Circuit design jobs

... closed loop with pin 5 and 6 15, 12v battery sense 47k input 10k ground 100nf pf uvp 10.7v ovp 14.5v 16, nc 17, NC 18, 5v sense 100k input 47k ground note- 5v sense after 8 second if fail fault 19, nc 20, ground Soft start details for pin 5 and 6 0-1s fixed 3% duty for both pin 1-2s ramp up 5% (slowly no direct jump) 2-3s ramp up 7% slowly , at this time mcu check pin14 output for short circuit if minimum 5v present pass 5v fail engage fault both PWM off 3-4s ramp up 12% start closed loop and adjust duty cycle . After 4s start closed loop and adjust duty cycle according pin14 Important - it's center tapped transformer based push pull topology power supply not a half bridge. Pin 5 on off then pin 6 on off same duty (180 degree phase shift) cycle by cycle output. Max 45%...

...are clear: push Energy efficiency as far as current silicon will allow, unlock higher Processing power than today’s leading rigs, and experiment with new or optimised Mining algorithms. I also want the design to remain flexible enough to switch over to Bitcoin Cash should comparative profitability shift. At this stage the unit’s final home is undecided—my form literally says “Dinner,” which simply means I’ll be bench-testing the prototype in an ordinary room rather than a purpose-built data centre. Noise, thermal load and power draw therefore have to stay within limits a standard domestic circuit can support while we prove the concept. Here’s what I need from you: • A feasibility study that weighs ASIC versus FPGA paths an...

I am looking for an expert Electronics Design Engineer to review, optimize, and finalize a draft KiCad schematic for a custom, battery-powered audio logging device. The core architecture relies on an ESP32-S3-WROOM-1-N16R8-1U module paired with a TDK T5838 digital microphone featuring Acoustic Activity Detection (AAD). The device operates primarily in an ultra-low power standby mode: the ESP32-S3 stays in deep sleep with Wi-Fi completely turned off, while the TDK T5838 remains always-on to monitor the acoustic environment. When a sound trigger occurs, the microphone must wake the ESP32-S3 using an AAD interrupt (via D1, D2, or Analog AAD mode) to record audio onto a microSD card. The ESP32-S3 will wake up its Wi-Fi radio only during a specific, firmware-defined time window to transm...

...USB controller and the communication signals between the USB controller and the existing four-wire interface circuit. - Determine the appropriate signal points where the USB communication interface can be bypassed or replaced. - Connect those signals to a suitable RS485 transceiver module, using the required TTL/UART interface if applicable. - Test communication with the dispenser and verify that both transmitting and receiving work correctly. - Recommend the necessary circuit modifications and provide updated schematics. We can initially test using an external RS485 module. Based on the results, the engineer can recommend the appropriate connection points and final circuit design. We will provide the existing PCB, schematics, component details, and availab...

I'm looking for an experienced electronics engineer to develop a balance charger and discharger specifically for RC drones. The charger should support LiPo and Li-ion batteries, with a maximum voltage of 16.8V. Key Requirements: - Balance charging and discharging functionality - Support for LiPo and Li-i...The user should also be able to select the current. Ideal Skills and Experience: - Expertise in battery management systems - Expert in RC battery such as LiPo and Li-ion battery - Knowledge in embedded systems - Knowledge designing custom micro-controllers is a plus - Knowledge in arudino - Experience with RC vehicle charging systems - Knowledge of safety protocols and regulations - Strong circuit design and prototyping skills Please provide examples of similar proj...

...========================================== ### Project Overview: We are seeking a Senior Hardware / Embedded Electronics Engineer to perform an end-to-end design audit, simulation, schematic completion, 4-layer PCB layout, and thermal/reliability validation for an industrial-grade ESP32 controller board. Schematic is currently ~85% complete in KiCad. --- ### Appendix A: Scope of Work and Deliverables #### Milestone 1: Schematic Audit, Peripheral Integration & Electrical Simulation ##### A. Scope of Work (Milestone 1) 1. **Circuit Simulation & Power Integrity (PI/PDN):** - Full audit of current KiCad schematic; fix industrial design flaws. - Simulate and validate critical sub-circuits, transient behavior, and PDN stability in Siemens HyperLynx / LTspice ...

