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µC Provides Wireless Keypad Control - 10/08/98 EDN-Design
Ideas.....Portable systems, such as telephone handsets, make extensive use
of low-dropout (LDO]regulators. se components provide noise-sensitive
parts with a stable power-supply line.....Scroll to find this specific
article..... [Design Idea by Lloyd Khuc, Motorola Inc, Austin, TX] |
2 Way IR Term - This unit provide 2 way IR communications using
a numeric keypad and an LCD display. Data is sent and recieved in
ASCII with no regard to what the data means to any particular device.
…..... [Luhan Monat - Mesa Arizona] |
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20MHz VCSEL 3mW Laser Test Circuit - This circuit takes
advantage of some new vertical cavity surface emitting lasers (VCSEL) that
don’t require light output control circuits...... [Designed by David A.
Johnson] |
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3 Channel IR Remote Control - This project is a 3-channel IR
remote control with 3 output relay and easy to build. Features: CPU
PIC12F629 at 4MHz crystal for Tx/Rx, 3 channel output relay, The Tx use
sleep mode for saving battery power,….(electronic schematic added 11/08)
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4 & 8 Infrared-Proximity Detectors (TSOP4830) - In this circuit the TSOP4830
is used as a sensitive infrared detector that does not require shielding from room
lighting. The detector will work under almost any lighting condition from complete
darkness to full sunlight….scroll down for this one…. [from Rob Paisley's Model Train
web site] |
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4 channel infrared remote relays - …. |
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40kHz IR Tester - Use this circuit to test if the light coming from your
40khz IR emitter is really emitting the right frequency. The schematic says to use a
GP1U5X ir module, but probably any 40khz detector module will work.… [Andy Wilson's
site] |
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40kHz LED Test Signal Generator - This 40KHz crystal controlled oscillator
circuit drives an infrared LED with powerful 40ma pulses. The circuit can be
used to test optical communications circuits, designed to receive 40KHz modulated
light signals..... [Designed by David A. Johnson] |
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40kHz TV-VCR Light Source Repeater - This circuit is designed to be placed
directly in front of a standard TV or VCR remote. The exiting light pulses produced by
the circuit match the pulses from the remote but are about 10 times more powerful.
Using the device, the remote can operate a TV or VCR over three times the normal
distance..... [Designed by David A. Johnson] |
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555 Based IR Proximity Detector - Sometimes you want a simple solution to a
problem and you don't mind if your main controller has to do the work. This IRPD
requires the main robot processor to choose which side to look at, and.....(added
05/06/07) |
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555 Based IR Proximity Detector - Several robotic projects on the page,
please scroll to find this one. [Dennis Clark's website] |
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555 Timer 40kHz Infrared Oscillator - (electronic circuit added 9/03)
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8 channel IR remote control - This IR remote control that you can use to
control other devices or circuits up to 8 devices. The control codes are sent in RC5
format modulated to about 38 kHz carrier frequency.The IR transmitter powered by the
CR2016 which is a 3V button Cells Battery CR2016. To extend the life of the battery
this is done by putting the CPU into SLEEP mode for most of the time and wake-up only
when a key is pressed. ….(electronic schematic added 11/08) |
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