Controlling LED Arrays on TCP/IP Networks

The new Color LED matrix controllers from Spark Fun Electronics provide a fun way to control 8 x 8 color (RGB) LED matrices. Connecting directly onto a common cathode RGB 8 x 8 LED array, the controller "back pack" provides a simple serial interface...

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Bingo!!! (on your tv)

This design is based on the video DVM and cronograph design. It supports color, so numbers not yet drawn (all but 1 and 87 in the picture on the left) are displayed in green and the others in white. White lines are ...

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Rain detector

Rain Detector #1: Rain Detector ...

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Good UHF Schematics

Good UHF Schematics CMOS Inverter VCO tunes octave to UHF: 11/19/98 EDN-Design Ideas UHF T Volt Preamplifier: ...

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Keypad Circuits

µC Provides Wireless Keypad Control: 10/08/98 EDN-Design Ideas 4 Bit µP`s a / D Converter Decodes Keypad`s Inputs: 10/13/94 EDN-Design Ideas 4 Digit Keypad: ...

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