Bluetooth Jobs

I need a compact acquisition board that reads pressure sensors and sends data by Bluetooth and Celullar (SIM). Your job covers both the hardware and the embedded layer that will live on the board. System Requirements : A custom PCB (embedded system) must be designed to interface with the sensor. The system will be powered by an external battery, for which voltage and current requirements must be carefully calculated. The PCB will receive pressure data from the sensor through front-end components directly connected to the electrode outputs. A microcontroller (MCU) will scan the matrix at high frequency by sequentially energizing one electrode (e.g., rows) and measuring responses across perpendicular electrodes (e.g., columns). This scanning process allows detection of pressure points acros...

Job Description: We have an existing football betting/gambling platform source code and need an experienced freelancer/team to complete, fix, test, and launch it before the 2026 World Cup. Main Tasks: Review existing source code Fix bugs and missing functions Improve website UI/UX for desktop + mobile Set up admin panel, user panel, odds/match display Wallet, deposit/withdraw, reports, P/L summary Security check and server deployment Full testing before launch Make system stable for high traffic during World Cup Required Skills: PHP / Laravel / Node.js / React / Vue / MySQL Betting/gambling website experience API integration Payment/wallet system Admin dashboard Server setup: VPS, Nginx, SSL, Cloudflare Security and anti-bug testing Important: We already have source code. We need some...

I need an Android (APK) application that lets up to twenty of my shop staff quickly create clothing purchase estimates while standing with the customer. 1) app users 15+ salesman, 2 cashier/manager and me 2) customer estimate copy should have details of date, product price and quantity 3) daily, weekly and monthly commission can be calculated on clicking of a button 4)auto generate estimate number once new customer select a product at sales end. System flow 1. New customer select a product example at S5 on salesman app a new estimate number E101 generate he will enter product rate and quantity . 2. When customer move another salesman example S8 , S8 will select estimate number E101 on his app and enter product rate and quantity 3. At cashier/ manager customer will get estimate number E101 ...

Here is the professional project description in English, ready to be posted on platforms like Upwork, Fiverr, or Freelancer.com. Project Title: Hardware Design (Schematic & PCB Layout) for Ultra-Low Power BLE Motion Sensor (nRF52810) Project Description: I am looking for an experienced electronics design engineer with a background in Nordic Semiconductor SoCs to develop a compact, high-efficiency PCB for a motion-tracking sensor node. Hardware Requirements: MCU: Nordic nRF52810 (BLE 5.0 SoC). Sensor: STMicroelectronics LIS2DW12 (3-axis accelerometer, ultra-low power). Memory: Winbond W25Q512 (512Mb SPI Flash) to store 15 days of data at 6Hz. Power Source: CR2032 Coin Cell Battery (Design must be optimized for low peak current/high internal resistance). Antenna: Integrated PCB T...

I need an Android (APK) application that lets up to twenty of my shop staff quickly create clothing purchase estimates while standing with the customer. 1) app users 15+ salesman, 2 cashier/manager and me 2) customer estimate copy should have details of date, product price and quantity 3) daily, weekly and monthly commission can be calculated on clicking of a button 4)auto generate estimate number once new customer select a product at sales end. System flow 1. New customer select a product example at S5 on salesman app a new estimate number E101 generate he will enter product rate and quantity . 2. When customer move another salesman example S8 , S8 will select estimate number E101 on his app and enter product rate and quantity 3. At cashier/ manager customer will get estimate number E101 ...

I’m developing a compact consumer-electronics board built around an ARM Cortex-M device and now need the full PCB layout ready for manufacture. The schematic is largely settled; what I need from you is a clean, production-grade board design that meets EMC best practices and leaves enough headroom for future revisions. Key functional blocks that must be routed: • Wi-Fi module • Bluetooth module • Power-management unit with battery-charging capability • High-speed USB interface • Space for a small “other” expansion header I’ll define during the layout review You are free to work in Altium Designer, KiCad, OrCAD, or another professional tool as long as the output can be supplied in standard Gerber, drill, and assembly files. Delivera...

I need an Android application that pulls a small packet of ​text data—essentially a list of BLE MAC addresses—from my web server whenever the user taps “Refresh.” Once the list is loaded, the app must open a stable serial-over-BLE link to a nearby ESP32 running the NimBLE stack. Connection drops or pairing loops are show-stoppers, so please focus on rock-solid reconnection logic. After the ESP32 exchange is complete, the same app should be able to send a printable receipt to a portable Bluetooth printer; I already have the manufacturer’s Android SDK and sample code for that portion. Key points you will work on • Manual server call also server or sql data. • Parse the returned MAC list and connect only to those devices, not to every advertiser i...

ive attached my current code and what dial currently looks loke. im trying to get it more likt the other pic, so looking for someone who can update code to match the image. My mobile application already runs on both iOS and Android, but the current remote-control module still feels sluggish and unreliable. I’m looking for a developer who can dive straight into the existing codebase, profile the remote layer, and deliver cleaner, faster logic that keeps connections stable no matter which platform the user is on. You’ll receive full access to the current Swift/Kotlin repositories, plus API documentation for the signaling backend. I’m open to any architectural tweaks—whether that’s refining Bluetooth/Wi-Fi handling, tightening socket routines, or introducing bet...