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I’m building a shared Power Management Unit to run off a 12 S (≈ 48 V nominal) lithium-ion battery pack used across my autonomous UAVs and small UGVs. The board has to fit inside a 86 mm × 55 mm envelope, survive the vibration and temperature swings of flight, and be simple enough for repeat production through JLCPCB’s turnkey assembly service. Core functionality • High-voltage distribution with robust inrush-/over-current and reverse-polarity protection • Multiple, well-isolated regulated rails for avionics, companion computers, payloads and SAT-COM gear • Integrated buck/boost conversion and overall power-path management for maximum efficiency • On-board current, voltage and thermal sensing routed to a telemetry header/UART so the flig...

We are building a fuel tanker trailer monitoring system (pilot project) for petrol-PMS/diesel (AGO) distribution clients in our region. We have a detailed technical blueprint and now need: 1. Organizations/suppliers who can provide industry‑rated, ATEX‑compliant hardware (fuel level probes, smart GPS locks, telematics gateways, etc.) at prototype‑friendly pricing, ideally with OEM/white‑label options. 2. Embedded/firmware engineers and backend/API developers to integrate this hardware with our web/mobile platform via Modbus RS485, MQTT, and REST APIs. Note: This is a pilot project phase with ability to scale the concept to a wider client base after the tests. What We Already Have Complete system architecture and hardware list but need to know if we can get manufacturers with industry rat...

I need a complete IoT gateway hub that brings LTE (4G), Wi-Fi, Bluetooth, Zigbee and sub-GHz RF into a single, reliable unit for remote monitoring and alerting of smart-home devices. The goal is straightforward: gather data from a variety of in-home sensors and actuators, push it to the cloud over cellular when Wi-Fi is unavailable, and relay actionable alerts back to the user in real time. Here is what I expect: • Hardware design that accommodates the five radios with proper coexistence planning, power management and antenna layout. • Embedded firmware that can automatically select the best back-haul (LTE or Wi-Fi), maintain secure connections and expose a clean API or MQTT/HTTP interface for the smart-home layer. Also with bluetooth, zigbee and rf. • Delive...

PROJECT TITLE: WEAR IT V1 – Compact Wearable PCB & Schematic Design PROJECT OVERVIEW: We are developing WEAR IT, a compact screen-free wearable health and fitness band. The functional proof-of-concept (POC) is already working. We now need an experienced PCB and electronics engineer to convert the existing engineering architecture into a professional, manufacturing-ready custom PCB. This is NOT a concept-stage project. The electronics architecture and major components have already been selected. The engineer's responsibility is to create the professional schematic, PCB layout, routing, libraries, verification and complete manufacturing documentation. MECHANICAL TARGET: Maximum PCB size: 33.5 mm × 23.0 mm Maximum complete wearable device envelope: 34.7 mm × 24...

Experienced KiCad Hardware Engineer – Schematic Capture, DFM-Optimized PCB Layout & Production Package (Turnkey JLCPCB Assembly) Job Description: Honeycomb LLP is seeking an experienced embedded hardware and PCB design engineer to take a product design from initial block diagram/specifications through complete schematic capture, PCB layout, and turnkey assembly package delivery. The board will host an embedded microcontroller ecosystem (e.g., ESP32 / RP2040 / STM32) interfacing with sensors and power management circuits. The final design must be fully optimized for cost-effective manufacturing and assembly via JLCPCB SMT services. Scope of Work & Responsibilities: 1) Schematic Capture: Design modular, production-ready schematics in KiCad (latest stable version) adhering...

We are seeking an experienced PCB designer to create a compact, single-board PCB that integrates the following components: - High-precision GNSS receiver IC (u-blox ZED-F9P) - ESP32-S3 Wi-Fi/Bluetooth microcontroller module - 9-axis IMU (Bosch BNO055) - Buck-boost power management circuit for single-cell Li-Ion battery operation - Input protection circuitry (over-voltage, over-current, reverse polarity) - Dual antenna connectivity (SMA and connectors) The board must be production-ready, reliable in field conditions, and designed per industry standards. Deliverables include schematic, PCB layout files, BOM, and Gerber outputs. The designer can use KiCad or EasyEDA as the design tool. Full schematics, pin allocations, firmware interface details, and application context will be shared post...

Job Description We are looking for an experienced hardware/embedded engineer for an upcoming wearable product development project. The product is a compact wrist-worn connected device, and we need someone who has previously taken a wearable or similar battery-powered consumer electronics product from hardware design through prototyping and manufacturing. The device will involve: - Custom PCB / electronics design - Bluetooth Low Energy (BLE) - Microphone + speaker / two-way audio - Low-power embedded firmware - Battery and power optimisation - Wireless charging - Compact wearable enclosure / CAD - Prototype development and testing - DFM and manufacturing handoff The final project will require complete production-ready deliverables including schematics, PCB/Gerber files, BOM, firmware source...

Seeking layout engineer with experience in Altium, low noise analog circuitry, and EMI mitigation. This project encompasses minor updates to an existing board which has already passed EMI testing. There may or may not be a desire to further reduce emissions, but the main focus is signal processing updates.

I need an expert to test and fix circuit components for a radio project. Key tasks include: - Tasting and fixing circuits on both breadboard and PCB - Primarily focusing on transistors and diodes - Diagnosing and resolving short circuits Ideal Skills and Experience: - Proficiency in working with transistors and diodes - Experience with both breadboard and PCB setups - Strong troubleshooting skills for short circuits Looking forward to your bids!

I have a working 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 need a small 33 x 29 mm membrane touch latching switch printed circuit board (PCB) with only 8 SMDs on it, copied for a obsolete device. I'm looking to get 100 of these made, possibly 200 depending on pricing. I can send the 6 component list and photos of the circuit board and a complete circuit board is this 2 sided. The active devices are a ATMEL TINY 13A (needs programming and a PA1CD (i think it's a zener diode, 4 resistors and 1 capacitor. On the decal side there is a small led that lights when latched. It needs to be copied exactly because this switch circuit gets glued into a recess in a plastic case with cutouts for the components so the board lays flat. I may not need the switch decal. Run on a 3.7VDC battery. Key Requirements: - Exact replication of the existing PCB...