Spark

A breadboard and a few parts, with one Uno blink at the start and no processor after it. What current, voltage, time and logic really do.

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One board, twenty pins and a C++ sketch. From a lamp you switch to a game you can play.

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A 32 bit RISC-V board at 160 MHz. Its own peripherals, its own 3.3 V rules, and a console at the end of it.

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A dual core Cortex-M0+ at 125 MHz. PWM on every pin, a 64 bit clock, and pins that do not forgive 5 V.

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A Cortex-M4 at 84 MHz, where a pin is a port and a number and every peripheral starts with its clock switched off.

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The language, one idea per lesson, on a board that shows you what your code did.

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Build logic from individual gates, then make a bit persist, count and move through a register.

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Read people and sensors without blocking, control an output, then finish with two playable builds.

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Start with one NAND gate, package every circuit you build into a chip, and use your chips to build the next one: an adder, memory, a CPU of your own, and a computer that runs your program.

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The classroom course, week by week: a loop on a breadboard through to a board talking over serial.

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