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Last Updated
03/31/2019
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Detailed entries for one subject from the INDEX TO HOW TO DO IT INFORMATION. |
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REMOTE CONTROL sa AUTOMATION sa ELECTRIC LIGHTING CONTROLLER sa ELECTRIC POWER CONTROLLER sa HOUSE AUTOMATION & COMPUTERIZATION sa INFRARED REMOTE CONTROL sa PHOTOELECTRIC DEVICE sa POWERLINE CARRIER REMOTE CONTROL sa RADIO CONTROL sa RELAY sa ROBOTICS sa SERVOMECHANISM sa SONIC SWITCH sa STEPPER MOTOR sa TELEPHONE REMOTE CONTROL sa WINDOW CONTROLLER xx AUTOMATION xx ELECTRONICS xx RELAY xx SWITCH -- ELECTRONIC Tips on interfacing microcomputers to servo mechanisms by means of radio control devices like those used in model airplanes. Controlling the real world. How to use a microcomputer to control electronic devices that are not TTL compatible. Several circuits are illustrated. Tune in and turn on. A computerized wireless AC control system. Used to control TV, stereo, lamps and vacuum cleaner. Part 1. The transmitter. Tune in and turn on. Part 2. Receiver and relays. A classroom demonstration: Controlling a system with a microcomputer. A simple airflow control system illustrates the concept of computer control of a physical system. How to wire several optically isolated solid state relays to a parallel output port of your computer. Use them to control electric devices up to 10 amps (110 volts) by turning them on and off at programmed times. Est. cost: $20 per controller. Add some control to your computer. An output port tutorial. How to control from 1 to 16 external devices by means of a single output port using time multiplexing techniques. Handheld remote control for your computerized home (see also Jan 1980 pg 28). Modifying Milton-Bradleys' Big Trak motorized toy tank so that it can be radio controlled by a microcomputer. Audio delay circuit that originally appeared in Popular Electronics is modified for control by an 8-bit parallel port. Demonstrates how to attach a computer to any circuit that normally uses mechanical switches. Build a touch tone decoder for remote control of various devices via a computer connected to a telephone. AC motor control. Simple algorithms and hardware. Two experiments illustrate how to connect a microcomputer to an external device. A versatile low-cost microprocessor controller module. Suitable for a large number of controller applications. Est. cost: $30. Circuit for driving a small motor or relay from a TTL-level output port. Control your environment with the Atari 400 or 800 computer. Devices to sense the presence of people and control AC-powered devices. Build the power I/O system. Controlling ac/dc power in the real world with your computer. Robotics, control and monitoring with an embedded controller. Using the 8031 eight-bit microcomputer system on a chip and your personal computer as a platform for a wide variety of real-world control applications in robotics, data-acquisitions, and control. CYDAT. A universal data collector/controller. Extremely flexible project lets you add inputs and outputs to just about any microcontroller engine to implement virtually any application. Support up to 80 digital inputs and outputs, 80 channels of eight-bit A/D, control up to 80 relay outputs, sense up to 40 5-to-220-volt AC or DC inputs, and control up to 40 24-to-220-volt AC triac outputs. Accommodates a wide range of microcontroller engines. Est. cost: $300. Part 1. CYDAT. A universal data collector/controller. Part 2. Circuit construction details and theory behind a practical controller card utilizing the Motorola MC68HC805C8 microcontroller. CYDAT. A universal data collector/controller. Part 3. Add a parallel processor arrangement to increase power and flexibility. This upgrade allows you to add modem, nonvolatile memory, real-time clock, speech processor, digital signal processor, math coprocessor, etc. CYDAT. A universal data collector/controller. Part 4. Build a hardware card that interfaces the CYDAT system directly to the bus of a PC using any available eight-bit slot. Cyber Link. An expandable controller network. Accommodates from 1 to 255 remotely located and independently-oriented controllers. Nodes are linked with three-line RS-232 cable and each node as 32 programmable I/O lines. Optically isolated remote control interface uses the presence (or absence) of a spot on your CRT screen to turn on (or off) an output of 5 to 15 volts. Up to 16 outputs can be handled (one at a time). How to interface RS-232 signals