Tag
Electronics tutorials
7 tutorials tagged Electronics.
Beginner · 25 min
Bump Sensors and Debouncing for Robot Collisions
One press, nine transitions — and the interrupt counts every one of them.
Read tutorial →Beginner · 30 min
Reading Analog Voltages: ADC References and Dividers
analogRead gives you a ratio, not a volt. Get the reference right and the divider follows.
Read tutorial →Beginner · 30 min
How the I2C Bus Works: Addresses and Pull-Up Resistors
Every sensor page says connect SDA and SCL. This is what those two wires are really doing.
Read tutorial →Beginner · 30 min
Why Your Robot Resets When the Motors Start
The reset that looks like a code bug is almost always the battery. Budget the current, then measure the sag.
Read tutorial →Beginner · 30 min
8051 Architecture: Pins, Memory Map, and Registers
Harvard core, four ports, 256 bytes of RAM, and timing you can count in machine cycles.
Read tutorial →Beginner · 28 min
8051 GPIO and Port Interfacing: Sink, Don't Source
Why 8051 LEDs are wired backwards, why you write 1 before reading, and what a port can drive.
Read tutorial →Beginner · 18 min read
Control DC Motors with PWM and an H-Bridge
Wire and control a brushed DC motor safely using PWM, an H-bridge, and realistic current limits.
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