Leoncio Hermosillo
Computer Engineering Graduate & Embedded Systems Enthusiast
Building the future where hardware meets software. Recent UC Irvine graduate, passionate about low-level programming, algorithm design, and creating things that fly.
Computer Engineering Graduate & Embedded Systems Enthusiast
Building the future where hardware meets software. Recent UC Irvine graduate, passionate about low-level programming, algorithm design, and creating things that fly.
Deep dive into microcontrollers, RTOS, and hardware-software integration. From Arduino to ARM Cortex, I love working at the intersection of hardware and code.
Fascinated by the theoretical foundations of computer science. Analyzing complexity, designing efficient solutions, and solving challenging problems on LeetCode.
Building and flying custom FPV racing drones. From flight controllers to video transmission, combining my engineering skills with an adrenaline-fueled hobby.
Exploring the frontiers of AI and neural networks. From computer vision to deep learning, always eager to learn and implement cutting-edge techniques.
PCB design, circuit analysis, and digital logic. Understanding how electrons move to make computation possible, one transistor at a time.
Always looking for ways to push boundaries and create something new. Whether it's optimizing code or building the next cool gadget.
Favorite Topics: Trees, Graphs and working on loving Dynamic Programming!
Built multiple custom racing drones from scratch including a 7-inch long-range build. Features ELRS radio system, an analog FPV system, custom soldering work, and resin-printed protective guards. Next step: adding AI layer for object tracking with a digital camera instead.
Built an autonomous drone capable of GPS waypoint following using ArduPilot and Mission Planner. Features WiFi telemetry and precision navigation capabilities.
Implemented a multi-layer perceptron in pure C++ without external libraries. Includes backpropagation, different activation functions, and MNIST training. Adding links soon, lost access to laptop with code. Didn't upload to GitHub :(
ESP32-based weather monitoring system with real-time data logging, web interface, and mobile notifications. Features low-power design and solar charging.
Documentation for some robotics projects to come. Some trivial autonomous warehouse robot test cases below:
ROS-based warehouse robot performing trivial test cases
Click on image/video to zoom in +
I should probably upload more onboard cam shots. Will do, soon, been busy. Excuse my doggies. This is a video, click below.
This was how it looked right after being assembled. Later I redid the wiring for a cleaner look.
Once my wallet healed after the first drone, I made another one with custom resin-based protective guards for durability. My friend let me use his resin printer :)
Wanted more scenic footage, so I got this as a gift
Wiring for my 5 inch prop build
High-quality FPV goggles with a comfortable fit and excellent optics.
A popular and versatile transmitter with excellent range and customization options.
A high-performance long-range receiver for FPV drones. This baby slaps onto the back of your transmitter controller.
A durable and lightweight frame designed for optimal performance in FPV racing.
A high-quality FPV camera with excellent low-light performance.
A powerful STM32 F405 based flight controller for FPV drones.
A compact and efficient electronic speed controller for FPV drones.
A high-performance video transmitter for FPV drones.
A high-performance video transmitter for FPV drones.
A high-performance long-range receiver for FPV drones.
A compact GPS module for precise positioning and navigation.
High-performance antennas for improved video transmission range.
High-performance brushless motors for FPV drones. I used these in my 7-inch prop build.
Additional high-performance brushless motors for FPV drones. I used these in my 5-inch prop build.
Really depends on use case. More cells == more power == stronger motors. More mAh == longer flight times.
Choose propellers that match your drone's size and motor specifications.
This was very scary doing as the pads on the FC and ESC are very small and my soldering tip is very old.
Some of the smallest soldering I had done at that time. Remember being very proud.
Planning on integrating an AI layer for advanced flight capabilities. This is the AI VisionCube, used for target tracking.
Next Goal: Implementing AI-based object tracking and autonomous flight modes
Main flight controller with built-in OSD and current sensing
Electronic Speed Controller for brushless motors
Flight controller with screws removed for maintenance
Battery connector pins soldered to the flight controller
View of all pins soldered to the flight controller
Fully assembled flight controller. Ready to plug in with connectors.
Electronic Speed Controller (ESC) mounted on the motor
Getting the right motor wire length is always tough.
For modularity, the camera can be easily removed and replaced with dupont connectors.
Fully assembled autonomous drone ready for GPS waypoint missions.
Close-up view of the fully assembled drone.
Closer view of GPS and receiver pins.
WiFi telemetry module mounted for real-time data transmission.
ExpressLRS long-range receiver for reliable control
For modularity, the receiver can be easily removed and replaced with dupont connectors.
Didn't get to install this, but it can provide advanced autonomy.
WiFi telemetry system for real-time mission data and control
Zoom out of WiFi telemetry.
Ground control software for planning and monitoring missions. This is an example screenshot. Our waypoints at a different location.
Project members celebrating our successful mission.
MATEK F405-WMN with STM32F405RGT6, OSD, Blackbox, 132A Current Sense
XING2 1404 3800KV Ultralight Brushless Motors for 3-4S LiPo
20A Brushless ESCs with DSHOT BLHeli_S for 2-4S LiPo
DIYmalls BE-880 GPS Receiver with Compass, 38400bps
MOD-L Modular Ultralight Frame (3-5 inch compatible)
HAPPYMODEL ELRS EP2 RX + RadioMaster Pocket Controller
Wolfwhoop WT07 5.8GHz 25mW VTX + 600TVL Camera
Seeed Studio XIAO ESP32C3 MCU Board
Zeee 2S 2200mAh 7.4V 50C LiPo with XT60 Connector
100W LED Digital Soldering Iron with Ceramic Heater
49-in-1 Small Screwdriver Set with Torx bits
Wire Stripper/Cutter (16-26 AWG) + Diagonal Cutters
Adjustable Helping Hand with Magnifying Glass
B6 Mini Balance Charger + Cellmeter 7 Capacity Checker
Fireproof LiPo Safe Bag + Anti-Static Tweezers
Total Investment: ~$500 for complete autonomous drone system
Always excited to discuss embedded systems, algorithms, drones, or any cool tech projects. Feel free to reach out if you want to collaborate or just chat about engineering!
📍 Currently in Riverside, CA | Open to internships, full-time roles and collaborations