Control Single Chip Temperature Data Logger

A data logger is a device that records measurements over time. The measurements could be any physical variable like temperature, pressure, voltage, humidity, etc. This project describes how to build a mini logger that records surrounding temperature values. This is the figure of the circuit;Temperature will be measured with a DS1820 temperature...

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Control LCD Module Control Using PC

Here’s a design circuit for simple circuit controls a popular 2-line x 16-character LCD by a PC via printer port. It doesn't use the Bi-directional feature found on newer printer ports, thus it should work with most, if not all Parallel Ports. These LCD Modules are very common these days, and are quite simple to work with, as all the logic...

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Control Electronic MIDI Drum

Here’s a design circuit for a MIDI interface between drum pads and computer or hardware sequencer. Using this circuit you can hit pads with drumsticks and store the MIDI data in real time. This is the figure of the circuit; This circuit is based around the PIC16C84 microcontroller which scans the inputs on RB0 to RB7 and when a high...

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Control Digital Light Sensor to Microcontroller Circuit

This is a design circuit for digital light sensor circuit using microcontroller. The ISL29001 is an integrated ambient light sensor with ADC and I2C interface. With a spectral sensitivity curve matched to that of the human eye, the ISL29001 provides 15-bit effective resolution while rejecting 50Hz and 60Hz flicker caused by artificial light...

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Control Analog - Digital With Matlab

For a better understanding of how to specify device settings when using both analog and digital signals, this section uses the I/O board DAS-1601 from Keithley-Metrabyte as an example. The following is a specification summary of the DAS-1601 board: Analog input (A/D) -- 16 single-ended or 8 differential analog inputs (12-bit), polarity is switch configured as either unipolar (0 to 10 volts) or bipolar(+/- 10 volts). Gain...

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Control IR232 Infrared to RS-232 Converter

The Industrologic IR232 is an infrared to RS-232 converter that is based on the 12 bit Sony SIRCS protocol. In addition to being able to send and receive control codes to and from the infrared and RS-232 ports, it can also be configured to send specific character strings to the serial port when selected infrared codes are received. This will...

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Control Led Matrix Circuit With AT90S2313 Microcontroller

LED ball physically assembled in a matrix of dimension 20 Rays and 7 LEDs. LEDs are governed microcontroller and two decoder K155ID10. Operating current 80mA decoders, this is enough to connect the LED matrix in the dynamics of directly between the microcontroller and decoders, excluding transistors, the brightness of LEDs is sufficient....

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Control Infrared and Ultrasonic Scanner Using ATMega

This is a project that is a short range, infrared and ultrasonic scanner that uses a standard hobby servo to move the sensors and a color LCD screen to display the information from the distance sensors. The information displayed on the LCD is an overhead view of the scanning area, with increments of distance from the distance sensors. This...

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Control Counter Wall 7 Segment Circuit

This is a design circuit that is simple counter can be used to count pulses, as the basis for a customer counter (like you see at the doors of some stores), or for anything else that may be counted. The circuit accepts any TTL compatible logic signal, and can be expanded easily. This is the figure of the circuit; All pulses to be counted...

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Control Compass Sensor Circuit Using Microcontroller Project

This circuit is design circuit to build a digital compass that displays both the direction and cardinal points on a television. Other functionalities were added to complement the sensor interface, such as, temperature display, magnetic declination input and disability option. This is the figure of the circuit;The HMC1052 two-axis magnetic...

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Control More about 555-logic for the 555 contest entry

Last week I wrote my 555 contest entry on 555-logic (and its 2-bit grey-code counter implementation as proof of concept) on this blog in a huge rush. As my wife was waiting for me to accompany her for some business, I had to finish up the 555 contest entry report which was due only a few hours before deadline (due to geographical location...

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Control Simple Switch On Time Delay Circuit

This Switch On Time Delaycircuit has been designed to create a lamp switch operatedelectronically with an option of setting a delay in the time ofexecution of operation to reduce one or more lamps in a stairwell orany other places where this circuit may be useful. The circuit can beuseful to control various lamp or appliances that can be...

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Control 555-logic: designing digital circuits with 555s only!

The basic idea of 555-logic is to implement digital logic circuits with 555 ICs only. This gives advantage that a relatively higher and wide range of power supply voltage can be used, limited by the specification of the 555 IC (4.5V - 16V). According to Shannon through his famous 1937 Masters thesis at MIT, any combinational logic circuits...

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Control ladder diagram forward reverse 3 phasa induction motor circuit

This is the Power diagram off Motor forward reverse ,to change the motor direction we must change the one polarty for example R to S, for detail please see below:for the control system, please see the diagram below: for the Ladder diagram in PLC , first make the I/O addressing:1.Push button Forward x0002.push button reverse x0013.push button...

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