Gear & Reviews

Most beginners buy the wrong soldering iron, and it’s why their joints fail. Here’s what adjustable temperature and wattage actually do, which tip to use, and three irons worth your money.

Most beginners buy the cheapest 2WD acrylic car and regret it by week three. Here is how 2WD, 4WD, and tracked metal chassis actually differ — and which one to buy first.

Jumper wires are the cheapest part of any build and the one most likely to waste an afternoon. Here is what separates a set that lasts from a bag of intermittent junk, plus the three kits I keep buying.

Breadboard, perfboard, and fabricated PCB are not competing options — they are three stages of the same circuit’s life. Here is how to tell which stage yours is in, and what each one actually costs you.

Most ESP32 listings hide the thing that matters most: which chip is under the metal can and which pins are actually safe to use. Here is how the WROOM-32, S3, and C3 SuperMini really differ, and which one earns a spot on your desk.

Ultrasonic sensors ignore color but go deaf against soft and angled surfaces. Infrared handles fabric fine but collapses in sunlight and against black objects. Here is which one belongs on your robot, and why the good builds use both.

The Arduino Uno R4 finally drops the decade-old ATmega328p for a 32-bit ARM chip, a real DAC, and USB-C. We break down what’s genuinely different from the R3 and who should actually bother upgrading.

We ran distance tests on the HC-SR04 ultrasonic sensor to see how accurate it really is, and where it starts to fall apart.

The LAFVIN Basic Starter Kit promises a lot for $15. We unboxed it and tested the components to see what actually holds up — and what it doesn’t include.

We compared three price tiers of Arduino starter kits to find out which ones are actually worth buying, and which are just the same forty parts in different boxes.