Found in Apple AirTags, the CR2032 button cell battery, also known as a coin battery, is actually surprisingly easy to test ...

Digital multimeters (DMM), once called voltmeters, have been described as the tape measure for engineers in the new millennium. With electronics and electrical circuits included in almost every ...

In this video I test whether or not pure de-ionized water will ruin electronics. Pure water does not conduct electricity so it shouldn't ruin a device if the water is absolutely pure. I bought some ...

Engineering consultant Frank Hertel outlines a method of measuring an inductor’s value using only an oscilloscope and a signal or function generator.

Power meters have become ubiquitous for professional, elite, and even recreational cyclists. What should we understand about their accuracy.

Blood glucose monitoring helps you see how food, exercise, stress, and medications affect your levels. Tracking results over time can help you and your doctor adjust your diabetes plan. Most people ...

Try shopping for a USB-C cable and you’ll no doubt be struck by the confusing disparities in cable pricing and performance claims. These are just cables, right? Can they really be that different? At ...

Car key batteries typically last 2-5 years, but they can drain prematurely due to temperature. Use a voltmeter to check the voltage accurately to avoid situations where the car suddenly stops ...

The final (equilibrium) of acidic and acidified foods must be 4.60 or less. Calibrate your pH meter before testing foods. Prepare and test 2 to 3 samples to ensure an accurate pH value. Using a pH ...

You can test ketone levels at home using a urine dipstick or a blood ketone meter. If you have diabetes, check for ketones when your blood sugar is high or when you're sick. Talk with your healthcare ...