...combines electronic engineering, signal analysis, and PCB design recommendations to achieve consistent measurements across devices. Develop a calibration workflow using suitable reference standards and repeatable measurement procedures. Analyse LED output drift, photodiode response, temperature variation, and ambient light interference. Develop normalisation and compensation methods to minimise device-to-device measurement variation. Use Python or MATLAB for data analysis, calibration curves, error evaluation, and repeatability testing. Recommend PCB layout improvements for analog signal integrity, grounding, power stability, and noise reduction. Evaluate thermal management, component placement, and temperature-sensitive circuit elements. Define validation tests to ...

...addressable LED strips, side-glow fiber optics. - Design safe battery power for a wearable: 2S Li-ion pack with BMS, 5 V buck converter, fuse, power injection. - Set up a Raspberry Pi 4 master running Falcon Player (FPP), and ESP32 suit controllers running ESPixelStick, syncing over WiFi. - Map each body part in xLights and program a 1-minute test sequence synced to music. - Test with a dancer, fix failures, and document everything: wiring diagram, settings, photos. Ideal Skills and Experience: - Expertise in electronics, especially with ESP32 - Proficiency in programming for LED effects - Experience with wearable tech and fiber optics - Strong creative input for custom design - Embedded Systems, Arduino, ESP32, Raspberry Pi, Soldering, Circuit Design, IoT, ...

My current audio board is built around a single amplifier stage and, while it works, the mid-range comes out sounding strained and unnatural. I want to retrofit an Automatic Gain Control IC that includes...brief BOM with part numbers that are in stock from at least one major supplier. • Back your choices with quick calculations or simulation screenshots that demonstrate expected SNR, THD, and how the AGC action removes the mid-band distortion problem I’m hearing. • Optional but welcome: PCB layout tips for optimal grounding and minimal crosstalk. I’ll validate the work by breadboarding the circuit and checking that mid-frequency THD is significantly lower and that overall noise floor improves by the predicted margin. If those numbers line up with your docu...

I’m building a new guest-service offering in Punta Cana and need an experienced, personable tour guide to design and lead small-group city tours. Your main focus will be historical landmarks and an authentic “Dominican experience” within the city—think colonial architecture, key monuments, street art, and local cultural touchpoints that give visitors real insight into everyday life here. If you can seamlessly weave in popular shopping areas or foodie stops later, that flexibility will be a plus, but the first priority is a solid history-rich circuit. What I need from you • A clear, 3- to 4-hour walking or mixed-transport itinerary covering the must-see historical sites. • Brief storytelling scripts or talking points for each stop (Eng...

My laptop’s battery plummets from full charge to near-zero in under an hour even with light browsing, so I’m certain the issue is hardware-related rather than software bloat. I need a technician who can confirm the health of the battery pack, inspect the charging circuit, and swap in a quality replacement if that proves to be the culprit. Ideal workflow: run a quick diagnostic, show me the results, replace or re-cell the battery, then calibrate and stress-test so we can verify that normal run-time has been restored. A brief report after testing will wrap things up. If you have the tools and parts on hand and can offer at least a short warranty on the fix, let’s get this sorted.

I'm looking for a skilled electronics designer to create two custom circuit boards for a car. Requirements: 1. Steering Wheel Control Board: - Manage cruise control and 20+ reprogrammable gameplay buttons. - Must be reliable and responsive. 2. Shifter Position & Power Functions Board: - Handle shifter position data. - Control power functions to manage other circuit boards. Ideal Skills: - Experience with automotive electronics. - Proficient in circuit design and PCB layout. - Familiarity with microcontrollers and input/output handling. Please provide samples of previous work and a brief outline of your approach. Must be in a small form that does not exceed the size larger than 8 inches ( Similar layout to a 2018 Chevrolet Silverado LT ...

