Labs

3 labs so far. Each one shows how it is assembled and how it works, and comes with its model note and sources.

Isometric drawing of an orange multimeter measuring a 9 V battery and reading 9.42 V, next to a wall outlet, a breadboard and a coffee cup.

Lab 02

Multimeter: its 10 functions

The multimeter's 10 functions, each with something you have on your desk: a battery, the wall outlet, an LED or an Arduino's PWM.

Isometric drawing of a two-wheeled robot with an Arduino UNO, L298N H-bridge, HC-SR04 sensor and two 18650 batteries, with its indigo shadow on the paper.

Lab 01

Sonar: a robot that listens to walls

An obstacle-avoiding robot that builds itself, 32 parts from code. The HC-SR04 sends out 8 pulses at 40 kHz and the Arduino turns the echo into centimeters.

Isometric drawing of a blue Arduino UNO connected with two wires to a breadboard with a red LED and a 220 Ω resistor.

Lab 00

Blink: your first program

Your first Arduino program, seen from the inside: pin 13 switches between 5 V and 0 V, and that turns the LED on and off.