Street Light Dimmers
#street light
#dimmer
#LED
#light control
#energy saving
#automated lighting
#outdoor lighting
#PWM
#light sensor
#circuit design
No description available.
10 Dancing LEDs
The basic circuit illuminates up to ten LEDs in sequence, following the rhythm of music or speech picked up by a small microphone. The expanded version can drive up to ten strips, formed by up to five LEDs each, at...
DC motor PWM speed control
The 555 IC is wired as an astable and the frequency is constant and independent of the duty cycle, as the total resistance (R charge + R discharge, notice the diode) is constant and equal to 22Kohm (giving a frequency...
light dark sensor with relay circuit
The schematic diagram has been modified to include a 220µF smoothing capacitor connected between the base of transistor Q1 and ground. This addition effectively mitigated the issue of relay chatter, which involved rapid on/off switching at light levels. The incorporation...
6-Channel Running Light
The circuit of the running light consists of two integrated circuits (ICs), a resistor, a capacitor, and seven light-emitting diodes (LEDs), along with a decade scaler IC.
The running light circuit is designed to create a sequential lighting effect using seven...
LED VU Meter with LM3914N
The circuit is based on an LM3914N bar graph display driver device (IC1), which can be used to drive up to ten LEDs. This is connected so that with OV12 at the input only the first LED indicator switches on....
Motor speed controller with timer 555
Pulse width modulation (PWM) is a technique to control analog circuits with a digital output. PWM is used in many applications, especially to control light intensity and speed on motors. A PWM circuit makes a square wave with a variable...
brain wave machine
A simple design for brain-wave goggles can be created using appropriate eyewear, such as safety glasses, along with an array of Light Emitting Diodes (LEDs). The control of the LED flash rate is managed through the PC's parallel port. Audio...
Automobile White LED Light
Without a dedicated buck converter or white LED driver IC, it is possible to safely drive multiple standard high-efficiency white LED modules using available battery power.
To design a circuit capable of driving high-efficiency white LED modules without a dedicated buck...
Automotive LED Timing Light
A timing strobe can be constructed using high-brightness LEDs and a few common components. Ignition pulses from the number one cylinder high-tension lead are used to trigger the circuit via a homemade inductive pickup. Transistors Q1 and Q2 buffer and...