...for Complete Micro-Robot Engineering Design & Manufacturing Files **Project:** Big Hero 6-Inspired Modular Micro-Robot **Maximum Total Budget:** KRW 500,000 (approximately USD 350–370, depending on exchange rates) Hello, I am looking for an experienced robotics, mechanical, and electronics engineer to design a fully functional miniature modular robot inspired by the microbots featured in the movie *Big Hero 6*. I am not looking for a concept design or visual 3D model only. I need a complete, manufacturable engineering package that can be sent directly to PCB manufacturers and mechanical fabrication companies. My goal is to manufacture **as many fully functional robots as possible within a total budget of KRW 500,000**, including engineering design...

I need a skilled electrical engineer who can produce clear, code-compliant circuit schematics and detailed layouts for both residential and commercial projects. All drawings must be created in AutoCAD Electrical and Cadmatic, keeping the two files fully aligned so that edits in one platform are reflected in the other. Scope of work • Create single-line and full schematic diagrams. • Develop plan-view layouts for lighting, power distribution, and security systems. • Annotate every drawing with wire sizes, breaker ratings, load schedules, and panel references. • Deliver native DWG and Cadmatic files plus PDF issue sets. What I’m looking for • Proven experience with AutoCAD Electrical and Cadmatic on residential and commercial jobs. • Famil...

...for Complete Micro-Robot Engineering Design & Manufacturing Files **Project:** Big Hero 6-Inspired Modular Micro-Robot **Maximum Total Budget:** KRW 500,000 (approximately USD 350–370, depending on exchange rates) Hello, I am looking for an experienced robotics, mechanical, and electronics engineer to design a fully functional miniature modular robot inspired by the microbots featured in the movie *Big Hero 6*. I am not looking for a concept design or visual 3D model only. I need a complete, manufacturable engineering package that can be sent directly to PCB manufacturers and mechanical fabrication companies. My goal is to manufacture **as many fully functional robots as possible within a total budget of KRW 500,000**, including engineering design...

Project Title: FPGA-Based Real-Time PCB Defect Detection and Localization Project Description: I am looking for an experienced freelancer to assist with the development of my ECE final-year major project, titled “FPGA-Based Real-Time PCB Defect Detection and Localization.” The objective is to develop an FPGA-based system that detects and identifies the locations of visible defects on printed circuit boards (PCBs). The proposed system should compare a reference PCB image with a test PCB image and use image-processing techniques to detect differences that indicate potential defects. Required Features: 1. PCB image acquisition or loading of sample PCB images. 2. Image preprocessing, including grayscale conversion and thresholding where appropriate. 3. Reference and tes...

I’m looking for a reliable driver who can take our branded van out once a week, in the morning, and drop printed newsletters to several of our suburban team locations. Our operations manager will have the van loaded and a simple manifest ready; you just collect the keys, follow the drop order, collect signed receipts at each stop and return the vehicle to our depot. The entire circuit normally fits comfortably into a morning. Deliverables • Completed route with all newsletters delivered to the correct suburban sites • Signed delivery receipts handed back to dispatch on return • Van refuelled to the level it was collected You’ll need a valid driver’s licence, a good driving record and enough fitness to lift 10 kg bundles in and out of the...

I am looking for an experienced power electronics engineer or engineering team to design a residential-scale hybrid solar inverter for commercial production. The project involves developing a single-phase, 230 V AC, 50 Hz pure sine-wave hybrid inverter that integrates rooftop solar panels, a lithium battery bank and the utility grid. The design should prioritise high efficiency, reliability, safety and ease of manufacturing. I prefer an engineer with previous experience designing working solar inverters, grid-connected converters, MPPT controllers and bidirectional battery systems. An existing, validated reference design that can be licensed or transferred is preferred. 1. Target Specifications Rated power: 1–5 kW continuous AC output: 230 V RMS, single phas...