from computers to the outside world. Includes an interface for driving reed relays, an opto-coupler, an integrator circuit to drive a load, etc. RS-232 monitor/control system incorporates an addressable asychronous receiver/transmitter IC that is well-suited for remote data collection and control. The complete system is composed of a PC, control software, combination RS-232 interface and power-distribution center, and one or more control nodes connected in parallel over a four-conductor bus. The conductors carry power, ground, and the transmit and receive signals. Est. cost: $50. Wireless controller turns things on and off. Automatic impulse switch does not have control power on continuously. Used to remote control electrical devices. Wireless tape-recording system uses an FM radio, an FM wireless mike, a tape recorder and the control described in this article. Controller turns recorder on when mike is on and off when mike is off. Tip on adding the 50-ohm control-line termination needed by a PC controller card that operates motors, relays, etc. The Experimenter. Build a link between your PC and the outside world. Features 8 inputs capable of voltage measurement, 4 timer/counter inputs, 24 digital input/output lines, 8 high-voltage, high-current outputs, and a power relay. Use it to control motors, solenoids, alarms, etc. Connects to the computer via a serial port. Est. cost: $150 (kit). Part 1. Operating theory and commands. The Experimenter. Part 2. Construction. AGC operated power control turns 120 volts AC on and off with the presence or absence of a signal in the bandpass of a radio receiver. Nomogram chart aids design of remote control circuits to produce timing and triggering spikes. Multiple-function remote-control relay circuits can sense and control high-power circuits. Circuits illustrate how diodes and transistors can be employed for radio receiver channel and band-switching. How computers communicate with the real-world. Includes typical circuit using an opto-isolator to connect a computer to an external load. Let electronic slaves do your bidding. What is available in remote control devices for your home. Remote doorbell signal lamp controller. This lamp controller will turn on any kind of conventional 117-volt AC lamp each time the doorbell is pushed. 3-channel appliance controller is designed for use with the Commodore 64 computer. Positive signals from the output port turn electrical appliances on-or-off. Includes a listing of the control program run by the computer. Computer control of the entire world. Two circuits study the problems involved in trying to interface computers to control a household appliance. Remote control circuits. (1) DC-load controller uses a rotary switch and two-wire cable to control 2 or 3 functions. AC-load verson also shown. (2) 16-function controller operates over a 5-conductor cable. (2) 10-function control requires only a two-wire cable. Remote possibilities. Introduction to operating blinds, ceiling fans, fireplaces and other household conveniences with wireless pushbutton controls. Temperature sensing. How a simple and accurate temperature sensor can be built. How to interface and control it with a computer. Includes software for controlling, calibrating and running the thermometer. Software is for the SWTP 6800 microcomputer, but can be adapted. A review of the construction and use of the PAIA 8700 single-board computer available from PAIA Electronics, Inc. This computer uses the 6503 microprocessor and is intended for use in controller applications, and not as a general purpose computer. Build the output buffer/driver. A six-channel interface that permits computer-controlled, independent, dc-current switching of multiple external devices via a TTL-compatible I/O port. Kilobaud klassroom. Part 19. Build an inexpensive, dedicated control computer. Uses a Motorola 6802 CPU, 2716 EPROM, 6820 peripheral interface adapter, and miscellaneous parts. Estimated cost: $50. The intelligent toaster. Experiments in computer control. Series on experiments in computer control and robots begins. The intelligent toaster. Experiments in computer control. A look at voice input and output systems. The intelligent toaster. Experiments in computer control. Design and construct your own video touch keypad. The intelligent toaster. Experiments in computer control. Continued discussion on designing and constructing touch circuits to input information. The intelligent toaster. Experiments in computer control. Before you build computer-controlled devices, you need to understand