Got a free treadmill. Here`s the diagram that came with it. Sorry about the size. I have a question about a board that is up in the console. It has four readouts, time, speed, distance and calories. Don`t need those. It also has a membrane panel with four....

General use camera backlighting base band circuit : the circuit of table of contents, Calyso, iota, matrix, keypad key, memory, IC image, Lcd connector, Lcd backlight driver, Locatest point, hole, Speaker4, camera connector, motor, Midi / MP3 ICS, charging....

Open Loop Speed Control of a DC Motor via 8255 Digital I/O Controller chip using TCP/IP Server-Client Application Programmed in Visual Basic. The 8bit DAC0832 chip is used as the Digital to Analog Converter. In this project open loop control of a DC motor....

Stepper motor control circuit Stepper motor control circuit diagram using TLE5206 for remote control car....

After doing a little research I found out that I can change voltage by either using a voltage regulator chip or resistors. I have a couple different scenarios in which I`ll have to drop the voltage for my motors and I was wondering which method to use for....

This is simple intercom circuit. Here I have used common Ic LM380. Now the switch is in the talk position for the speaker on the left, And the other persons position is listening position. If other one wants to speak The switch must be change to another....

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For one of my classes each student had to pick one of three technology platforms to design, simulate, prototype and then build (PCB layout, ordering, etc) all within ten weeks.  The platforms were: H-bridge Motor Controller, Infrared Proximity Sensor and....

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The simple motor optical encoder circuit is not terribly difficult however it will take some double checking to make sure you have everything hooked up properly before working the first time. The main devices used in the circuit are the 7805, 18F4520 and....

The CM-CU21 is a high quality, portable Commentator Unit. Its sturdy construction and flexibility of features make it suitable for use in a wide variety of environments. It provides two fully featured commentator positions and a third guest position that can....

The wide diversity of automotive motor-drivers, including those used for HVAC (heating, ventilation, and air conditioning), headlamp, seat positioning, window, and mirror applications, requires circuits that do more than just switch the motor on and off. The....

This is example project in which the 8051 is Producing PWM outputs for seperate two channels, The PWM can be used to control the phase angle of SCR or triace for power control of any AC load like Heater Motor Fan, this project can be used as heater power....

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A relatively High power H-bridge motor controller (which is the most common way to control DC motors) With cheap TIP transistors. 5 Amperes of continuous current through an H-bridge module may not seen high power  to someof you, depending on your field and....

A low cost device to temporarily disable the reception of the civilian coarse acquisition (C/A) code used for the standard positioning service (SPS) on the Global Positioning System (GPS/NAVSTAR) L1 frequency of 1575. 42 MHz. This is accomplished by....

M1 is a stepper taken from an old disk drive. There are five pins, i. e. , common, coil 1, 2, 3 and 4. Resistance measured between common pin and each coil is about 75 Ohms. Driving current for each coil is then needed about 60mA at +5V supply. A Darlington....

Unit is driving 80V/10A motor. I currently use the following matching rigg, but since MOSFETs isn`t my domain I`m abit uncertain of the validity of the matching in accordance with the application...

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Hi Everyone out there! I am new to microcontrollers. I am using AT89C55WD to control H-Bridge (L298) which in turn drives the DC motor. Circuits for....

This handy circuit can be used as a speed controller for a 12V motor rated up to 5A (continuous) or as a dimmer for a 12V halogen or standard incandescent....

The schematic herein appears a 5A H-Bridge Module for the working of one Bipolar DC motor. H-Bridge Module consists of one set header (J2) and one set connector terminal (J1). And here are the J2 pinout description of H-Bridge module interface:...

A servo controller for controlling a servo motor from the serial port using a PIC Microcontroller. Project includes source code description and schematics....

A circuit for car windshield/wiper motor speed control built using NE 555 IC.This enables intermittent windshield wiper control which changes sweep rate to 10 seconds....

Here are two simple 12V DC motor speed controllers that can be built for just a few dollars. They exploit the fact that the rotational speed of a DC motor is directly proportional to the mean value of its supply voltage. The first circuit shows how variable....

Designing the circuit for the DC motor and bluetooth system. The bluetooth remote control is used to open and close the curtain. Below is the block diagram for your reference. 2. You can make use of your mobile phone, write a J2ME application for....

The technology of range finding employs extensively in civil, industrial fields such as measuring, medical flaw detection, car anticollision of position of the material, etc. , because the ultrasonic speed wants to the velocity of light it is much smaller,....

The wiring schematic played a big roll on the robot. This diagram is used to graphically display all the wiring of the motor controlling micro-components that gave the robot the ability to physically move forward, backward, left, right, and stop. (This....

This circuit features an intermittent siren output and automatic reset. It can be operated manually using a key-switch or a hidden switch; but it can also be wired to set itself automatically when you turn-off the ignition. By adding external relays you can....

The circuit claimed has a high movement sensitivity. Even air moving (hot air rising, wind blowing) will trigger it when the trimpot is set near the most sensitive position. The transmitter sends out a steady ultrasonic tone at 40kHz. At this frequency the....