Every month I capture fresh karting and circuit-racing footage and need it shaped into fast-paced, energetic highlight videos that really convey the speed and adrenaline of the track. I will provide the raw clips; you turn them into polished pieces featuring: • On-screen text that calls out lap times, driver names, or key moments • Dynamic background music that matches the tempo of the action • Tasteful sound effects to punch up engine roars, tyre squeals, and over-takes The finished videos must keep viewers engaged from start to finish, so quick cuts, rhythmic pacing, and creative transitions are essential. Premiere Pro, Final Cut, DaVinci Resolve or similar pro-level tools are all fine—use whatever lets you deliver crisp colour-graded footage, tight au...

We need an experienced Electrical Engineer / EPLAN Specialist to design the electrical schematics for an industrial filling machine with vibratory motors. The project consists of two separate panels: a Main Control Panel and a Remote HMI Enclosure. Scope of Work: • Complete electrical schematic design in EPLAN Electric P8 for both panels. • Power circuit (400V AC) in the Main Panel for 2x vibratory motors and a braking device. • Control circuit (24V DC) for the PLC, safety relay, and pneumatic valves. • Hardware-based safety circuit (E-stop loop via Pilz safety relay). • Interconnections (terminals/cables) between the Main Panel and the HMI Enclosure. • 2D cabinet layout for both enclosures & Bill of Materials (BOM) expor...

I have an ESP32-based circuit fully wired and documented in a handful of clear .png images. What I need now is a clean KiCad project that turns those pictures into a proper electronic schematic and a ready-to-fabricate PCB layout my daughter can actually build and use for her college assignment. All the parts, net names, and pin connections are already settled in the images, so there is no component selection or electrical guesswork—just accurate translation into KiCad. Because the board will be assembled and deployed, please route it as a real-world, functional design rather than a classroom illustration. Standard IPC constraints aren’t mandatory; feel free to apply your usual good-practice defaults unless you spot something that obviously improves manufactura...

Job title Design & build a premium interactive Board presentation / microsite for an AI strategy session I am looking for someone to design and build a high-end interactive presentation experience for a Board Strategy Day. This is not a PowerPoint, Keynote, Canva or traditional slide deck. I want something that feels much more like navigating an interactive website or digital control centre. The experience will be presented live on a large Boardroom screen from a laptop. What I want it to feel like Think: * Apple-style product launch * premium financial-services design * very modern / future technology feel * minimalist rather than flashy * smooth zooming and movement between different parts of the organisation * highly visual * very little text * interacti...

...company seeking an experienced Electrical Designer / Control Panel Designer to create professional electrical drawings for a Walk-In Cooler & Walk-In Freezer Combo system controlled by PLC. The project includes complete electrical design and drawings for the PLC Control Panel, Walk-In Cooler, and Walk-In Freezer. The electrical design should include: Evaporator units and evaporator fan controls Electric defrost heaters Drain heaters Refrigeration solenoid valves Temperature sensors Termination Sensor Door switches and safety controls Contactors and control relays Circuit breakers and fuses Control power supplies PLC digital inputs and outputs PLC analog inputs and outputs Communication/network connections Cooler and freezer field wiring Compressor/condensin...

Custom 3-PIR GSM Anti-Theft Security Alarm with SMS, Call & Relay PROJECT DESCRIPTION: I am looking for an experienced embedded hardware and firmware developer to design and develop a custom human motion / anti-theft security alarm using an ATmega328P (Arduino-compatible) microcontroller. The device will use 3 external PIR motion sensors connected to the main PCB through long cables. The main feature is a selectable PIR detection threshold of 1, 2, or 3 sensors. This will help reduce false alarms. MAIN PIR LOGIC: The device has: * PIR 1 * PIR 2 * PIR 3 The user can select the required number of PIR sensors that must detect movement. Threshold 1: Any one PIR becomes active = intrusion confirmed. Threshold 2: Any two PIRs become active = intrusion confirmed. PIR1+PIR2, PI...

