, hosting, alerting method) as part of your bid, and break your price into phases: Camera/sensor integration + live feed AI detection layer (person/vehicle/animal classification) Alerting + dashboard Ideal freelancer: experience with computer vision (e.g. OpenCV, YOLO, or similar), IoT/camera integration, and comfortable working with a non-technical client to explain trade-offs (cost vs. accuracy vs. complexity). We're a small UK-based team moving from tradi...

...and fabrication release. The review ensures process safety, fluid mechanics integrity, correct sensor positioning, functional control logic representation, and alignment with ISA-5.1 drafting standards. 2. Scope of Work & Review Tasks Process & Mechanical Validation: Verify line sizing, flow direction, fluid velocity limits, and material compatibility for piping, tubing, seals, and valving. Validate pump suction/discharge arrangements, check valve locations, back-pressure regulators, manual isolation boundaries, and sample/drain points. Confirm over-pressure and thermal expansion relief mechanisms, vacuum abatement, and system purge connections. Instrumentation & Controls (I&C): Review sensor selection and positioning (e.g., inline chemical concentra...

I need a complete solution that pinpoints abnormal behaviour across my wireless sensor network. You will have direct access to three rich data streams—raw sensor readings, detailed network-traffic captures, and accompanying environmental context—so the approach can fuse information rather than relying on a single source. Your job is to design, implement, and validate an anomaly-detection model that flags faulty nodes, suspicious traffic, or out-of-range measurements in near-real time. Feel free to select the technique that best fits the data volume and complexity; I am open to statistical, classic machine-learning, or deep-learning pipelines as long as the final system is transparent and reproducible. Python (NumPy, Pandas, Scikit-Learn, TensorFlow/PyTorch) is ...

...Scope of work • Schematic capture and multilayer PCB layout, including antenna matching and power-supply conditioning for the GSM current peaks. • Firmware that handles sensor polling, on-board data processing, and a simple AT-command stack to manage the modem. I prefer clean, well-documented C/C++—an RTOS is fine if it keeps timing tight. • Complete manufacturing files: Gerbers, BOM with sourcing options, and assembly drawings. • A first-article test plan so I can verify that the sensors read correctly, the GSM link registers reliably, and the board survives brown-outs. Acceptance criteria 1. All three sensor types register within ±2 % of reference readings during bench tests. 2. A remote SMS command reliably toggles an outp...

...Manufacture-Ready Rigid Shell + Silicone Overmold Overview We have a working 3D-printed (PLA) prototype of a small electronics case with an internal sliding compartment, custom PCB, embedded magnet, and Hall-effect sensor. We need a mechanical/product design engineer to redesign it into a manufacture-ready rigid shell with a silicone overmold, and deliver a finished, consumer-presentable prototype for user testing. What we need done Redesign for manufacturing (DFM): Convert the existing case into mold-ready CAD — a rigid inner shell housing the PCB, battery, magnet, and sensor, and forming the sliding compartment mechanism, plus a silicone overmold over the exterior for grip, shock absorption, and water resistance (leaving the moving compartment free of overmold)...

...network of surveillance cameras that record to an on-site NVR. The building is already roughed-in with conduit runs but no cabling. You will supply and pull the appropriate alarm cable, terminate it cleanly at the control panel, install door/window contacts, PIR motion sensors and four PoE cameras, then program the panel so that all zones report correctly. Final steps include walk-testing each sensor, demonstrating camera feeds at the NVR and handing over a simple zone map. Successful delivery means: • All zones and cameras pass a live test with no false alarms. • Cabling is labelled and dressed inside the panel for easy future service. • A brief hand-over document lists zone numbers, device locations and default codes. Please tell me which panel brand you p...

...temperature/humidity/pressure - MAX30102 – EVT optical reference - MAX86141 – optical sensor evaluation / production candidate - MAX30205 – skin/body temperature - MAX17048 – battery fuel gauge - BQ25185DLHR – battery charger/power path - W25Q64JV – external SPI flash - DRV2605L – haptic driver - LRA vibration motor - Li-Po battery - Battery NTC - Magnetic/pogo charging contacts - Status LED - Factory programming/debug/test points MAIN REQUIREMENTS: 1. CREATE COMPLETE NATIVE KICAD SCHEMATIC Use KiCad 10.x. Create a complete professional schematic with appropriate functional sections: - Power input + protection - Battery + charging - 3.3 V power rail - Optional 1.8 V rail where required - ESP32-C3 + reset/boot/programming - I2C senso...

...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. Schematic and PCB GERBER/assembly files ready for production 2. Bill of materials with sourcing notes for the hall sensor and any precision ADC components 3. Customised AP_Periph firmware (.hex plus source) with clear documentation on parameter layout and MAVLink message mapping 4. Bench-test report demonstrating cell-voltage accuracy and current-sense linearity up to 400 A (simulated loads are fine) 5. Quick-start guide so I can flash, connect and see data flowing in Mission Planner the...

