Freelancers using Ardiuno in NigeriaFreelancers using Ardiuno in Nigeria
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Adeagbo AbdulJeleel's avatar
Adeagbo AbdulJeleel
Lagos, Nigeria
Designing PCBs, electronics, embedded and product design
New to Contra
Designing PCBs, electronics, embedded and product design
Cover image for IoT-Based USD to IDR Exchange
IoT-Based USD to IDR Exchange Rate Display Using Bank BCA Exchange Rates Real-Time Bank BCA USD/IDR Exchange Rate Monitor using ESP32 and OLED Display with live internet updates. Features: • Real-time USD/IDR exchange rate display • ESP32 WiFi connectivity • OLED SSD1306 interface • Automatic online data refresh • Lightweight and low-power system • Compact embedded monitoring device #ESP32 📡 | #IoT 🚀 | #EmbeddedSystems 💻 | #Arduino ⚙️ | #Programming 📚
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Cover image for Raspberry Pi CM5 IO Board
Raspberry Pi CM5 IO Board with USB 2.0 OTG The official Raspberry Pi Compute Module 5 IO board doesn’t include the USB 2.0 path switch IC, which was in its elder brother CM4 IO board. Also, it uses CM5’s own CC control pins for USB Type C port. To make my design compatible with both CM4 and CM5, I integrated an USB 2.0 switch IC in the similar way, but with a little bit different configuration. The board need to have 2 x USB 2.0 ports. So I needed to add an USB 2.0 hub IC and an USB path switch chip, similar to the official Raspberry Pi CM4 IO board. But I needed to modify it to use an USB Type-C port and use CC control pins of CM5. The elder CM4 series modules didn’t have CC control pins. Thus, I also added DNP resistors, where I can solder 5.1K resistors for using CM4 on this board. The official Raspberry CM4 IO board used VBUS to automatically switch the OTG config via USB_OTG_ID pin. But on my design, +5V line may be supplied from external power source. It means I should use 5A rated ideal diode. But the requirements was only using USB 2.0 as normal Host, instead of standard USB OTG compatible port. As we anyway need BOOT button to set the compute module into flashing mode, I decided to use a DPDT slide switch instead of tactile boot button. In this way, I could manage setting BOOT and OTG_ID flags using a single switch sliding.
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Cover image for Arduino Nano-Based PCB Design I designed
Arduino Nano-Based PCB Design I designed a custom PCB built around the Arduino Nano, creating a compact hardware platform for integrating the microcontroller with supporting electronic components and external peripherals. The design involved organizing the Arduino Nano interface, power connections, input/output lines, and supporting circuitry into a clean and practical PCB layout. I focused on efficient component placement, clear signal routing, reliable power distribution, and maintaining a layout that is easy to assemble and integrate into a larger embedded system. This project strengthened my experience in Arduino-based hardware development, PCB layout, embedded electronics, component integration, and microcontroller interfacing.
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Cover image for Raspberry Pi Zero Relay Board I
Raspberry Pi Zero Relay Board I designed a custom Raspberry Pi Zero relay control board that combines a Raspberry Pi Zero development platform with multiple relay outputs for controlling external electrical loads. The objective of the project was to allow the Raspberry Pi Zero to electronically control the relays, providing a practical interface between the low-voltage digital signals from the Pi and connected external devices. My work involved developing the PCB layout around the Raspberry Pi Zero, organizing the relay circuitry, and carefully routing the control and power connections. Particular attention was given to component placement, signal routing, power distribution, isolation between the control circuitry and relay sections, and maintaining a clean, reliable board layout. The project provided valuable experience in Raspberry Pi hardware integration, relay control, PCB design, digital interfaces, and hardware prototyping, while demonstrating how a compact embedded platform can be integrated with a dedicated control board for real-world automation applications.
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Ardiuno(13)
Abdulbasit Ogundiran's avatar
Abdulbasit Ogundiran
Nigeria
Cybersecurity Analyst | Cloud Security & IT Operations
New to Contra
Cybersecurity Analyst | Cloud Security & IT Operations
Cover image for This is a project that
This is a project that I titled Low-cost AI Power theft detection that detects electricity theft, bypass of electricity, high electricity usage, with the help of TinyML integrated and trained into the esp32 and alert with the help of the buzzer and shows in a well polished web dashboard, sensor used would be communicated after the project as been finally built and ready for implementation.
