Raspberry Pi Projects

opportunity

MQTT best practices - Local LAN with NODE-RED

Secure MQTT Setup for IoT Devices Project goal Implement best practices for a secure and efficient MQTT environment to enable seamless device communication and authentication. Scope of work - Set up MQTT Broker on a dedicated Windows computer. - Enable Raspberry Pi and ESP32 devices to connect and authenticate without password disclosure. - Ensure secure communication between devices and MQTT Broker. - Implement authentication for devices on the production MQTT Broker. - Follow SOPs and operations for device communications. Read more Additional information - Node-Red flow example provided and tested. - Documentation, code examples, and required assets are complete. Platform Raspberry Pi, ESP32 Developer expertise Networking, IoT Budget $300 Deliver on July 24, 2025

opportunity

MVP Smart Contract & Backend on Polygon (UMA Protocol)

PredictPiX is a decentralized prediction market platform where all user transactions are conducted using Pi Network's native currency. Users engage with the platform through the Pi Browser, and all prediction market logic, including creation, resolution, and settlement, is powered by smart contracts deployed on the Polygon network. UMA Protocol's Optimistic Oracle and LongShortPair contracts will be used to ensure secure, decentralized resolution, unless the selected developer has another option that they are more familiar with. We have no interest in AMMs or liquidity pools. All blockchain gas fees are paid from a dedicated wallet owned by us, which is auto-funded via a % of platform fees. Objective: We are seeking a qualified blockchain developer to: Deploy UMA's LongShortPair smart contracts and Optimistic Oracle on Polygon. Integrate smart contract calls into our existing backend. Implement backend wallet logic to pay Polygon gas fees from our owned wallet. Ensure full alignment with Pi-only frontend logic (users never interact with Polygon or MATIC). Scope of Work: Smart Contract Work Deploy and configure UMA LongShortPair and Oracle contracts on Polygon mainnet. Create 2–3 example markets with testable endpoints for prediction and resolution. Backend Integration Modify existing backend to: Translate Pi user actions into Polygon contract calls Handle predictions, resolutions, and result retrievals Connect to PI Network with wallet and transaction abilities through their SDK Implement wallet gas fee automation (including tracking and auto-funding) Testing & Deployment Full testing with mocked and live Pi transactions Documentation for admin and future devs Optional (but preferred): Security best practices for gas wallet protection Transaction logging and error handling Deliverables: Deployed and verified contracts on Polygon mainnet Updated backend codebase with contract interaction logic Working front and backend integration Gas wallet automation logic Basic admin dashboard or CLI for market creation and resolution control Deployment and testing documentation Timeline: Estimated completion: 3–4 weeks Start date: ASAP Budget: Open to proposals, but targeting $1,000 - 1,375 CAD for MVP build (milestone-based). We would like to offer partial payment in PI to interested Devs. To Apply: Please submit: A short proposal outlining how you'd approach the project Your estimated cost and timeline

Breadboard Prototype for Wearable Device (with Wiring & Pin Map)

I need someone to build a complete breadboard prototype for a wearable device called ShiftAid. The prototype will include all components listed below, and I want a clear wiring diagram, pin mapping, and basic testing setup so I can use it to write my code. ⸻ ✅ What You’ll Deliver • Full breadboard wiring diagram • Resistors included where required • A labelled GPIO pin map for the Raspberry Pi Pico W • Breadboard-ready schematic • Photos or render of breadboard layout (Fritzing preferred) • List of components used (with optional links) • Optional: short MicroPython or CircuitPython test code for buttons, LED, and display ⸻

Rasberry pi 4 - OpenMPTCProuter and VPS

Looking for someone to bond multiple internet connections to build one strong connection for my livestream. Want it all setup so I just power it on and it works.

opportunity

MVP Smart Contract & Backend on Polygon (UMA Protocol)

