electronic millipede robot circuit

An Arduino is used to measure the rotational speed of a basic computer fan. This project was part of a series of YouTube videos created during a Master's program in Computer Science, specifically focusing on an embedded systems programming course...

Blinker Indicator

When the lamp turns off, a reset pulse is generated for the corresponding counter by NAND gate IC1. The counter then counts up again. The display's progression rate can be adjusted to the desired speed using potentiometer P1. Only one...

Led or Lamp Flasher Circuit

Ideal for operating 3 to 24V DC existing on-circuit lamps. This circuit was designed to provide continuous light for lamps already wired into a circuit. The circuit is intended to facilitate the operation of existing DC lamps that are integrated into...

LED current limiter accepts ac or dc

When an application does not require PWM (pulse-width-modulated) dimming or controlled frequency operation, the primary concern may be preventing excessive current that could damage or destroy LEDs. A simple LED current limiter can be created using a common low-dropout linear...

Knightrider lights for model cars

This circuit operates six LEDs in a "Knightrider scanner mode." The power consumption is primarily influenced by the type of LEDs utilized, especially when employing a 7555 (CMOS version of the 555 timer). Caution is advised when working with electricity,...

10 led VU Meter using LM3915

The circuit diagram illustrates a straightforward circuit design featuring 10 LEDs. It employs a series of half-wave rectification using the precision IC2 TL071, along with a single LM3915 IC that regulates the LEDs, functioning as a VU meter indicator. The...

Brushless DC motor with Arduino

Constructing a stroboscope (zoetrope) using an Arduino and the spindle motor from a damaged Xbox 360 DVD drive. Includes zoetrope animations, Arduino code, and circuit schematic. The project involves utilizing an Arduino microcontroller to control the spindle motor extracted from a...

LED Flasher Using Transistor

This simple LED flasher circuit will alternately turn ON and OFF two LEDs. The first LED will illuminate when the second LED is OFF for a certain duration, and then the process will repeat. The LED flasher circuit operates using a...

flashing lights

The flashing LED light circuit, known as an astable multivibrator, is illustrated in the accompanying circuit diagram. This circuit comprises two transistors (TR1 and TR2), two electrolytic capacitors (C1 and C2), two LEDs (L1 and L2), and four resistors (R1...