🕹️ Practice arcade
Extra games, not extra homework — timed sprints, survival runs that end when your lives run out, and mastery drills built from the same skills Embedded Systems and the Internet of Things teaches.
⚡ Sprints
Beat the clock.
🔢 Bits and Units Sprint
Binary to hex, which bits are set, milli to base units, and capacitor codes. Ninety seconds.
⚡ Circuit Math Sprint
Ohm's law, resistor heat, parallel pairs, dividers and colour bands. Two minutes.
⏱️ Timing Sprint
Elapsed time across the millis() wrap and hardware-timer counts from a prescaler. Ninety seconds.
💀 Survival
Each miss costs a life — lose them all and the run ends.
🔧 Part Sizing Survival
Pick the LED resistor, the transistor's base resistor, and how long an RC takes to settle. Three misses and you're out.
🎛️ Register Bits Survival
Set, clear and toggle one bit, then rewrite a whole field without disturbing its neighbours. Three misses and you're out.
🔌 Bus Survival
UART frame times and byte rates, and the I²C address Wire actually wants. Three misses and you're out.
🔋 Battery Life Survival
Battery life from a duty cycle with derating, and a deep-sleep timer set in the right units. Three misses and you're out.
🎯 Mastery
No clock — just get N in a row.
📶 Logic Levels Mastery
Noise margins from datasheet levels, and a divider that brings 5 V safely down to an ESP32-S3 pin. Five in a row.
🎚️ ADC and PWM Mastery
Volts to ADC codes and back, integer-division traps, PWM averages and duty values. Five in a row.
📏 Sensor Math Mastery
Ultrasonic distance at the real speed of sound, and a two-point calibration applied to a new reading. Five in a row.