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A Charlieplexed digital clock which controls 90 LEDs with 10 pins of a PIC 16C54 microcontroller.. Charlieplexing (also known as tristate multiplexing, reduced pin-count LED multiplexing, complementary LED drive and crossplexing) is a technique for accessing a large number of LEDs, switches, micro-capacitors or other I/O entities, using relatively few tri-state logic wires from a microcontroller.
Digital Addressable Lighting Interface (DALI) is a trademark for network-based products that control lighting. The underlying technology was established by a consortium of lighting equipment manufacturers as a successor for 1-10 V/ 0–10 V lighting control systems, and as an open standard alternative to several proprietary protocols.
Remote Device Management (RDM) is an addition to the DMX512 control protocol for stage lighting equipment, introduced in 2006. DMX512 was developed in the late 1980s as a standard protocol for lighting consoles to communicate with dimmers, but has since been used for more complex applications, including the control of intelligent lighting fixtures.
With version 3 and up: Data Block Collection, starting at byte 4, ending immediately before the byte specified in byte 2. If byte 2 is 04 , the collection is of zero length (i.e. not present). If byte 2 is 00 , no DTDs are present and the DBC takes up the entire remaining EDID block ahead of the checksum.
+9.5–12 V → on/4:3; Pin 9: RGB Green ground (pin 11 ground) Pin 10: Clock / Data 2 Control bus (AV.link) Pin 11: RGB Green up Component Y up: Pin 12: Reserved / Data 1: Pin 13: RGB Red ground (pin 15 ground) Pin 14: Usually Data signal ground (pins 8, 10 & 12 ground) Pin 15: RGB Red up S-Video C up Component P R up: Pin 16: Blanking signal ...
A 1953 paper "Coding by Feedback Methods" [1] describes "decoding networks" that convert numbers (in any base) represented by voltage sources or current sources connected to resistor networks in a "shunt resistor decoding network" (which in base 2 corresponds to the binary-weighted configuration) or in a "ladder resistor decoding network" (which in base 2 corresponds to R–2R configuration ...
A single or a few LED junctions may be packed in one miniature device for use as an indicator or pilot lamp. An LED array may include controlling circuits within the same package, which may range from a simple resistor, blinking or color changing control, or an addressable controller for RGB devices. Higher-powered white-emitting devices will ...
For example, a chip with XGA resolution has an array of 1024×768 pixels, each with an independently addressable transistor. [5] In the LCoS device, a complementary metal–oxide–semiconductor (CMOS) chip controls the voltage on square reflective aluminium electrodes buried just below the chip surface, each controlling one pixel.
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