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Tool Guides & Helpful Articles

Step-by-step guides for the tools on HAPPY Tools, from mic tests and password generation to QR codes, along with the background knowledge you need to get the most out of them.

How-to Guide14 min read

How to Do a Traffic Count: Vehicle Classes, 15-Minute Tally Sheets, and Heavy Vehicle Percentage

“How many vehicles use this road per hour?” “When is the morning peak?” “How many trucks are in the mix?” Traffic counts are used for road planning, choosing store locations, student research projects, and neighborhood school-route safety work. But when you try one yourself, it is easy to get stuck on how to classify vehicles, where to count, how to build a 15-minute table, and how to calculate the peak hour and heavy vehicle percentage. This guide walks through preparation, counting on the day, building the tally sheet, calculating the peak hour, heavy vehicle percentage, and passenger car equivalents, running a pedestrian count, and recording on a phone tally counter and exporting to CSV, all with worked numbers.

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How-to Guide10 min read

How to Find the BPM of a Song: Tap Tempo Tips and Telling Double-Time from Half-Time

Transcribing by ear, practicing a dance, mixing as a DJ, cutting a video to the beat, setting a delay: all of these start with knowing the song’s tempo (BPM). But when you tap along a few times, the number changes every time, or the result comes out as double or half the real value. This guide covers what BPM means, how to keep tap-tempo error small, how to count with a clock, how to check with a DAW or app, how to tell double-time from half-time, and typical BPM ranges by genre and by tempo marking.

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How-to Guide10 min read

How to Test for Stick Drift: Check PS5, Switch, and Xbox Controllers with Numbers

Your character slowly starts walking on its own, or the camera keeps turning. When that happens, stick drift is the first suspect. But just by watching, it is hard to tell whether you are imagining it, whether it is a game setting, or whether the controller is actually faulty. This guide shows how to read your stick values in a browser and confirm drift with numbers, what the 0.05, 0.10, and 0.20 thresholds mean, how to read the drift direction and jitter, what to do if the controller is not detected, and how to use your results when asking for a repair.

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How It Works9 min read

How Long Does Caffeine Stay in Your System? Half-Life Math and When It Drops by Half

Will the coffee you had in the late afternoon be gone by bedtime? Caffeine peaks in your body about an hour after you drink it, and then drops by half every “half-life.” This guide uses concrete numbers to explain how caffeine moves through your body, how to calculate what remains using the half-life, how long each drink takes to fall to a target level, and how several cups stack up into the night.

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How-to Guide7 min read

How to Check for Dead Pixels: Telling Stuck and Dead Pixels Apart

When you unbox a new monitor or phone, even a single tiny dot on the screen is hard to ignore. But how easily you spot a dead pixel depends heavily on which color you look at, and dust or room lighting can fool you. This guide explains the types of pixel defects, how to check thoroughly with full-screen solid colors, how to tell a dead pixel from dust or scratches, and what to tell the retailer or manufacturer if you find one.

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