single-chip intelligence. EPROMs. The intelligent toaster. Experiments in computer control. Single-chip intelligence. How to program the 8748 EPROM. The intelligent toaster. Experiments in computer control. Single-chip intelligence. Programming and use of the Intel 8748 "computer-on-a-chip". How to construct your own simple and inexpensive output line that doesn't require any electrical connection to the computer itself. Use it to control small electrical appliances. Est. cost: $30. The intelligent toaster. Experiments in computer control. How to construct the "command communicator" portion of the UNIMEM home control system. The intelligent toaster. Experiments in computer control. Subroutines to support the "command communicator". Circuit for controlling an external electric device with a signal from your computer. Octal output circuit (port driver circuit) is suited for medium-power loads (up to 0.5 ampere each). Loads may be lamps, relays, valves, small steppers, etc. Experimenter's interface device. Simple add-on device lets you explore electronic control with your home computer. Designed to connect to the 24-pin user port of a Commodore 64 computer, but can be adapted to other computers. Part 1. Experimenter's interface device. Part 2. Experimenter's interface device. Part 3. Experimenting with input and output lines on a Commodore-64 computer. Projects include a sequential binary counter, alarm clock, power control, and alarm system. How to control AC power with a personal computer. Some ideas and examples. Programmable digital sequencers and controllers. Use them to activate LEDs, motors, solenoids, etc. Part 1. Construction of a 16-step, 4-bit programmable digital sequencer is shown which uses a "punched card" and simple card reader to enter the programs. Programmable digital sequencers and controllers. Part 2. Construction of a 256-step, programmable digital sequencer is shown. Easy computerized control and monitoring. An economical way to monitor sensors and actuate electrically operated devices using a computer, external controller and a BASIC language interpreter. "Multi-Trol" can control almost any device with nearly any signal. Master control SCR switching center so you can control equipment from a remote or local position with automatic or manual go-no-go type switch, photocell or sensor. Control circuit uses ability of diode to rectify AC and to block DC of reverse polarity. Thus a 2-wire control line is used to operate any of three relays. Switching device turns on outside lights when a car pulls into your driveway or when the doorbell is pushed. Est. cost: $25. Low-voltage remote power control can remotely handle switching of 600 watts at 120 volts AC. Selective call receiver monitor turns on the CB audio only when a special signal is received. Using an agreed-upon channel, the caller and receiver have electronic devices to send and receive the special signal. Est. cost: $50. Tips on using the wireless audio system described in the January 1976 issue as the basis for a computer-based remote control system for your house. How to interface microprocessors to external devices. Control your model railroad with audio tape. Signals from a cassette tape serve as a storage system for timed "stop and go" commands. Schematic and construction details for a pulse generator which is used to store control pulse on tape and then to decode it for controlling the train. Make your computer work as a control center. Simple circuits enable small computers to perform a variety of external operations. Circuit connects to the audio output jack of a volunteer fire department monitor and turns on a lamp by means of a relay that is activated when the alarm sounds. Build a remote-control interface for your computer. Use any TV or VCR infrared remote to control a multimedia presentation or a software demo that requires only a reasonable number of commands. The PC parallel-port relay. Circuit consist of eight relays that can switch loads of up to 117-volts AC (at 10 amps each) under the control of almost any computer running MS-DOS or Windows. Est. cost: $50 (kit). House Watcher. Electric control box turns on lights and radio at intervals around the clock to give home a lived-in look. Low-voltage remote control allows operating your hi-fi from any room in the house. Special electrical controller operates up to six 110-volt outlets, each one on a different timing sequence. The varying light patterns of people-at-home can be simulated by installing one of these controlled outlets in every normally used room for use when