Bluetooth Jobs

Freelancer Job Post: Hardware Engineer for Custom High-Fidelity MP3 Player (DAP) Project Overview: I am seeking a highly skilled hardware and PCB designer to develop a compact, premium digital audio player (DAP) inspired by the classic iPod form factor but modernized with high-end specifications. This device is intended for manufacturing and must balance a sleek aesthetic with a powerful internal feature set. Key Technical Specifications: Display: High-resolution E-Ink/E-Reader style screen. Requirement: Must support a high refresh rate capable of smooth video playback without ghosting. Connectivity: * Dual-Mode Bluetooth: For audio output and high-speed data transfer (dedicated mobile app integration for wireless song downloads). Dual 3.5mm Aux Jacks: For shared listening or multi-outp...

I am building an ultra-compact wrist-worn fitness band that must reliably track heart rate and steps while syncing over Bluetooth. I already have the industrial design envelope; now I need an experienced hardware engineer who can turn that concept into a production-ready PCB. Scope • Create the full schematic, selecting a low-power MCU/BLE SoC, optical heart-rate sensor (PPG), 3-axis accelerometer, and power-management IC for a rechargeable Li-Po cell with on-board charging. • Lay out a rigid or rigid-flex board that fits the tight enclosure constraints and maintains signal integrity for the optical sensor and antenna. • Optimise for battery life, drop resistance, and ease of automated assembly. • Produce a complete manufacturing package—BOM, Gerber/ODB++...

I am looking for an engineer or a small engineering team to help build a working prototype of a wearable smart ring that communicates with a thin wallet card device placed in a wallet. The purpose of the device is to prevent wallet loss by alerting the user when the wallet moves more than a short distance away from the ring. The system should provide two types of alerts: a vibration alert in the ring and an optional audio alert. The project goal is to create a fully working prototype that demonstrates the concept in real life. Experience with miniature electronics, wearable devices, Bluetooth communication, and prototype development is preferred.

I am looking for an experienced mobile app designer/developer to help create the first prototype (MVP) of a mobile app Please let me know if you have experience designing sports performance or wearable technology apps, and if you can share examples of your previous work. Thanks

I want to build a persistence-of-vision LED system that mounts on a standard bicycle wheel and shows crisp, full-color static images whenever the wheel reaches riding speed. The image should appear only at higher RPMs—cruising or sprint speeds—not while I am moving slowly or stopped. Core functionality • An addressable 256 LED spoke mounted strip driven by a small micro-controller (ESP32, Arduino-compatible, or similar) and powered by a lightweight, wheel-mounted battery. • Firmware that stores and renders static bitmaps in correct perspective as the wheel spins, synchronizing via hall-effect or magnet sensor. • A simple phone app that lets the rider pick any image, crop it to a wheel-friendly template, and wirelessly push it to the controller. There is no...

I’m building a small-footprint PCB around the ESP32 that will serve as the core of several IoT devices. The board must expose reliable Wi-Fi, Bluetooth, and flexible sensor headers so it can drop straight into prototypes and low-volume production runs. Here is the scope I have in mind: • Schematic capture for the ESP32 module with stable power-management, antenna clearance, and USB-to-UART programming interface. • PCB layout (2-layer is fine if performance allows) that remains within 50 × 50 mm, ready for standard SMT assembly. • Breakouts or onboard footprints for common environmental sensors; I haven’t finalised the exact parts, so leave room on I²C and a couple of ADC/GPIO lines for temperature, humidity or motion modules. • Production...