PredictPiX is a decentralized prediction market platform where all user transactions are conducted using Pi Network's native currency. Users engage with the platform through the Pi Browser, and all prediction market logic, including creation, resolution, and settlement, is powered by smart contracts deployed on the Polygon network. UMA Protocol's Optimistic Oracle and LongShortPair contracts will be used to ensure secure, decentralized resolution, unless the selected developer has another option that they are more familiar with. We have no interest in AMMs or liquidity pools. All blockchain gas fees are paid from a dedicated wallet owned by us, which is auto-funded via a % of platform fees. Objective: We are seeking a qualified blockchain developer to: Deploy UMA's LongShortPair smart contracts and Optimistic Oracle on Polygon. Integrate smart contract calls into our existing backend. Implement backend wallet logic to pay Polygon gas fees from our owned wallet. Ensure full alignment with Pi-only frontend logic (users never interact with Polygon or MATIC). Scope of Work: Smart Contract Work Deploy and configure UMA LongShortPair and Oracle contracts on Polygon mainnet. Create 2–3 example markets with testable endpoints for prediction and resolution. Backend Integration Modify existing backend to: Translate Pi user actions into Polygon contract calls Handle predictions, resolutions, and result retrievals Connect to PI Network with wallet and transaction abilities through their SDK Implement wallet gas fee automation (including tracking and auto-funding) Testing & Deployment Full testing with mocked and live Pi transactions Documentation for admin and future devs Optional (but preferred): Security best practices for gas wallet protection Transaction logging and error handling Deliverables: Deployed and verified contracts on Polygon mainnet Updated backend codebase with contract interaction logic Working front and backend integration Gas wallet automation logic Basic admin dashboard or CLI for market creation and resolution control Deployment and testing documentation Timeline: Estimated completion: 3–4 weeks Start date: ASAP Budget: Open to proposals, but targeting $1,000 - 1,375 CAD for MVP build (milestone-based). We would like to offer partial payment in PI to interested Devs. To Apply: Please submit: A short proposal outlining how you'd approach the project Your estimated cost and timeline Any questions or assumptions you'd like clarified

opportunity

Custom Android ROM for Raspberry PI 5.

Require an Custom Android Image to be compiled for the Raspberry Pi 5 ARM64 environment. Requirements include: - Must be allowed to be distributed commercially on a Raspberry Pi 5 platform - Must support Qt runtime environment for playstore apps that require Qt environment - Bluetooth, Location services and GPS support - USB Serial capabilities - Rooting must be a possibility as some APK's will require access to Raspberry Pi Os for shutting the device down. - DSI Display support would be great! - Custom boot animation zip must be included in the compiled image Playstore access is not required as this is a standalone offline kiosk app.

Self hosted podcast recording & RSS URL hosting

Using a public google I cal url to trigger recording to ffmpeg for each calendar event and make folder and recording each episode to that folder weekly. provide aq public URL RSS address for that folder so I can use on my website to feed podcast episodes, I have been able to make everything and its quite quick, but the issue im having is making podcast generator or Castopod public, I don't want to port forward as I wish to use the host machine at the studio. I had been using cloud flare and duck dns to create a tunnel but will need a permeant free one made. 60 second recording test once on boot. automatically boots script on power up. no port forwarding , use at any location . Raspberry Pi3 with local external storage to host public mp3 from stream recording. maybe 30-60 minutes work . will provide remote log in on the Pi 3 Thank-you for your interest, possible regular monthly maintenance work plus small other projects if the first job works out well.

Raspberry Pi 3, 4, and 5 Software Development

UPDATED (Flowchart) We require a skilled freelancer to develop Raspberry Pi 3, 4, and 5 software that meets the specified functional requirements. The software should interact with various hardware components, process data efficiently, and ensure smooth operation on all specified Raspberry Pi models running the latest Raspberry Operating System. Fundamentally, a scripted setup for Raspberry Pi hardware to automate being added a specific environment, and this initial setup should be automated as much as possible, ready for further configuration tasks. MUST be compatible and work with Node-Redscape as a priority (see references below). Rsync automation initially to copy specific files to assist with setup (if needed)

opportunityurgent

I need to assemble a widget for an interactive piece of theater

Looking for a London-based hardware maker with experience in ESP32, LED control, haptics, and enclosure prototyping. Bonus if you’re into retro/interactive design. Goal is to prototype a handheld controller with crank, LED buttons, and sensors. I have the project thought out in ChatGPT and most of the pieces sourced. Need someone with experience to assemble this and program it. Happy to go with another design if the GPT thing isn't up to your specs. This is for a hybrid live/metaverse musical and the widget will control the audience's interaction with the piece. We are a disability/accessibility forward production with funding. If you want to be involved in the future of interactive theater and entertainment, please get in touch. Happy to negotiate price. Here's a list of components suggested by GPT (based on my needs): 1. Hardware Components You'll need: Microcontroller (e.g., Arduino, ESP32, Raspberry Pi Pico) Haptic Feedback Motor (e.g., vibration motor or haptic actuator) LEDs (RGB or standard) Buttons (momentary push buttons) Rotary Encoder / Crank Sensor (to detect movement of the crank) Wireless Communication (Bluetooth, Wi-Fi, or RF module) Power Supply (battery-powered or wired)

