Automotive PCB Design Review – ESP32, I2C, LM393, MCP23017 (12/24V System)
I am looking for an experienced electronics engineer to review a completed schematic for an automotive project before moving to PCB layout. The system is design...
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LM5170 EVM Buck Debug Help
My Texas Instruments LM5170EVM-BIDIR board refuses to deliver any output voltage when I switch it to buck mode. Boost mode also does not run, so I’m convinced t...
Read moreIndustrial IoT PCB Design: Schematic Review, ESP32 Update, Engineering Optimization & Full EasyEDA Layout
I am looking for a skilled electronics/PCB design freelancer for an industrial IoT device. This is not just a simple PCB layout job. The work includes schematic...
Read moreQuadruped Power PCB Design
I need a compact, reliable PCB that will serve as the power and control backbone for my quadruped robot. The board has to integrate three key blocks: a microcon...
Read moreSolenoid Board R&D
I am an intern and I am working on a task that needs 4 solenoids that take 20v in very short pulse to operate. I started designing my own PCB board, but I just...
Read moreKiCad DRL Circuit Analysis, fix and simulation
I am looking for an experienced electronics engineer to review, validate, and improve a Driven Right Leg (DRL) circuit designed in KiCad. The circuit is part of...
Read moreLoRa RF Switch Schematic Review and PCB layout
I have a dual-band RF switch already drafted in Altium that lets one shared antenna handle both 433 MHz (primary) and 470 MHz LoRaWAN links. Before moving on to...
Read morePCB Replication for up to 7 Boards for lost Gerber and Bill of Materials
This is for US or Canada designers ONLY. If you are not in the US or Canada please don't reply. I am not interested in working outside North America. We will do...
Read moreComplex High-Speed PCB Layout - 25/03/2026 08:19 EDT
HAT Board: The schematic for my MYC-LD25X “Hat” board is designed and needs to be checked and a rigorous placement and routing job in Altium Designer. The desig...
Read moreWater Plant Wiring Diagrams
I'm seeking a skilled professional to create detailed wiring diagrams and schematics for the pumping stations at a drinking water treatment plant. The diagrams...
Read morePCB Layout Design & Optimization (USB + RS485 | EasyEDA)
We are seeking an experienced PCB designer to review, correct, and optimize an existing PCB design. Project Scope: * PCB includes ESP32 (or MCU), USB interface,...
Read morePCB Design Validation – ESP32 Solar Powered IoT Controller
Description: We are developing a solar-powered ESP32-based IoT controller for agriculture field deployment (valve control and sensor monitoring). Before sending...
Read moreMulti-Layer PCB Design for Industrial Equipment
PCB Designer – Automotive / Industrial Multi-Layer PCB (Schematic Review + Layout) Job Description: We are looking for an experienced PCB designer to review an...
Read moreConvert traced sketch to precise PCB outline CAD drawing (DXF)
Project Title: Convert traced sketch to precise PCB outline CAD drawing (DXF) Description: I have attached a traced sketch of a PCB outline with component place...
Read moreST25R3916B-Based NFC Antenna Array – Review, Redesign & Prototype
PROJECT SUMMARY: I need an experienced RF/NFC hardware engineer to design a compact, modular 4×4 NFC sensor array board. The board will be used to detect and id...
Read moreSenior Electrical Engineer for Device Schematic Review
We are seeking a senior electrical engineer to perform a professional schematic review of a bio-impedance based glucose measurement device. The system includes:...
Read morenRF52832 RF PCB Layout
I have a nearly finished schematic for a small, nRF52832–based board and now need it turned into a production-ready PCB in KiCad. Before traces are drawn I’d li...
Read moreDeveloping PCB for Ultrasonic Transducer Driver
I'm looking for an experienced pcb developer to create a professional-grade pcb of driver for ultrasonic transducer. Driver should give output 120w 40khz. Key R...
Read moreIonic Fingerprint Schematic using ESP32
Need getting Ionic Fingerprint from Saliva Need the schematic design circuit for this, with its components
Read moreESP32-based IoT PCB Layout Design & Review
Hello, I am looking for an experienced PCB designer to complete schematic review and PCB layout for an ESP32-based industrial IoT board using EasyEDA (Collabora...