...you to layer in data outlets, general power points, and CCTV camera locations. Some of these positions are already sketched, others will need your practical advice so the electrician receives a layout that is both code-compliant and sensible to install. Expected deliverable: a coordinated set of PDF drawings (and DWG if you work in AutoCAD/Revit) clearly showing lighting symbols, switching, circuit numbers, data outlets, GPOs, and CCTV points, ready to hand straight to the contractor. If you spot clashes or have optimisation ideas, note them on a short legend or revision cloud so we can sign off quickly. Tools you are comfortable with—AutoCAD, Revit, Dialux, or similar—are welcome as long as the final output is clear. Let me know your turnaround time and any que...

We are looking for an engineer team which has a good PCB design skill with motor driver knowledge and experience with good programming skill. This project is to upgrade our current PCB(Old prototype: having some issues) to update version. We will make one prototype PCB to test. This machine has the following system: 1x main CPU (GD32F450IGH6) 1x AC motor inverter (RS485) Command input 1x sensor Up to 5x stepping motor ( synchronized, need fast movement)　 Up to 5x sensor 1 x DC motor 1 x sensor 1 x SBC( RPI) need to connect to main CPU ( need to have fast communication ) 3 x stepping motor 3 x sensors 1 x DC brushless (small ) 2 x stepping motor 3 x COM to other device Ethernet We will send the current prototype PCB info induvidually when we decide to proceed. Current pro...

Medieval torch prop (~30–45 cm, handheld) for outdoor play. Working FDM-printable CAD draft exists in Fusion 360, but all dimensions are adjustable around your component choices. Concept already validated with basic parts; we now want production-grade design. Electronics scope: - Compact circuit: 1+ LEDs/small bulb with realistic flame flicker (not static blink) - On/off switch, user-replaceable AA/AAA battery compartment (no soldered cells) - Minimum 14–20 h runtime per battery set, justified with power calculations - Full off-the-shelf parts selection (part numbers + purchase links) CAD scope: - Rework enclosure in CAD (we used Fusion 360, but could be another CAD software) around your components (battery door, switch mount, wire routing)...

...Defense counsel has already moved to dismiss under Rule 12(b)(6), arguing that the pleading “fails to state a claim.” I need a concise, well-researched memorandum in opposition that shows the complaint satisfies Twombly/Iqbal plausibility standards and aligns with Eleventh Circuit precedent. Key points to address • Explain why the factual allegations, taken as true, plausibly support each element of a Title VII disparate-treatment claim. • Distinguish or counter any cases the defense cites and supply stronger Eleventh Circuit or Supreme Court authority in our favor. • Reinforce jurisdiction and venue briefly, even though the challenge is limited to Rule 12(b)(6). • Observe the Northern District of Alabama’s formatting and pag...

...and the exact plots I want to see for each one. Your task is to recreate every item in that file inside MATLAB / Simulink, run the simulations, and deliver both the finished circuit models and the corresponding graphs. I will share the document right after we start so you can mirror its structure component-by-component. For every entry please: • Build the circuit in Simulink (using standard Simscape or equivalent blocks). • Configure parameters exactly as shown in the document. • Generate the plots called for—same axes, units, and labeling. When you hand over the work I expect: 1. The .slx files for each circuit, cleanly organised. 2. Any supporting .m scripts or functions used to drive the simulations. 3. Exported figures (PNG or ...

...*Intelligent *Advanced *High-performance *Technology-forward *Credible for financial services The brand should sit between AI/intelligence and financial technology. We do not want it to lean too heavily into one or the other. It should feel futuristic, but not sci-fi. It still needs to work for banks, credit unions, financial institutions, executives, and enterprise buyers. Overall look and feel The design should be: *Bold and confident *Geometric and precise *Minimal *Architectural *Sleek and modern *Easy to recognize *Strong enough to work at small sizes The logo should include a standalone symbol/icon plus the FiSphere wordmark. The symbol should reference the idea of a sphere, connected environment, or ecosystem, but in an abstract way. We do not want a literal globe. ...

