Freelancers using MATLAB in LagosFreelancers using MATLAB in Lagos
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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 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 Beaglebone Based USB Device
Beaglebone Based USB Device
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Cover image for 🚀 Project Completed | ESP32-Based
🚀 Project Completed | ESP32-Based Interactive Virtual Pet 🐾🤖 I’m excited to share my latest Embedded Systems & IoT project, an interactive virtual pet built around the ESP32 that can sense its environment, process real-time data, and respond through expressive animations and behaviors. 🌡️💡 The project combines multiple sensors with a 128×64 OLED display to create a responsive digital companion that reacts dynamically to environmental conditions. 🔧 Key Features 🥰 Animated virtual pet with multiple expressions and behaviors 🌡️ Real-time temperature & humidity monitoring using DHT11 💡 Light/dark detection using LDR 👋 Object detection using an IR sensor 📏 Proximity detection using an ultrasonic sensor 😴 Automatic sleep mode in dark conditions 🥵 Sweating animation when the temperature becomes high 😍 Excited reaction when an object approaches 🟢🔴 Temperature-based safety indicators using LEDs 🕒 Real-time clock using a TM1637 4-digit display 📡 ESP32 Wi-Fi connectivity 🌐 HTTP-based web interface for live sensor data ⚡ Non-blocking animations and real-time sensor processing 🛠️ Technologies & Components ESP32 | Embedded C/C++ | Arduino | Wi-Fi | HTTP | DHT11 | LDR | IR Sensor | Ultrasonic Sensor | TM1637 | SSD1306 OLED | I2C | Sensors & Actuators This project gave me valuable hands-on experience in microcontroller programming, sensor integration, OLED graphics and animations, real-time systems, wireless communication, and embedded web applications. What makes this project particularly interesting to me is the combination of: Sensing → Decision Making → Interaction Instead of simply displaying sensor readings, the system interprets environmental data and transforms it into visual and behavioral responses, making the pet feel more responsive, interactive, and alive. 🧠⚡ 🚀 I’m looking forward to adding more intelligence, animations, and interactive features to this little companion while continuing to build practical and innovative Embedded & IoT systems. #ESP32 (https://www.linkedin.com/search/results/all/?keywords=%23esp32&origin=HASH_TAG_FROM_FEED) #EmbeddedSystems (https://www.linkedin.com/search/results/all/?keywords=%23embeddedsystems&origin=HASH_TAG_FROM_FEED) #EmbeddedC (https://www.linkedin.com/search/results/all/?keywords=%23embeddedc&origin=HASH_TAG_FROM_FEED) #IoT (https://www.linkedin.com/search/results/all/?keywords=%23iot&origin=HASH_TAG_FROM_FEED) #Arduino (https://www.linkedin.com/search/results/all/?keywords=%23arduino&origin=HASH_TAG_FROM_FEED) #OLED (https://www.linkedin.com/search/results/all/?keywords=%23oled&origin=HASH_TAG_FROM_FEED) #Electronics (https://www.linkedin.com/search/results/all/?keywords=%23electronics&origin=HASH_TAG_FROM_FEED) #EmbeddedEngineer (https://www.linkedin.com/search/results/all/?keywords=%23embeddedengineer&origin=HASH_TAG_FROM_FEED) #IoTProjects (https://www.linkedin.com/search/results/all/?keywords=%23iotprojects&origin=HASH_TAG_FROM_FEED) #Microcontrollers (https://www.linkedin.com/search/results/all/?keywords=%23microcontrollers&origin=HASH_TAG_FROM_FEED) #DHT11 (https://www.linkedin.com/search/results/all/?keywords=%23dht11&origin=HASH_TAG_FROM_FEED) #Sensors (https://www.linkedin.com/search/results/all/?keywords=%23sensors&origin=HASH_TAG_FROM_FEED) #EmbeddedProgramming (https://www.linkedin.com/search/results/all/?keywords=%23embeddedprogramming&origin=HASH_TAG_FROM_FEED) #EngineeringProjects (https://www.linkedin.com/search/results/all/?keywords=%23engineeringprojects&origin=HASH_TAG_FROM_FEED) #TechProjects (https://www.linkedin.com/search/results/all/?keywords=%23techprojects&origin=HASH_TAG_FROM_FEED) #LearningByBuilding (https://www.linkedin.com/search/results/all/?keywords=%23learningbybuilding&origin=HASH_TAG_FROM_FEED)
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Cover image for STM32 Development & MAX485 PCB
STM32 Development & MAX485 PCB Design I designed a custom STM32-based PCB featuring multiple MAX485 transceivers for reliable RS-485 communication. The project involved working with a relatively high component count and carefully organizing the MAX485 interfaces within the available board space. Component placement and routing required careful planning to maintain a clean, functional, and manufacturable layout. It was a challenging project that strengthened my experience in STM32 hardware design, RS-485 communication, component organization, and PCB layout optimization.
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MATLAB(5)
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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MATLAB(1)