note

Ledチカチカの次で、めちゃめちゃ簡単な電子回路を教えてください

難易度を少し上げた電子回路として、「LDR（光抵抗）を使用した光センサー回路」を提案します。この回路は、光の強さに応じてLEDの点灯状態を変化させることができます。明るいとLEDが消灯し、暗いと点灯します。このプロジェクトは少し複雑ですが ...
EDN

Datasheets.com: Experimenting with the 2N2222 and BC549 transistors

The 2N2222 and BC549 transistors are two old components that are still universally used in the vast majority of electrical circuits today. Their applications include amplifiers, filters, impedance ...
GitHub

ragej4x/arduino-monitoring-sys

Pump + is powered from 3.3V pin of the Arduino. Pump − is controlled via the 2n2222 transistor, which is connected to Arduino pin 13,12,8,7,4. Arduino Pin 2 controls the transistor's base to switch ...