I am looking for an experienced Electronic Engineering Freelancer to design a custom, compact, all-in-one PCB for a premium adult collectible display base. The board will be manufactured using standard Turnkey PCBA (automated assembly), so the design must utilize readily available components from standard libraries (such as JLCPCB / LCSC component libraries). Core System Requirements: 1. Microcontroller Core: Integrated ATmega328P-AU (TQFP-32 surface mount package) with a 16MHz crystal oscillator and supporting circuitry. Programming/power interface must be a surface-mount USB Type-C port linked via a CH340G/C serial converter chip. 2. Power Architecture: Direct 5V DC power delivery completely driven over the Type-C USB interface (bypassing battery circuitry entirely). Must i...

I need a simple, single-board PCB layout created from an already completed and fully tested Fritzing (.fzz) project. The circuit logic, components, and pin mappings are 100% verified on a physical breadboard. This is a very quick micro-task for an experienced electronics engineer. The design is an ultra-low-power Smart Irrigation Sensing Node using an all-3.3V power architecture. Key Specifications & Pin Mapping: • Microcontroller: Arduino Pro Mini (3.3V variant) • Radio Module: LoRa Ra-01 (Antenna area must be kept completely clear of copper traces and ground planes). Pin connections required: NSS to D10, RST to D9, DIO0 to D2, plus standard hardware SPI lines (D11, D12, D13). • Power Input: Direct 3.2V LiFePO4 Battery connection to the Arduino VCC rail (...

We are looking for an experienced KiCad PCB layout engineer to design and route a compact, battery-efficient 2-layer ESP32-WROOM-32E board for our smart IoT device. We have already completed the circuit engineering, component selection, net map, and mechanical envelope. You will be provided with: 1. A comprehensive 19-page PDF Engineering Specification with exact pinouts, power topologies, and routing rules. 2. A complete Excel BOM with exact footprint definitions, component MPNs, and Indian distributor references. 3. Legacy KiCad board files containing the exact board outline (52.98 mm × 34.00 mm with stepped corner) and coordinates for 6 mechanically locked components. SCOPE OF WORK: 1. Schematic Capture / Verification in KiCad 7 or 8: - Implement clean schematic...

...Development – LV/MV/HV Circuit Breakers (Switchgears) Online Training Course Project Overview I am developing an online technical training course titled “LV/MV/HV Circuit Breakers (Switchgears)”, designed for electrical engineers, technicians, maintenance professionals, and other personnel involved in electrical power systems. We are looking for an experienced freelance presentation designer / instructional designer to develop a professional, technically accurate, and visually engaging presentation based on the training content provided by Adva Therm. The course is structured as a 3-day online training program, 5 hours per day, covering the principles, construction, operation, selection, testing, maintenance, troubleshooting, and safety aspects of LV,...

Hi, I need a schematic and PCB design for my college project, an Automatic Soap Dispenser with Low Soap Level Detection. I am using: - Arduino Nano V3.0 (ATmega328P) - TTP223 capacitive touch sensor - XKC-Y25-V non-contact liquid-level sensor - Kamoer KPHM100-HB peristaltic pump — 12 V, 0.5 A - LED for low-soap indication - Pump driver circuit Operation: When the TTP223 is touched, the Arduino Nano should activate the 12 V peristaltic pump for a programmed amount of time and then stop it. The XKC-Y25-V will be mounted outside the soap container at the low-level point. When the soap becomes low, the Arduino should turn on an LED. The Arduino must not drive the pump directly. Please include a suitable transistor/MOSFET pump-driver circuit and flyback protection....

... weaving in my personal interests in informática y software, reparación de computadoras, creación de aplicaciones and the fundamentals of AI. My main objective right now is reparación de computadoras, with an emphasis on hardware-level troubleshooting, so I’d value someone who can tie core AP-physics and computer-science principles directly to real-world repair scenarios. If you can explain circuit diagnostics one day and free-response strategies the next, we’ll be a perfect match. The engagement will be fully online. I’d like regular, structured sessions that blend concept walkthroughs, problem-solving practice and exam-style assessments. Clear explanations, patient guidance and targeted homework between meetings are crucial so I ...

