低功耗蓝牙（BLE） Jobs

I have an RFID reader that must talk directly to an Android device over Bluetooth, but the manufacturer never released an SDK. I need someone who can reverse-engineer or otherwise interpret the reader’s raw Bluetooth packets, pull out the numeric data stored on each tag, and feed that information into a brand-new Android app built specifically for this purpose. Here’s how I picture the workflow: • The app scans for and pairs with the reader via standard Bluetooth settings. • Once connected, it listens for the reader’s data stream, decodes each frame, and extracts only the numeric payload from every tag scan. • The app then displays the tag number on screen in real-time (simple list view is fine for now) and stores it locally for later export. I can p...

I’m putting together a new product prototype that pairs a PAA5100JE optical-flow breakout board with an ESP32. The goal is to have the ESP32 handle Wi-Fi connectivity, pull motion data from the PAA5100JE, and give me software control of several GPIOs so I can drive LEDs and switch power to an additional sensor on command. Here’s what I need from you: • An advised pin map and any level-shifting guidance for a clean, noise-free hardware hookup. • Well-structured firmware (PlatformIO or Arduino-IDE friendly) that: – Initializes the PAA5100JE and streams its measurements at a steady rate. – Publishes those readings over Wi-Fi—MQTT, HTTP, or WebSocket is fine, as long as it’s fast to implement and stable. – Exposes simple comman...

IoT Cloud Solution Requirement We have developed a custom PCB-based IoT device consisting of an ESP32 microcontroller, an EC200 GSM (4G) module, an SCD30 sensor for measuring CO₂, temperature, and humidity, and a 5-inch display that shows these sensor readings in real time. We require a complete cloud-based IoT solution for approximately 100 deployed devices. Each device should securely transmit its sensor data to the cloud over the GSM network. The cloud platform should store the data, provide APIs for a mobile application, and support a Grafana dashboard for real-time monitoring and historical analysis. The solution should include secure device communication (MQTT or HTTPS), cloud data storage, user authentication, device management, real-time dashboards, historical reports, alert not...

I’m finalising the hardware for a new piece of wearable technology and now need the firmware that will bring it to life. The sole purpose of this first release is health monitoring, so everything you write should focus on gathering and processing the following signals with medical-grade accuracy and minimal power draw. 2. What Is Already Completed (Do NOT Redo) 2.1 Hardware Design Deliverables (Final) - COMPLETED The following have been completed and reviewed: ●Final schematic design (Altium) ●ESD / EMI protection design ●Power tree & power integrity design ●RF separation strategy (LTE / GNSS / BLE) ●GSM + GNSS + sensor integration plan ●Final 4-layer PCB layout (controlled impedance) ●PCB stack-up definition ●BOM with alternates & footprint expectations ●Power IC replacemen...

Project Overview: This project involves a rechargeable BLE tracker that connects to an iPhone app and helps users locate misplaced items. Key Features: BLE pairing and communication with iPhone Last known location shown on a map when the device disconnects Automatic reconnect when the user returns within range In-app button to trigger an audible beep on the device Battery status monitoring Support for multiple trackers in future releases Optional voice-activated finding feature in later versions Desired Experience BLE firmware and communications iOS app development (Swift / SwiftUI preferred) Background BLE operation on iOS Asset tracking or IoT products Low-power embedded systems Experience with AirTag, Tile, Find My, or similar tracking products is a plus Looking For Help With Product ...