Reka Bentuk dan Susun Atur Litar Papan (PCB) Jobs

I need a complete electrical design for a true-online 600 W UPS that will operate in a home environment. The scope covers everything from the high-level architecture down to production-ready documentation, so that I can have the unit prototyped and assembled without further engineering work. What I expect you to produce includes: • Full schematic with clearly annotated component values • Bill of materials using readily available parts • PCB layout files (Gerber or equivalent) and 3-D board view • Control logic or firmware source (if a microcontroller or DSP is used) • Mechanical outline showing heat-sink placement, transformer or inductor dimensions, and suggested enclosure size • Brief test plan describing how to verify continuous 600 W output, transfer time...

## Senior PCB / Electronics Engineer – Independent Final Review of Completed KiCad Board I am looking for an experienced electronics/PCB engineer to provide a **final independent second opinion** on a completed 4-layer PCB before I manufacture the first five assembled prototypes. **Budget: approximately £20–£30 fixed price.** This is **not a design-from-scratch job** and I am not expecting a lengthy formal engineering report for this budget. What I want is an experienced engineer to spend some focused time reviewing the completed design, identify any obvious or serious remaining risks, and tell me whether they would personally be comfortable sending the board for manufacture. ### Current status The board is **SP-MB1 Rev B.1** and has already undergone extensiv...

I have a working draft of a telephony-grade hardware design and I need a seasoned electrical engineer to finish it up. I will supply the current PDFs/PCB files, and a brief block-level write-up. The files contain only basic documentation. Once we agree the hardware is sound, I’ll have a shortlist of component-level questions (why a particular codec, timing tolerance on the crystal, etc.). Clear, practical answers here will decide the final BOM. The next stage is firmware which will bring it to life. I need clean, well-documented code—preferably in C or C++—that compiles under GCC or a comparable open-source toolchain. Deliverables • Answer one question about component substitution • (Later on, next project, after I have a prototype produced) complete firm...

Prototype Fabrication / Electronics Technician Prototype Fabrication & Electronics Technician - Smart Hardware Build Project Description: HappyMat(TM) is seeking a highly capable Prototype Fabrication / Electronics Technician to physically assemble and help troubleshoot HappyMat Prototype #1. This position is for someone who enjoys hands-on hardware work - soldering, wiring, assembling, fabricating, modifying parts, troubleshooting, and turning engineering designs into a working prototype. Primary Responsibilities: • Assemble the physical prototype according to the team's engineering designs. • Perform soldering, wiring, connector installation, and electronics assembly. • Install sensors, LED lighting, display, and other electronic/mechanical components. •...

I need an engineer who can design, implement, and validate a BLDC motor–control solution that maximises energy efficiency in a residential air-conditioning unit. The end result should let the compressor fan ramp up and down smoothly, draw the minimum possible power across typical duty cycles, and integrate without fuss into the existing appliance electronics. Scope of work • Develop or adapt a control algorithm (sensorless or sensored—whichever meets the efficiency target) that delivers stable torque at low RPM and high efficiency at peak load. • Select the appropriate MCU or gate-driver IC and size peripheral components so the complete design fits inside the current controller footprint of a split-type indoor unit. • Provide firmware, annotated source cod...

Hi there, I am looking for an experienced PCB design engineer to lay out a small, high-power LED strobe controller board and prepare the manufacturing files for JLCPCB Economic PCBA (surface-mount assembly) [1.2]. The design is completely finalized conceptually, and I have attached the Engineering Requirements Document (ERD) and the Final Schematic Pinout Map below to serve as your definitive layout blueprint. Project Deliverables Required: Complete schematic and 2-layer PCB layout using EasyEDA (preferred) Verified BOM (.csv) matched to standard, low-cost components from the JLCPCB parts catalog. Formatted component placement centroid file (). Production-ready Gerber Fabrication Bundle (.zip) [1.2]. Core Structural Criteria: Form Factor:...

I’m developing an industrial-grade programmable logic controller intended to run closed-loop control systems on a factory floor. The job centres on hardware only: turning the functional specification I will supply into a production-ready board set. At a minimum I need complete schematics, an optimised PCB layout, recommended component stack (with industrial-temperature parts), and manufacturing files ready for prototype build. The design must tolerate harsh electrical noise, accept 24 V DC field power, expose isolated digital and analogue I/O, and provide standard fieldbus options such as Modbus-RTU over RS-485; extra Ethernet or CAN is a plus if it fits within the available board footprint. Acceptance is straightforward: the first-run prototype should power up, enumerate over the ...