Projects in the July 2002 issue of EPE Magazine | |
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For more background on the original Stylophone, visit www.stylophone.fsnet.co.uk
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![]() - intended primarily for use in kitchens, this unit will keep any worktop lighting powered on for as long as someone is using the worksurface. Waving your hand near to the IR switch turns on the lights for a preset period. Also, if you stay in the work area the unit will remain triggered. |
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![]() - using a smooth-action 360 degree rotary switch and some standard 4000 CMOS logic, this design emulates the action of a rotary combination lock, energising a solenoid latch when the correct number is dialled in. Offers approximately twice the security of a 4-digit keypad, it is also able to send a secret "panic" (duress) signal to another location. Presettable combination using wire link selectors. |
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Special feature: using the PIC PCLATH command - how to access PIC addresses beyond 2K and place tables outside of the basic 256 byte block.
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Also in this issue: Teach-In 2002 Part 9: Filters, Sampling, A-D Conversion, Sampling. Nuclear Radiation Sensing. New Technology Update - how holographic techniques could revolutionise computer data storage; Circuit Surgery examines bandgap voltages; Ingenuity Unlimited - readers' own circuits. |
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