opportunity

RFP – PI Network-Based Event Prediction DApp

We are looking for an experienced blockchain developer or a small development team to build a streamlined event prediction market MVP within 4–6 weeks. The platform will leverage PI Network wallets exclusively for user deposits, withdrawals, and authentication, with backend processes executed efficiently using Polygon blockchain smart contracts. Estimated Budget: $2500 - $3,000 CAD (negotiable based on experience and proposal quality) Scope of Work The MVP must provide essential prediction market functionalities with a strong emphasis on simplicity, user-friendliness, and compliance: Core Functionalities Event Prediction Engine (Binary Outcomes) Users predict YES/NO outcomes on predefined events using PI. Events approved and managed via admin interface. PI Network Wallet Integration Seamless deposit and withdrawal via PI Network Wallet. PI transactions managed securely off-chain until settlement. Polygon Smart Contracts Simple, transparent smart contracts for outcome verification and PI settlement. Backend covers blockchain gas fees (no user-facing MATIC fees). Admin Dashboard Interface for managing events, user disputes, and monitoring transactions. Admin approval required for event creation to ensure compliance. Automated Market Settlement Settlement initiated automatically based on user consensus. Admin intervention for resolution disputes. Technical Requirements Blockchain & Wallets: PI Network Wallet SDK, Polygon Blockchain (Solidity), Web3.js/Ethers.js Backend: Node.js or Python (FastAPI/Django), PostgreSQL/MongoDB Frontend: React.js/Vue.js compatible with PI Browser Open Source Usage: Preference for legally licensed or open-source libraries Compliance and Regulation The platform must adhere strictly to all applicable regulations and best practices regarding blockchain and prediction markets. Explicit gambling terminology is to be avoided; use "event prediction" or "forecasting" instead. Compensation & Partnership Options We offer flexible compensation structures: Milestone-based Payments Partial or full compensation in PI (optional) Opportunity for long-term partnership with a potential revenue-sharing model We seek practical, efficient, and regulation-compliant solutions with an open and collaborative development approach. Interested developers or teams are encouraged to propose their preferred working arrangements and provide examples of relevant previous projects.

opportunity

Raspberry Pi / Arduino Engineer – Smart Bottle

Description: We are looking for an experienced Raspberry Pi or Arduino expert to help us design and execute a real-time cryptocurrency display integrated into a luxury bottle design. Our team is responsible for the industrial and aesthetic design, but we need a technical expert to bring the electronics to life. The ideal candidate will work closely with us to develop a fully functional prototype and assist with production feasibility. Project Scope: Select and integrate a minimalist OLED or e-ink display into the bottle. Use a Raspberry Pi, ESP32, or Arduino to fetch and display real-time cryptocurrency wallet data. Ensure low power consumption, possibly using a rechargeable battery or wireless charging. Develop the software to connect to APIs (CoinGecko, Binance, Etherscan, etc.) and display wallet balances. Advise on the best PCB design and wiring for a compact setup. Work with us on feasibility for small-scale production. Ideal Candidate: ✅ Experience with Raspberry Pi, Arduino, or ESP32 for IoT and embedded projects. ✅ Strong understanding of small OLED/TFT/e-ink displays and microcontroller programming. ✅ Knowledge of Wi-Fi-enabled real-time data fetching and API integration. ✅ Familiarity with battery-powered, low-energy IoT devices. ✅ Comfortable working alongside designers and industrial engineers. ✅ Ability to troubleshoot and iterate on prototypes. Deliverables: 1️⃣ Working prototype with a functioning screen displaying live crypto values. 2️⃣ Optimized circuit design and component selection. 3️⃣ Guidance on scaling the prototype for production. Budget & Timeline:

