Projeto e Layout de PCB Jobs

I need a robust arc-suppression circuit engineered specifically for my RF welding machine. The goal is simple and non-negotiable: stop destructive arcing before it reaches the generator or matching network, protecting the entire system from costly downtime and repairs. Key points you should know up front • Purpose: prevention of equipment damage only—operator safety circuits are handled elsewhere. • Architecture: solid-state components throughout; no relays or mechanical contacts. • Ratings: I will share the operating voltage and current range once we start, so your design must be adaptable within those limits. What I expect to receive 1. Schematic with clearly labeled protection stages (detection, quench, reset). 2. Bill of materials with manufacturer p...

Description Of Project - HRID-AI is a low cost handheld device aimed at estimating ejection fraction using multimodal biosignals (ECG, seismocardiography, and cardiac acoustics). It uses a combination of biosensors to detect abnormalities in ECG, presence of abnormal heart sounds and their interpretation as well as usage of seismocardiographic signals to provide an estimate of Ejection Fraction. The principle has been verified through multiple studies done in reputed institutions The goal is rapid point-of-care triage for echo referral in emergency and low-resource settings in patients of Heart Failure with Reduced Ejection fraction We need your support, skills and expertise for sensor integration, embedded design, signal acquisition. Current Status- We have so far been able to dev...

I need an experienced PCB programmer to reprogram a multi-layer PCB for a coffee maker. The board is used for a coffee maker. Required Skills and Experience: - Proficiency in reprogramming multi-layer PCBs - Experience with radio frequency (RF) applications - Knowledge in embedded systems - Familiarity with brewing settings, temperature control, timing and scheduling, and pump control functionalities

I have an Arduino-based board that is powered from its own DC rail, yet it has to monitor several other DC lines whose grounds are completely separate. Right now I’m simply feeding each line through a voltage divider, and—unsurprisingly—the readings jump around or drift because the grounds are floating. The symptom is clear: inaccurate voltage readings that make the data unusable. What I need is a clean, reliable way to sense those isolated DC voltages without tying the reference points together. Whether that means introducing isolated amplifiers, optocouplers, tiny transformers, or another proven technique is up to you; I’m open to whichever approach gives stable, repeatable results and keeps the measurement side safe for the microcontroller. Here’s what I&...

I need an experienced PCB designer to edit an existing single-sided PCB design. The current design is in Altium and requires modifications for testing and validation. Requirements: - Change component placement - Route traces Ideal Skills and Experience: - Proficiency in reading and editing Altium - Experience in PCB design, especially for testing purposes - Attention to detail and precision Please provide examples of previous work.

I need help turning three off-the-shelf modules now sitting in my glasses prototype—a USB 2.0 hub, a USB audio codec (mic plus stereo out) and a dual-channel Class-D amplifier—into one long, narrow board that can slide inside the temple arm. The space I have measured is roughly 80 mm × 15 mm, so the layout has to be linear rather than squarish, with components placed to keep the height profile as low as practical. The board will run exclusively from the host’s 5 V USB rail; no batteries or additional supplies are planned. Because this is for voice prompts and basic media playback, a standard-grade codec is fine—I’m not chasing audiophile specs, just dependable microphone input and clean stereo output that won’t hiss or pop when the amp is idle. A...

Description Of Project - HRID-AI is a low cost handheld device aimed at estimating ejection fraction using multimodal biosignals (ECG, seismocardiography, and cardiac acoustics). It uses a combination of biosensors to detect abnormalities in ECG, presence of abnormal heart sounds and their interpretation as well as usage of seismocardiographic signals to provide an estimate of Ejection Fraction. The principle has been verified through multiple studies done in reputed institutions The goal is rapid point-of-care triage for echo referral in emergency and low-resource settings in patients of Heart Failure with Reduced Ejection fraction We need your support, skills and expertise for sensor integration, embedded design, signal acquisition. Current Status- We have so far been able to dev...

Oil pipelines are commonly buried 3–5 feet beneath riverbeds to protect them from environmental exposure and mechanical damage. However, riverbed scour and sediment transport during floods or strong flow events may remove sediment and potentially expose the buried pipeline. Continuous monitoring of riverbed elevation is therefore essential to ensure pipeline safety and to understand sediment dynamics. This project proposes a Smart Rock monitoring system designed to measure riverbed scour and elevation changes. Each Smart Rock contains an embedded absolute pressure sensor that measures water pressure to estimate local water depth. By combining these measurements with the absolute water surface elevation, the absolute elevation of each Smart Rock can be determined. Since the pipeline ...

I need an experienced PCB designer to edit an existing single-sided PCB design. The current design is in Altium and requires modifications for testing and validation. Requirements: - Change component placement - Route traces Ideal Skills and Experience: - Proficiency in reading and editing Altium - Experience in PCB design, especially for testing purposes - Attention to detail and precision Please provide examples of previous work.

I own an original KeyMouse Track, now discontinued, and would like to bring it back to life. Reference product: Intended production size: Only for personal use at this point. However, where possible and cost-effective, design decisions should consider future scalability to larger production runs. Available artifacts: - STL Files (I don't know whether these files are suitable for manufacturing, or some earlier draft): - Assembly instructions: - Original PCB which can be purchased: - Track ball sensor module image and description: - Custom-made wrist extension CAD files: Deliverables: - Deliver cleaned and validated STL files suitable for reliably producing a functioning unit via 3D printing. with the external wrist extension integrated - Full reverse eng...

I’m developing a compact data-acquisition module and need a local electronics engineer in Austin who can take the mixed-signal front-end from concept to ready-to-fab documentation. The heart of the job is a clean, low-noise analog section feeding a high-resolution ADC, with the digital side handling basic buffering and a simple SPI or I²C hand-off to my existing microcontroller board. We’ll meet in person for the initial requirements review and again when hardware is on the bench so rapid tweaks are possible. I already have rough performance targets—sampling at 1Hz, 12–16-bit resolution, and a 12V single-rail supply—but I’m looking for your guidance on component selection, input protection, and clocking strategy to hit those numbers without over-en...

I need a complete, production-ready design for a 100 W LED luminaire that will serve as the main light source in a living-room setting while still being robust enough for occasional outdoor use. The fixture must deliver high lumen output with excellent efficacy, maintain color stability over time, and integrate smoothly with common smart-home ecosystems (Wi-Fi, Zigbee, or similar). Scope of work • Component selection: high-efficiency LED array, constant-current driver, thermal interface materials, optics, housing, and an IP-rated enclosure or coating suitable for indoor/outdoor crossover use. • Electrical design: full schematic and PCB layout for the LED driver, MCU or smart-control module, surge and polarity protection, and any required EMC filtering. • Thermal manag...

I own an original KeyMouse Track, now discontinued, and would like to bring it back to life. Reference product: Intended production size: Only for personal use at this point. However, where possible and cost-effective, design decisions should consider future scalability to larger production runs. Available artifacts: - STL Files (I don't know whether these files are suitable for manufacturing, or some earlier draft): - Assembly instructions: - Original PCB which can be purchased: - Track ball sensor module image and description: - Custom-made wrist extension CAD files: Deliverables: - Deliver cleaned and validated STL files suitable for reliably producing a functioning unit via 3D printing. with the external wrist extension integrated - Full reverse eng...