|Projects in the July
2001 issue of EPE Magazine
Interface and Data Logger - this easily built module offers PIC-control
of Epson-compatible dot matrix printers, it also has a role as a data logger
producing a hard copy printout from measurement or data capture apparatus.
Our constructional article provides a full description and source codes
are available free from our FTP site.
SERIES! Perpetual Projects - perfect for the novice, our series of mini
circuits uses a modest solar panel to charge a "Gold Cap" capacitor
during the day, which in turn powers a custom-created mini circuit "for
ever"! An LED Flasher, Loop Burglar Alarm, Rain Alarm, Bird Scarer
and more besides are then yours to build in this great new series! The same
universal mini-PCB can be used for any of the projects. A totally fascinating
series, not to be missed, even experienced constructors are sure to want
Signal Repeater & Indicator For the ultimate in accuracy
radio-controlled clock signals are not new but this circuit can be used
in a shielded building, such as industrial premises made from preformed
steel. Utilises the Rugby 60kHz MSF transmission.
Surround Amplifier - an inexpensive easy to build stereo amp. that can
also produce pseudo surround sound with an existing stereo amplifier. Gives
a "true" 1W r.m.s. per channel from a 12V supply, which
is plenty of sound!
Also in this issue, The World of the PLC - Programmable
Logic Controllers play a vital part in industry at the heart of control
systems for many production and manufacturing systems. Our special feature
outlines the operation and purposes of PLCs used in many typical industrial
applications.Ingenuity Unlimited (readers' own circuit ideas), Circuit
Surgery looks at logic families and resistor voltage specs., New
Technology Update examines non-volatile memory based on CD-ROM technology.
Net Work The Internet Page looks at "Googlified"
newsgroups all your favourite features, in your favourite hobby