no one is home. LED bar-graph display. Eight simple electronic gadgets include a position indicator for remote selector. A 555-timer-based signaling and control circuit that can be used in a variety of applications. Computer control board uses eight optoisolator-driven triacs to provide computer control of 8 AC operated devices. Control 117 volt devices up to 2 amps each. Estimated cost: $115. Lower or raise the volume on your TV set, or anything else, by means of remote control. Remote volume attenuator (control) can be operated by either analog or digital means. How to interface several types of popular 8-bit microprocessor IC's to provide TTL inputs and outputs, or to control relays or high voltage devices. Home control computer. Part 1. Build this controller for your home computer to control external appliances or systems. Connects to an RS-232 output port. Can service several external devices. Est. cost: $170. Home control computer. Part 2. Home control computer. Part 3. Interfacing the Timex Sinclair 1000 or ZX81 computer to the real world. Part 1. Interfacing to a clock/calendar IC, a temperature indicator, a light controller, and a heater controller. Interfacing the Timex Sinclair 1000 or ZX81 computer to the real world. Part 2. Some general software principles and a look at machine-language programming. Interfacing the Timex Sinclair 1000 or ZX81 computer to the real world. Part 3. How to measure temperature, create a security system, and control high-power devices. Interfacing the Timex Sinclair 1000 or ZX81 computer to the real world. Part 4. Add speech capabilities and how to free up the computer's port for other uses. A versatile remote controller. Part 1. Adding remote control to any circuit is not as hard as you might think. This article shows how its done using the Motorola MC14457 remote control transmitter and MC14458 remote control receiver IC's. A versatile remote controller. Part 2. Remote-control system. Part 1. Beginning a discussion of the systematic approach needed to design remote control systems. Remote-control system. Part 2. Remote-control transmitter uses DTMF (dual tone multi-frequency) signals Remote-control system. Part 3. DTMF receiver. Remote-control system. Part 4. An output decoder for the DTMF transmitter-receiver. REACTS 7000 (Radio-Electronics Advanced Control System). Part 1. Introduction to building a control/robotics computer based upon the DataBlocks, Inc. "Altair II" system (a complete line of modular control elements). Use this sophisticated control computer to operate almost every appliance or system in your home. REACTS 7000 (Radio-Electronics Advanced Control System). Part 2. An in-depth look at the CPU board's circuitry which is built around the Z80 microprocessor. REACTS 7000 (Radio-Electronics Advanced Control System). Part 3. Build the CPU module. REACTS 7000 (Radio-Electronics Advanced Control System). Part 4. High-speed semiconductor-disk system. REACTS 7000 (Radio-Electronics Advanced Control System). Part 5. How REACTS can perform useful tasks in the home. REACTS 7000 (Radio-Electronics Advanced Control System). Part 6. Build a digital door lock, an appliance controller, a security system, and a sprinkler controller for your garden. REACTS 7000 (Radio-Electronics Advanced Control System). Part 7. Adding a CRT controller and printer port. RS-232 monitor/control system. Hardware and software of an I/O control system that interfaces to your personal computer through an RS-232 port, is modular, and has full duplex operation for both input and output. Est. cost: $50. REACTS 7000 (Radio-Electronics Advanced Control System). Part 8. Data registers and building the CRT controller/keyboard interface. REACTS 7000 (Radio-Electronics Advanced Control System). Part 9. Wireless home automation. Using the REACTS system to control X-10 remote control modules. REACTS 7000 (Radio-Electronics Advanced Control System). Part 10. Wireless home automation. Using the REACTS system to control X-10 remote control modules (continued). REACTS 7000 (Radio-Electronics Advanced Control System). Part 11. A battery-backup power supply. Overview of techniques for controlling large 120-volt AC light bulbs directly from a personal computer. | |||||||||
Copyright © by Norman Lathrop Enterprises. All Rights Reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means (electronic, mechanical, print photocopying, recording or otherwise) without the prior expressed permission of Norman Lathrop Enterprises, except as permitted by law. |
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