...build a single functional prototype of a wearable device called Mitra – Wearable Guardian for Dementia Care. This is a student innovation/competition prototype, not a commercial medical device. The priority is to create a reliable, compact and presentable working prototype at a reasonable cost. I am specifically looking for someone experienced with ESP32, GSM/SMS, sensors, audio playback, PCB design and small wearable electronics. --- Required Features 1. Emergency SOS - Physical, easily accessible SOS button. - When pressed, Mitra should send an actual SMS to a pre-configured caregiver phone number. - SMS should contain: - Emergency alert - Brief message - Pre-configured demonstration location - Google Maps link - Live GPS is NOT required for this prototype. ...

I have designed in Inventor a plastic case for a circuit board. However, I need a professional designer who understands injection moulding draft angles and how to perfect the model so that it is ready for production. All critical dimensions are already defined so you can work directly from my exact measurements and board outline. The finished housing must fully enclose the PCB while integrating the following functional details: ventilation slots around the component hot-spots, clean mounting holes that line up with my chassis and connector port entry points. I can share my IPT file and photos of what I have made so far. Deliverables I need back: • Inventor part/assembly files (.ipt/.iam) • Manufacturing-ready STL or STEP export • A 2D drawing showing overall size,...

...ESP32-S3 Low-Power Audio Recorder PCB (Dual Variant Prototype Layout) Job Description I am looking for an experienced electronics design engineer to create a custom, compact PCB layout based on the ESP32-S3 microcontroller. The target system is a battery-powered, offline audio data-logger intended to record sound locally to a microSD card during specific daily schedules and securely upload files to a remote server over Wi-Fi during a specific time window. To optimize power consumption and sound performance, I require TWO (2) separate PCB layout variations based on the same core schematic template. Scope of Work & Deliverables The freelancer will provide full design files (EasyEDA Pro/KiCad) alongside two separate production packages completely optimized for automate...

...======================================== ### Project Overview: We are seeking a Senior Hardware / Embedded Electronics Engineer to perform an end-to-end design audit, simulation, schematic completion, 4-layer PCB layout, and thermal/reliability validation for an industrial-grade ESP32 controller board. Schematic is currently ~85% complete in KiCad. --- ### Appendix A: Scope of Work and Deliverables #### Milestone 1: Schematic Audit, Peripheral Integration & Electrical Simulation ##### A. Scope of Work (Milestone 1) 1. **Circuit Simulation & Power Integrity (PI/PDN):** - Full audit of current KiCad schematic; fix industrial design flaws. - Simulate and validate critical sub-circuits, transient behavior, and PDN stability in Siemens HyperLynx / LTsp...

I'm looking for an experienced PCB designer to create a board for a weather station. The station will display barometric pressure, temperature, and humidity using digital se...experienced PCB designer to create a board for a weather station. The station will display barometric pressure, temperature, and humidity using digital sensors. Requirements: - Use of I2C digital sensors - Integration of sensors for pressure, temperature, and humidity - Experience with PCB design software - Understanding of sensor data interpretation and circuit design - Ability to provide a schematic and Gerber files Ideal Skills and Experience: - Proficiency in I2C communication - Previous PCB design projects - Knowledge of environmental sensors Please provide examples of similar...

I’m looking for an electronics / embedded hardware engineer to help turn an existing PI/TDEM hardware design into a working, bench-tested prototype. The project is already substantially developed. I already have the engineering architecture, circuit concepts, component work, connection details, timing approach, and implementation planning. This is not a design-from-scratch project. I mainly need someone who can: - review the existing engineering package only as needed for implementation; - complete or correct schematic/PCB work where necessary; - prepare manufacturing files and BOM; - work with STM32 firmware and ADC acquisition; - handle pulsed MOSFET / inductive coil hardware; - assemble and bring up the prototype; - perform oscilloscope and LCR measurements; -...

