small dc motor control using pwm circuit

A simple and efficient PWM lamp dimmer utilizing the timer IC NE555 is presented in this article. Traditional linear regulator-based dimmers achieve a maximum efficiency of only 50%, which is significantly lower than PWM-based dimmers that can exceed 90% efficiency....

Arduino and ATMega8

A programming jig has been constructed to eliminate the need for maintaining the circuit on a breadboard. Additional details and photographs are available on the Learning About the AVR Parallel Programmer page. The programming jig serves as a dedicated platform for...

Servocore 2-motor walker circuit

There is an advantage in using continuously active PWM signals. The main reason is that the asynchronous frequencies of the PWM core and microcore can sometimes result in a shortened PWM pulse. The servo recognizes this as a command for...

Arduino Eye Shield

The Arduino Eye Shield is a circuit board that can be plugged on top of the Arduino, enabling it to interpret analog video (PAL or NTSC) from a camera or other source. This provides the Arduino with visual capabilities, allowing...

arduino How to make a clean amplified microphone analog to digital conversion

An electret microphone has been connected to an operational amplifier (op-amp), with the output directed to an Arduino microcontroller. The analog-to-digital converter (ADC) on the microcontroller converts a voltage range of 0 to 5 volts into a 10-bit number, ranging...

pwm Why is the MOSFET driver in this circuit dying

The circuit receives an input voltage (Vin), which is processed through a Switch Mode Power Supply (SMPS) utilizing two MOSFETs driven by an IR2104 driver. The output is directed to the battery positive terminal (Bat+). An LM321 operates as a...

simple 200 watt amplifier

The PWM-controlled modified sine wave inverter circuit presented here utilizes a single 4093 integrated circuit (IC) for its specified functions. This IC consists of four NAND gates, with two configured as oscillators and the other two serving as buffers. The...

H-Bridge

H-Bridge This circuit drives small DC motors up to about 100 watts or 5 amps or 40 volts, whichever comes first. Using bigger parts could make it more powerful. Using a real H-bridge IC makes sense for this size of motor,...

project crystal

This is the initial phase of an Arduino-controlled PWM RGB LED project, which incorporates distance and PIR sensor control along with a sleep mode feature. The project utilizes an Arduino microcontroller to manage a Pulse Width Modulation (PWM) RGB LED, allowing...