Read morePCB Review Needed
I have a nearly finished schematic and two-layer board for a small dual-battery embedded system and want a second set of expert eyes before I send it off to fab...
Read moreAnalog Circuit Troubleshooting & Report
I have an analog board on my bench that should be generating a clean output, yet the signal path is completely silent. I need a fresh set of expert eyes to pinp...
Read moreCompact BLE PCB for Wearable GPS
A NRF52 based low power consumption BLE tag with 4G and GPS capabilities. Features: Microcontroller: NRF52, any GPS + 4G module operable in south america Power...
Read morePCB Layout Engineer Needed - KiCad
I'm looking for an experienced PCB layout engineer to help with a prototyping project using KiCad. The PCB will need to support both through-hole and surface-mo...
Read moreCircuit Board Replication Expert Needed
I'm looking for a skilled professional to help me replicate a circuit board. The circuit board is for a radio device.See below https://kitronik.co.uk/products/2...
Read moreCustom ESP32 PCB Gerber (2026)
I’ve been developing on the ESP32-WROOM-32 and now need a custom board so I can move my prototype off the breadboard. The board should have ESP32, EM18, RTC, Ca...
Read moreHardware & Firmware Feasibility Review
I have an existing hardware design that needs a clear-headed feasibility check before we move further. Your task is to study the current schematics alongside th...
Read moreDevice Disassembly & Current Mapping
I have a compact electronic gadget roughly the size of a modern smartphone. For component-testing purposes, I need it taken apart methodically, each part docume...
Read moreOutdoor CO₂ & Audio PCBA
I want to create a PCBA contains ESP32-C3-Mini, SCD41, INMP441, JST-PH 2Pin port serves as the Solar/Charger Input. The port leads directly to LiFePO4 charging...
Read morePCB Design Needed: Miniature Medical Wearable (Nordic nRF52840 + TI ADS1293)
Project Overview We are looking for an experienced Electronics Design Engineer to develop the PCBA for a compact medical wearable device. The project involves d...
Read morePCB Debugging & Correction – Looking for Experienced Hardware Engineer
Job Post: Senior PCB Design Reviewer (Schematic + PCB QA) We are looking for an experienced Senior PCB Design Engineer to perform a deep technical review of an...
Read moreDiagnose AK4454VN I2S Connection
The AK4454VN DAC in my design feeds a Dante module over I²S, yet the system remains silent. My main objective is to uncover the exact point of failure and resto...
Read moreCustom ESP32 PCB Gerber
I’ve been developing on the ESP32-WROOM-32 and now need a custom board so I can move my prototype off the breadboard. The board should have ESP32, EM18, RTC, Ca...
Read moreSmart Switch PCB Design Needed
I need a PCB design and schematic review for a mains-powered smart switch intended for home automation. Key Requirements: - Design for home automation applicati...
Read moreKiCad Schematic Review & PCB Layout
I have an existing KiCad schematic for a two–sided STM32-based flight controller (roughly 120 components) that needs a professional once-over before we head to...
Read moreFusion360 PCB-to-KiCad Upgrade
I already have a fully captured schematic and a reference board outline in Autodesk Fusion 360; traces have not yet been laid. Before we move forward I’d like a...
Read moreIoT Sensor PCB Review
I need a senior hardware/PCB engineer with direct experience in LTE-M/NB-IoT designs to perform a thorough pre-production review of my battery-powered IoT envir...
Read moreScopus Q1 Food Science Review
I am looking for a seasoned academic writer to craft a full-length literature review that meets Q1 Scopus standards in food and agricultural science. While the...
Read moreIndustrial Automation Schematic Review
Tengo listos varios esquemáticos para un circuito de aplicación industrial orientado a la automatización y quiero que un par de ojos expertos los examinen a fon...
Read moreFlexible PCB for Haptic Wearable
We are looking for an experienced flex PCB designer to create an ultra-compact 80 mm polyimide flex PCB for a wearable device. We already have: A complete mecha...
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