IoT Embedded Engineer – Smart Street Lighting

Job Responsibilities: Design and develop embedded hardware and software for Smart Street Lighting. Integrate LoRa, Zigbee, and Wi-Fi modules for seamless communication. Implement power-efficient dimming and switching mechanisms. Develop sensor-based fault detection and real-time monitoring systems. Optimize data transmission and cloud integration for remote control. Work with high-load relays to manage grouped streetlight control. Conduct prototype testing and validate field deployments. Troubleshoot issues in hardware and firmware, ensuring long-term system reliability. Required Skills: ✅ Embedded Systems: Experience with ESP32, Raspberry Pi, and STM32. ✅ Wireless Communication: LoRa, Zigbee, MQTT, and LPWAN. ✅ IoT & Cloud: Experience with AWS IoT, Azure IoT, or Google Cloud IoT. ✅ Programming: C, C++, Python, and firmware development. ✅ Circuit Design & Power Management: Understanding of PCB layout, relays, and AC/DC circuits. ✅ Data Handling: Experience in real-time data collection, processing, and fault prediction. ✅ Field Testing & Deployment: Ability to conduct real-world validation of smart lighting setups. (Guiding Engineer would be suffice) Preferred Qualifications: Hands-on experience in smart city projects or energy management systems plus. Familiarity with power distribution networks and smart metering. Knowledge of edge AI for predictive maintenance and anomaly detection.

opportunity

UK Building Regulations drawings

I need full-plan building regulations drawings to split a Class E ground-floor shop and first-floor space into two separate units. The ground floor will remain a shop and upstairs will be an office. The office has clear and simple separate access. About 110m2 on the ground floor and 85m2 on top floor. I will only consider specialists based in UK and who have PI insurance. I will have cad plans ready along with simple point cloud scan

Python modbus on sd card

I have failed with the limited time available to load 8gb microSD with pyserial to run modbus, modbus_relay, modbus_boards. Modbus & pyserial have to run under (venv) as the install may break some libraries. Despite setting the paths etc I have failed to escape the apt-get/pip, pip3 pipx errors, now other pressing projects can't be ignored. This OS is to run on Pi 3 B, B+ and will be driving chinese RS485 8 way relays. This has to be UK based as I will need the ready imaged SD poated, too large to download. To anyone more practiced this should be a 1hr job - I think !

MQTT-Controlled Gapless Video Playback on Raspberry Pi 4 & 5

We require a skilled freelancer to develop a script or program that allows a Raspberry Pi 4 and 5 to play a specified MP4 video file with audio from a local SD card directory on a specific HDMI port in full-screen mode without any controls or borders with seamless transitions where required. The video playback will be triggered via an MQTT message specifying the file name (see node-Redscape in references below for the model that will be employed) The information and outline in this document constitute a ‘test’ environment, and various details and settings will change. The project must allow this information to be changed easily, preferably in one configuration file in plain text for operators with limited technical knowledge. UPDATED with FLOW Diagram

Artist Impression Exterior Building

I am looking for someone who can create an image of our existing building exterior and add in a rooftop bar to the building as if it were to be built at a later date. The photos include one of the building (The Pied Bull) and an example of the style we would like - if possible to add in a glass walled rooftop bar built up from the existing roof of the Pied Bull.

opportunity

Remote monitor with Arduino or similar

I need equipment specification and programming to remotely monitor 2 x 0-10v signals, and to be able to remotely adjust a simulated 10k pot I'm thinking maybe an Arduino or Pi? it will need to connect to the internet (ideally through a SIM) and we would like to be able to graph the remote signals as well as view in real time. I'm unsure how we would do this, via a cloud service or something? Please provide a proposal and recommendation for the hardware required, programming, and a web platform to view the results on. Web platform should ideally be free or low cost.

British cool home wear online store

I'm a designer and am in the process of setting up my Shopify online store. The products that have been allocated to my store are dreadful and I am deleting the majority. I am setting up accounts with quality British manufacturer's who will drop ship to my British clients. I am concentrating on the UK atm due to the complexities of international taxes etc, I want to keep it simple. I want a logo which represents a cool product lifestyle store, I will categorise quality products such as sofa's, lighting etc and also a white good collections such candles and beauty products so I want the logo to be versatile and stylish. Ref the palette, I'm inclined to opt for a rich sexy luxury feel, I do not want primary colours as they look cheap. I think Lifestyle should be in a signature font with the emphasise being on House 2 Home. I like the idea of the 2 being the pop, connecting the scene. I like deep blue steel, dark raspberry, metallic gun metal grey, dark sandstone gold, colours that are not widely used and look delicious together! I have a lot of work to do on my site but I have already started to tear it apart. I'm in the process of arranging accounts and selecting quality products that will appeal to a design conscious audience. I need a logo for my website which I can easily transfer to the invoices and emails. www.house2homelifestyle.com -- open to discussions on a fixed price basis!!! Thank you, Kate