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Cover image for This is a project I
This is a project I titled: Development of High Blood Pressure (HBP) Prediction and Monitoring System Using CNN-BiLSTM and Fuzzy Logic in Real Time Still undergoing development: 1. The Flask backend is operational with an integrated CNN-BiLSTM prediction pipeline and a fuzzy logic module for health risk assessment, along with REST API endpoints for communication. 2. A Flutter mobile application has been developed, featuring a dashboard that displays various health metrics and successfully communicates with the backend. ‎3. Hardware development includes the successful configuration of the ESP32 microcontroller, integration of an OLED display, and testing of the MAX30102 PPG sensor for real-time waveform acquisition. 4. AI integration involves transmitting real PPG data from the MAX30102 sensor to the Flask backend, where the CNN-BiLSTM model generates blood pressure predictions, which are then returned to the ESP32 and backend. ‎5. The complete communication pipeline from sensor to monitoring dashboard has been established, confirming successful real-time signal processing for blood pressure prediction. ‎6. Ongoing work focuses on sensor stabilization, hardware integration, synchronization of live updates, alert mechanisms, power management, and final system packaging. 7. The core real-time HBP prediction system using CNN-BiLSTM is implemented and tested, with the project now in the optimization stage before final deployment. Willing to hear suggestions and getting more gigs to work with and solving of problems
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Cover image for My lab environment, and this
My lab environment, and this is a project giving to me by a client to test my ethical hacking skill cracking an encrypted .rar file open and seeing the content inside, I was authorised and I confirmed it was his before I performed my attacks. And I successfully hacked into it. Not to be disclosed cause of what it contains and for privacy but this was when I was working on the project. So am opened to share my expertise and solving problems in whatever you bring to my table. Lekk's Forge got you covered.
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Cover image for A fully functional health website
A fully functional health website for a project given to me to work on by a client but still on development stage. It shows a lot of detailed information and a graph to express the blood pressure trends, with the help of AI prediction using various models to make this possible. Will deliver soon and talk more about it when done.
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Ardiuno(2)
Chidinma Ekuma's avatar
Chidinma Ekuma
Abuja, Nigeria
Software engineer building intelligent systems
New to Contra
Software engineer building intelligent systems
Cover image for Internet of Things
Internet of Things
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Cover image for Mobile App Development
Mobile App Development
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Cover image for Presenting to you, my website
Presenting to you, my website portfolio. Click on this link Chidinma's Porfolio (http://ekumachidinma.netlify.app) and get to know more about me.
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Cover image for Technology has always been where
Technology has always been where my passion lies. Although I spent the past year working outside the tech industry, the experience reminded me that my true passion is building technology that solves real-world problems. Today, I'm excited to fully recommit to my journey as a software developer. My experience includes: 💻 Web Development 📱 Flutter Mobile Development 🤖 AI Applications 🧠 Data Analysis, Machine Learning & Deep Learning Some of the projects I've built include: • AI Email Response Generator • Traffic Sign Recognition System • Child Tracking System (Flutter, Firebase, GPS & IoT) • Responsive web applications I'm currently open to software development, AI, and mobile development opportunities where I can contribute, learn, and grow. If you're hiring or know of any opportunities, I'd love to connect. 🚀 Explore my portfolio: My Portfolio Website (https://ekumachidinma.netlify.app/)
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Ardiuno(2)
Daniel Atemenu's avatar
Daniel Atemenu
Lagos, Nigeria
A software engineer , Hardware Design Engineer| IOT engineer
A software engineer , Hardware Design Engineer| IOT engineer
Cover image for nRF52840 Bluetooth Wearable Device
nRF52840 Bluetooth Wearable Device
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Cover image for Multistore Pos Application
Multistore Pos Application
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Cover image for A Revit, AutoCAD, CAD software Plugins development
A Revit, AutoCAD, CAD software Plugins development
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Cover image for A CDL driving license Educational App for drivers
A CDL driving license Educational App for drivers
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Ardiuno(1)