Marco Reps

Marco Reps makes videos about precision electronics, test equipment and the machines in his own workshop. His channel is known for very detailed builds and comparisons.

The videos cover building and testing high-accuracy measuring instruments, repairing professional multimeters, designing and upgrading a CNC milling machine, and trying out laser cutters and 3D printers. Wireless technology and particle physics labs also appear. The style is understated, with dry humour and lots of real measurements on screen. Some of the content is quite advanced, but the builds are easy to follow visually, even for beginners.

Some highlights include:

He builds and tests an open source voltmeter designed at CERN, capable of measuring voltage to eight and a half digits.

A look at ball screws, the parts that turn rotation into precise straight-line motion in machines, and how accurate they really are.

The final stage of a home CNC machine build, fitting and testing a spindle with an automatic tool changer.

The channel has around 224,000 subscribers.

Marco Reps is a good way into electronic engineering, instrumentation and mechatronics. It shows how engineers check that a measurement is accurate and why that matters in everything from research labs to factories. The CNC and machine-building videos connect electronics with mechanical design, which is exactly the mix found in robotics and manufacturing careers.