# Custom Industrial PLC Hardware & Firmware Development We are looking for an experienced **Embedded Systems / Industrial Electronics Engineer** to design and develop a custom industrial PLC/controller suitable for real industrial environments. The objective is to develop a reliable, professional, manufacturable controller based on a custom PCB, not a hobby-level Arduino or development-board solution. The engineer should have strong experience in industrial electronics, embedded firmware, PCB design, EMC/ESD protection, industrial communications, and microcontroller-based control systems. ## Project Objective Develop a compact industrial PLC/controller capable of handling digital and analog I/O, industrial communications, machine-control logic, and optional IoT conne...

We are seeking an experienced multidisciplinary engineering team to develop a complete engineering design, BIM coordination and construction documentation package for a large-scale commercial building project. This is a multidisciplinary engineering project covering Mechanical, Electrical, Plumbing, HVAC, Fire Protection, Life Safety, BIM and detailed CAD documentation. The selected engineering team will be responsible for developing coordinated engineering systems from design development through construction-ready documentation. The scope may include: MECHANICAL & HVAC SYSTEMS - AHU and FAHU systems - FCU systems - Chilled water systems - VRF/VRV systems - DX systems - Condensing units - Chillers - Cooling towers - Pumps - Heat exchangers - Air handling equipment - Su...

# Freelancing Project Posting Lighting Design for 4-Story Villa (Interior & Exterior) --- ## Project Overview We're seeking an experienced lighting designer for a complete lighting design package for a 4-story residential villa. This includes interior and exterior lighting planning, fixture specifications, and installation guidance. ## What We'll Provide - Complete AutoCAD floor plans (all 4 levels + exterior/landscaping) - Site dimensions and room specifications ## Core Deliverables Required - **Lighting design plans** (CAD format) with fixture placement, circuit layout, and switch locations - **Installation notes** (height, spacing, wiring requirements) - **Smart home integration proposal** – sensor placement, automation zones, app con...

...Development – LV/MV/HV Circuit Breakers (Switchgears) Online Training Course Project Overview I am developing an online technical training course titled “LV/MV/HV Circuit Breakers (Switchgears)”, designed for electrical engineers, technicians, maintenance professionals, and other personnel involved in electrical power systems. We are looking for an experienced freelance presentation designer / instructional designer to develop a professional, technically accurate, and visually engaging presentation based on the training content provided by Adva Therm. The course is structured as a 3-day online training program, 5 hours per day, covering the principles, construction, operation, selection, testing, maintenance, troubleshooting, and safety aspects of LV,...

1. Review schematic and PCB. 2. Review power architecture, battery/charging circuit and peak current requirements. 3. Review ESP32, motor and hall sensor interfaces. 4. Review current PCB issues and proposed fixes. 5. Check thermal considerations. 6. Review PCB layout from EMC/EMI perspective 7. Review enclosure, PCB size, mounting and connector/cable 8. Identify key changes required for Rev2 9. Bring more ideas to desk

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I’m developing a new medical device and need a multi-layer printed circuit board engineered from the ground up. The board must be laid out with full consideration for IEC 60601 safety requirements, including creepage/clearance rules, isolation barriers, and low-leakage current paths suitable for patient-connected electronics. Scope of work • Translate my functional block diagram and preliminary schematic into a production-ready multi-layer PCB. • Optimize component placement for signal integrity, EMI/EMC, and thermal dissipation typical of medical environments. • Provide complete manufacturing data: Gerber/ODB++ files, drill files, stack-up, controlled-impedance notes, BOM, and pick-and-place. • Document the design with a brief compliance repo...

I need an attorney who is already admitted in any federal district court and is willing to seek admission in the Fourth Circuit Court of Appeals. My corporation is the named borrower, I am the guarantor, and I will continue to appear pro se; you will be counsel of record for the company only. Scope of work • Enter a notice of appearance and complete the simple admission process for the Fourth Circuit. • Electronically sign and file the motions and briefs that I draft and you approve of. The matter will proceed entirely on written submissions—no oral argument is expected. • Alert me to any weaknesses you may see. I am relying on my experience as a lender to structure my usury defense. Context I will take responsibility for researching, writi...