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Portable Solar Panel (200W Foldable)

EcoFlow 200W bifacial portable solar panel. Folds flat for transport. Compatible with most power stations. Perfect for camping, van life, or emergency backup. Includes carrying case.

Phone Screen Repair Service

Cracked screen? I fix iPhones, Samsungs, Pixels, and most Android phones. You buy the screen (I'll tell you which one), I do the labor. 30 minutes to 1 hour.

Electronics & Boolean Logic Workshop

I'll teach you what I proved in my master's thesis: switches are logic. AND, OR, NOT. Wire them together and you can compute anything. We build circuits on a breadboard. By the end, you'll have a working binary adder made of transistors. From there, it's just scale.

Enigma Machine Replica (3-Rotor, Functional)

Working replica of the Wehrmacht 3-rotor Enigma. 159 quintillion possible settings. Type a letter, the rotors turn, the lampboard lights up the encrypted letter. I broke it with logic, not brute force. Try to crack a message yourself -- I'll give you hints.

3D Printer (Creality Ender 3 V3)

Print anything you can model. PLA, PETG, TPU. 220x220x250mm build volume. I'll help you set up your first print. Bring your own filament or buy mine.

Nanosecond Wire (11.8 inches) -- Teaching Aid

A piece of wire exactly 11.8 inches long. The distance light travels in one billionth of a second. I hand these out at lectures. Hold it. Feel how short a nanosecond is. Now multiply by a billion. That's one second. Never waste a nanosecond.

Debugging Masterclass -- Systematic Fault Isolation

I'll teach you to debug anything -- hardware, software, processes, organizations. The method is the same: isolate, measure, hypothesize, test. Stop guessing. Start measuring. And tape the bug into the logbook when you find it.

Multimeter (Fluke 87V Industrial)

The same model I'd use if I were debugging hardware today. Measures voltage, current, resistance, capacitance, frequency, temperature. If you can measure it, you can fix it. If you can't measure it, you're guessing.

Drain Camera Inspection Kit

30m drain inspection camera with 7-inch LCD screen, LED lights, video recording. See inside pipes before you start digging. Saves you from guessing where the blockage is.