ガイガーカウンターキットを買ったぞ！Raspberry Pi picoに繋いで計測結果をLCDに出力だ！ → あれ？ガイガーカウンターから飛んできた負パルスの立ち下がりエッジをRaspberry Pi picoが検出してくれない！ → ガイガーカウンターが出してる負パルス、なんか波形 ...

The bipolar NE555 timer IC is widely used in inductorless dc-dc converters, most frequently in doubling and inverting converters. However, another very popular IC, the LM386 audio amplifier, may be a ...

〜難しそうに見えて実はカンタン。555タイマーで遊ぶ“最初の一歩”〜 この記事で分かること NE555タイマーが何をするICなのか（超ざっくり理解できる） LEDを1個チカチカさせる“基本回路”の作り方 LEDを2個“交互点滅”させる方法 ブレッド ...

最終回となる今回は、NE555タイマーICにデュアルのD型フリップフロップ74HC74を用いて、信号を分周し、さらにLED駆動用のパワートランジスタを付けたので、実際にD型フリップフロップ動作の波形とLEDの点滅をテクトロニクスのオシロスコープ「TBS1022」を用い ...

Microcontroller systems running 24 hours a day, 365 days a year, can sometimes (rarely) find themselves in a latch-up state. When this happens nothing works and even a reset may not be enough. In this ...

This circuit is based on a passive infrared (PIR) sensor, which automatically switches on a device when someone comes close to it. It can be used for detection of theft or an unauthorised person ...

Not exactly a drop-in replacement for the good old NE555, but usefull for many timing jobs where a delay of seconds until hours is needed. Original designed for a coffee-machine containing 3 NE555 ...

Basic application of NE555 Timer operating in Astable Mode, where it is essentially functioning as a simple oscillator. Here the 100 micro farad capacitor is being briefly charged up and then ...

Capacitive sensors are widely used to measure various physical and chemical process parameters such as displacement, acceleration, thickness, force, pressure, stress, level and humidity. The measured ...