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Concept explainers across six clusters: the ideas behind the builds. Free to read, no account needed.
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Control a Drone With Your Brain
Yes, you can fly a drone with an EEG brain-computer interface. Here's how it actually works, what's realistic, and how you'd build a simple one.
EEG & BCI·4 min read·Updated AUG 2026
01 · What you'll learn
Fundamentals
The electronics behind every build: voltage, current, Ohm's law, the passives.
02 · What you'll learn
EEG & BCI
How EEG and brain-computer interfaces actually work.
- What Is a Brain-Computer Interface?3 min
- What Is EEG & How Does It Work?3 min
- How to Build an EEG Brain-Computer Interface4 min
- EEG Frequency Bands & Filtering3 min
- Motor Imagery & the Mu Rhythm5 min
- EEG Electrodes & the 10-20 System3 min
- EEG Safety & Isolation5 min
- Biopotential Analog Front-Ends3 min
- The ADS1299 Explained4 min
- Killing EEG Noise: 50/60 Hz & the Right-Leg Drive6 min
- Turning EEG Into a Command: CSP & EEGNet4 min
- Control a Drone With Your Brain4 min
03 · What you'll learn
PCB Design & Fabrication
Turn a schematic into a real, fab-ready board: layout, routing, planes, and the files a factory needs.
- From schematic to board: the layout workflow3 min
- Footprints and land patterns3 min
- Component placement3 min
- Routing traces: width, current, and vias3 min
- Ground and power planes on a real layout3 min
- PCB stackups: layers, materials, impedance3 min
- Design rules and DRC3 min
- Silkscreen, soldermask, and polarity marks3 min
- Gerbers and the fab package3 min
- DFM and ordering a board3 min
- Soldering and assembly basics3 min
- Board bring-up: first power4 min
04 · What you'll learn
Communication & Interfaces
How the chips on a board talk to each other: UART, SPI, I2C, and USB, in plain terms.
05 · What you'll learn
Power & Batteries
Powering a board that runs: batteries, regulators, and how to size a supply.
- Power rails and a power budget3 min
- Batteries 1013 min
- LiPo and Li-ion safety3 min
- Battery charging3 min
- Linear regulators (LDO)3 min
- Buck regulators (step-down)3 min
- Boost regulators (step-up)3 min
- LDO vs switcher: picking one3 min
- Reverse-polarity and inrush protection3 min
- Power sequencing and soft-start3 min
- Measuring power and battery runtime3 min
06 · What you'll learn
Microcontrollers & ESP32
What a microcontroller is, and how the ESP32 reads pins, sensors, and time.
- What is a microcontroller?3 min
- GPIO: reading and driving pins4 min
- The ADC: reading an analog voltage3 min
- PWM: a fake analog output3 min
- Boot and strapping pins3 min
- Flashing firmware3 min
- Clocks and timers3 min
- Interrupts3 min
- The on-chip comms peripherals3 min
- Power modes and sleep3 min
- Reading the ESP32 pinout4 min