Freelancers using Ardiuno in IkejaFreelancers using Ardiuno in Ikeja
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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)
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)