Courses

What are current, voltage and resistance? Learn to solve circuits with Ohm's and Kirchhoff's laws and to work safely.

10 lessons · 146 min

Resistors, capacitors, inductors, diodes, LEDs and transistors: how they work and how to choose them.

8 lessons · 123 min

Measuring voltage, current, resistance and continuity. The most common measurement mistakes.

4 lessons · 54 min

Build error-free circuits on a breadboard, troubleshoot them, solder properly and make your first permanent circuit on perfboard.

9 lessons · 151 min

Learn to test every part correctly with a multimeter: resistors, capacitors, diodes, LEDs, transistors, MOSFETs, inductors, relays, fuses and ICs, in and out of circuit.

10 lessons · 146 min

Driving relays, motors and LED strips with BJTs, Darlingtons and MOSFETs; reading datasheets, thermal calculations and choosing the right part.

9 lessons · 147 min

Every block of a power supply from transformer to regulator: rectification, filtering, 7805, LM317, buck/boost converters and protection. Finish by building your own adjustable bench supply.

9 lessons · 148 min

Get to know the operational amplifier as a part: pins, supply, ideal vs. real op-amps, datasheet figures, using it as a comparator and testing a faulty op-amp.

8 lessons · 131 min

Systematic fault finding on a broken board: reading schematics, tracing with measurements, part tests, power supply faults and board repair.

8 lessons · 133 min

Look inside an LED TV: power board, main board, T-con and LED driver. Which symptom comes from which board, and what to measure where?

8 lessons · 130 min

The electronics of desktops and laptops: ATX power supply, motherboard power rails, VRM, power-on sequence, RAM, graphics card and laptop charging circuit.

9 lessons · 142 min

Write code with an Arduino simulator that runs in your browser: LEDs, buttons, sensors, PWM, servos and the serial monitor. Finish by building your own traffic light.

10 lessons · 178 min

From schematic to manufacturing with free KiCad: footprints, placement, trace width, ground pours, DRC and Gerbers. Finish by designing a real PCB for the flasher circuit.

9 lessons · 178 min

Three ways to talk to sensors, displays and modules: UART, I2C and SPI with bit-by-bit simulators; debugging with a logic analyzer and an I2C weather station project.

9 lessons · 160 min

From gates to counters: Boolean algebra, combinational circuits, flip-flops, counters and logic families. The foundation for understanding what's inside a microcontroller.

8 lessons · 144 min

Every op-amp circuit, one at a time: non-inverting and inverting amplifiers, buffer, summing, difference, instrumentation, integrator/differentiator, active filters, Schmitt trigger, oscillators and precision rectifier.

13 lessons · 218 min

Go beneath the Arduino libraries: registers, timers, interrupts, the ADC and low-power modes. Then move on to ESP32 and STM32.

8 lessons · 152 min

Switching at high current and voltage: driving MOSFETs and IGBTs, H-bridges, motor drivers, thyristors and triacs, inverter basics.

8 lessons · 152 min

From using a ready-made module to designing your own converter: buck and boost calculations, choosing inductors and capacitors, flyback, the control loop, PCB layout and EMI.

8 lessons · 159 min