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A Good IR Detector - Some of the companies put two transmitters,
one on each side of the detector, to get a good field of coverage for the
front of the 'bot and to detect left and right. 'Robots, Inspiration to
Implementation has a great schematic that you can use to build one of
these....diagram added 2/07)
A Very Stable 40kHz Clock (Rodney Radford) - ASCII format-A
circuit that I have used before is based on the CD4060 (14stage binary
counter) and a 640Khz ceramic resonator....(electronic circuit added 7/03)
Across The Track Infrared Detectors - This page presents
information on infrared - 'Across The Track' train detection circuits. The
circuits are designed around the LM339 quad comparator chip and can use a
wide assortment of matched infrared - emitter / detector pairs..…be sure
to scroll down to view all the circuits.... [from Rob Paisley's Model
Train web site]
An Infra-Red Remote Control Extender - This is a battery powered Infra-Red
Link that will allow you to change channels on your Satellite Receiver and operate the
controls on your VCR & DVD from anywhere in the house…. [Ron J's circuit]
Basic Infrared Proximity Detector - The circuits on this page are for an
Infrared Proximity Detector using the Vishay Electronics TSOP4830 "IR Receiver Modules
for Remote Control Systems"….Scroll down to view all the circuits…. [from Rob
Paisley's Model Train web site]
Basic infrared TX-RX - The transmitting section of this infrared tx-rx is
unusually simple but it works rather well: the infrared LED pulses at a frequency of
160Hz and its range, with its receiver, is between 2 and 4m depending on the
transformer used and the setting of the 100k pot. With other receivers it may reach a
range of 15m, without any lens but with a perfect alignment between tx and rx. The
receiving section uses an infrared phototransistor and an additional infrared emitter
is.....(added 9/07)
Basic Infrared Light Train Detection - In the circuit bellow the LED will
turn on when the infrared beam is broken. The value of the resistor R1 determines the
sensitivity of the phototransistor Q1. In most cases a value of 1 Meg or 470K ohm with
good results but every situation is different and some experimentation might be
needed..... [from Rob Paisley's Model Train web site]
Build an Infrared Night Scope - Building a night scope is easy if you have
the heart of it which is the image intensifier part. I would recommend using the PVS-5
module which uses 'MCP' or Micro Channel Plate technology. This is a U.S. 2nd
generation device and is rated at 15,000 times light gain. The resolution is one of
the best on the market. It was used in Desert Storm.....ASCII format. (circuit /
schematic design added 6/06)
