The multimeter, the oscilloscope, the logic probe and analyzer, Serial done right, and a method that finds any fault. Ends with a boss: three bugs in one circuit.
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6 lessons in 3 chapters, about 2 hours on a simulated Arduino Uno R3. Free, in your browser, every step checked by the simulator.
Three meters on a circuit with no supply at all: one reading a resistor, one beeping across a switch, one testing an LED. Why these checks need the power off, and what each one tells you.
Open it in the simulatorA logic probe says high, low or nothing; a logic analyzer records the ones and zeros and decodes them into bytes. Find a floating pin, fix it with a pull-up, and read serial straight off the wire.
Open it in the simulatorA button and an LED that do nothing, with three faults planted at once. Use the method engineers use (reproduce, isolate, measure, fix) and a meter to find all three.
Open it in the simulatorEach lesson opens when the one before it is done, and each chapter ends in a project.
Volts across, amps in line, and the checks you make with the power off.
Two meters on one LED circuit: a voltmeter across the LED and an ammeter in the loop. Why one goes across and the other goes in line, and how to check Ohm's law against real readings.
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Three meters on a circuit with no supply at all: one reading a resistor, one beeping across a switch, one testing an LED. Why these checks need the power off, and what each one tells you.
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A scope for shapes and edges, a probe and an analyzer for ones and zeros.
A meter gives you one number; an oscilloscope gives you the shape. Measure a PWM pin's frequency and duty, watch an RC slow its edges down, and catch a button bouncing a dozen times in one press.
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A logic probe says high, low or nothing; a logic analyzer records the ones and zeros and decodes them into bytes. Find a floating pin, fix it with a pull-up, and read serial straight off the wire.
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Print debugging done well, then reproduce, isolate, measure and fix on a real fault.
Print debugging done well: labeled and timestamped lines, a warning word you can search for, and a verbose switch you flip from the Serial Monitor without rebuilding.
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A button and an LED that do nothing, with three faults planted at once. Use the method engineers use (reproduce, isolate, measure, fix) and a meter to find all three.
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All 6 lessons, in order, each with what it covers. Any of them opens in the editor right away.
Debug like an engineer is part of the embedded track, a ladder of courses from zero to expert.
Take the Arduino wrapper off: DDR, PORT and PIN, Timer 1 by hand, the vector table and interrupts, cycle-counted delays in a .S file, a bug read off a halt in the debugger, and a UART drawn by hand on a pin.
Open the next courseArduino, ESP32, Raspberry Pi Pico and STM32: pins, timing, buses, motors, WiFi, registers and debugging, every lesson checked on a simulated board.
See every course on the trackEvery lesson runs in the simulator with nothing to buy. When you want the real thing, these kits have the parts.
Pick the starter kit you own and run every lesson in its manual with the same parts on the same pins.
See every kitYes. All 6 lessons of Debug like an engineer are free and run in your browser, with nothing to install and no parts to buy before you start.
No. Every lesson runs on a simulated Arduino Uno R3 with its parts on the canvas, and the simulator checks each step as you go. When you want to build it for real, the same wiring and code work on a real board.
About 2 hours: 6 lessons in 3 chapters, each one a few short steps. Your progress is kept, so you can stop after any lesson and pick up where you left off.
Each chapter ends in a project that puts it together: The power-off checks: ohms, continuity and diodes, Logic probe and logic analyzer and Boss: one circuit, three bugs.
With "The multimeter: volts across, amps through", and each lesson builds on the one before it. New to circuits? Electronics basics is the course that starts from zero.