I’m building an application whose core value is actionable forecasts generated by AI-driven predictive analytics. The idea is to feed historical data into a well-designed pipeline, surface trends, and return clear recommendations or probabilities to end-users inside a clean interface. I have not locked the project into a single sector yet, so whether the data turns out to be time-series sensor readings, customer behaviour logs, or financial records we can choose the most suitable modelling approach together. Here’s how I picture the flow: first, you and I refine the problem statement and decide what questions the model must answer. Next comes data ingestion and cleaning, followed by feature engineering and model selection—think scikit-learn, XGBoost, TensorFlow, o...

...must be ADA compliant. I am aiming for a warm, inviting look rather than anything ultra-modern or heavily themed; think cozy colors, natural textures, and soft edges that feel instantly welcoming. Interactive playhouses are my top priority, and each must incorporate: - Mechanical gadgets kids can crank, push, or pull - Educational displays that explain the science behind what they are doing - Sensor-based activities that trigger lights, sounds, or movement In addition to the playhouses, there will be air/wind tubes for yarn balls and lightweight scarves to flow through, an AI-driven interactive wall, a water table zone, and a 3-mini-hoop basketball area with varying heights for the mini-hoops that allow children ages 2+ to play. Around the center of the floor, I'd like ...

...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 where my application code can push outgoing payloads and consume validated incoming data. • Deliver clean, well-commented Embedded-C (or C++) project targeted to Renesas e² studio or similar, plus a brief user guide and test scripts. Acceptance criteria 1. Demo build loads on the...

...high-frequency PWM). An isolation/protection circuit—such as dual fast optocouplers in an anti-parallel configuration or a resistor divider clamped with Zener diodes—is mandatory to safely step down this voltage to MCU-level logic (3.3V or 5V).Optical Encoder Interface: The original linear optical sensor reads the transparent encoder strip. Its A/B channel outputs are usually TTL (5V) or CMOS (3.3V). They must feed straight into the MCU's interrupt pins, utilizing pull-up resistors if the sensor features open-collector outputs.C. Power Stage & Acoustic Optimization (Driver)Mandatory Technology: Trinamic-based stepper driver ICs (e.g., TMC2209 or TMC2226) operating in StealthChop2 : Conventional drivers (A4988 or DRV8825) introduce heavy current harmoni...

Hi - document attached. A few changes from the v1 doc - adds boost converter MP3437 for DC motor driver - adds piezoelectric buzzer - adds layout positions for buzzer + humidity sensor - swaps DRV5055 for DRV5032

...(Arduino-Bluetooth, Raspberry Pi-Wi-Fi, ESP32, etc. all fine) as long as the final unit pairs quickly with an Android or iOS app and lets learners steer, change speed, and trigger at least one additional function (for example, a gripper or light). Because the real goal is teaching principles, I also need the code commented clearly and a short walkthrough that I can reuse in class explaining how sensor data flows, how the control loop works, and why latency matters. Key deliverables • Hardware schematic (including motor driver, power management, phone-link module) • Clean, well-commented firmware and mobile app code or no-code platform project file • Build guide with parts list that a school lab can source easily • Classroom-ready explanation document...

...for Medium-Voltage Line Sensor Prototype (Job Description) Important availability and engagement requirements: This is a fixed-price project only - no hourly billing and no upfront payment. Payment will be tied to agreed project milestones/deliverables. We need someone who can commit approximately 60 hours per week, work primarily in the US Pacific Time (PST/PDT) zone, and be available for real-time communication throughout the working day. We are looking for a solo engineer/freelancer, not an agency or team. Please apply only if you are not currently committed to other active projects or jobs and can make this project your primary focus. We are looking for an experienced electrical/sensor engineer to design, build, and bench-test a one-phase medium-voltage line sens...

...rural single-family home. You’ll receive an address, a shot list, and any airspace or timing notes from me. Most jobs are daylight, VLOS operations and fall well within Class G, but familiarity with LAANC requests is important for the occasional controlled-airspace site. I ask that you carry your own liability insurance and fly a platform capable of delivering crisp, properly exposed stills (20 MP sensor or better) and smooth 4K video when requested. Deliverables per property: • 10-15 high-resolution edited stills • 1-2 minutes of ungraded 4K video (optional, project-by-project) • Basic location metadata and sign-off on flight logs Turnaround is 24 hours for photos and 48 hours when video is included. Files can be transferred via Google Drive, Dropbo...

I'm seeking a skilled PCB designer to create a board for mass production that integrates an ESP32 C3 Supermini with an HLK-LD2410C for sensor integration, specifically a presence sensor. Key Requirements: - Design must facilitate sensor integration - Components: ESP32 C3 Supermini and HLK-LD2410C - Must be suitable for mass production Ideal Skills and Experience: - Proficiency in PCB design software - Experience with ESP32 and sensor integration - Background in designing PCBs for mass production

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'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...