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Use an LED Matrix Horizontally - 02/16/12 EDN-Design Ideas Using one 5×7 LED matrix horizontally instead of vertically allows the display of two characters instead of one. LEDs provide a convenient way to electronically display information. Although the seven-segment LED display, arranged in the form of the digit 8, is common, it does not allow the display of some alphanumeric characters. A 5×7 LED matrix allows the display of all ASCII characters, as well as graphics shapes. LEDs provide a convenient way to electronically display information. Although the seven-segment LED display, arranged in the form of the digit 8, is common, it does not allow the display of some alphanumeric characters. A 5×7 LED matrix allows the display of all ASCII characters, as well as graphics shapes. The circuit in this Design Idea shows an unconventional way to use a 5×7 LED matrix.
__ Circuit Design by Benabadji Noureddine
Versatile Car Scrolling Display, Part 1 - This project started out as a digital dashboard display but has grown and can be used in any measurement or data logging application where you have 9-12V DC available. It can monitor up to six signals and display up to 10 computed values in a scrolling or static readout on a 7 x 15 dot matrix LED display.__ SiliconChip
Versatile LED Display - This circuit uses an erasable programmable read-only memory (EPROM) to display various light patterns on LEDs. Since bicolour LEDs (comprising green and red LEDs) have been used, display is possible in...__ Electronics Projects for You
VFD (Vacuum Fluorescent Display) & Filament Power Supply - The LT3581 is a PWM DC/DC converter with built-in fault protection features to aid in protecting against output shorts, input/output overvoltages, and overtemperature conditions. The part consists of a 42V master switch, and a 42V slave switch that can be tied together for a total current limit of 3.3 A. __ Linear Technology/Analog Devices App Note, Jan 16th 2012
Waveform Monitor with LCD - The result was a project that includes a waveform capture circuit, a graphic LCD (Liquid Crystal Display) and a control panel with LED indicators. The details of the Graphic LCD display unit, composed of the LCD module, a serial interface, and bias supply were published earlier on this site, __ Designed by Dick Cappels
White LED driver backlights LCD & keypA - D - 13-Nov-03 EDN-Design Ideas Designers widely use white LEDs to backlight color LCDs and keypads in handheld devices, such as cell phones, MP3 players, GPS navigators, and PDAs. Their spectrum and brightness represent near-ideal light sources. One possible configuration for a phone or a phone/PDA combination is to have a group of three LEDs to light the display and six LEDs for the keypad Design by Fabien Franc, Catalyst Semiconductor, Sunnyvale, CA
White LED driver provides 64 step logarithmic dimming - 10-Jun-04 EDN-Design Ideas The circuit of Figure 1 is designed for portable-power applications that require white LEDs with adjustable, logarithmic dimming levels. The circuit drives as many as four white LEDs from a 3.3V source and adjusts the total LED current from 1 to 106 mA in 64 steps of 1 dB each. The driver is a charge pump that mirrors the current ISET (sourced from IC3's SET terminal] to produce a current o Design by William Hadden, Maxim Integrated Products, Sunnyvale, CA
White-LED Driver Touts High Efficiency - 12-Jun-03 EDN-Design Ideas White LEDs, the most recent addition to the LCD backlight, find common use in providing backlight for color LCDs. Thanks to their size and white-light output, they appear in small, portable devices with color displays, such as PDAs and cellular phones. Like other LEDs, a white LED needs a constant-current source—typically, on the order of 15 to 20 mA Design by Dimitry Goder, Sipex Corp, San Jose, CA
Wide Band Fuel Mixture Display - This document is an introduction to the Wideband Fuel Mixture Display (FMD) .
Wideband Air-Fuel Mixture Display Unit - This Wideband Oxygen Sensor Display can show your car's air-fuel ratio as you drive. It's designed to monitor a wideband oxygen sensor and its associated wideband controller but could be used to monitor a narrowband oxygen sensor instead. Alternatively, it can be used for monitoring other types of engine sensors.__ SiliconChip
Xtimer V1.0 - Easy build 4-channel timer, suitable for energy saving, simple hardware and nice firmware with c coding. Automatic power down mode, simple settings, optional buzzer for sound alarm. __ Designed by Wichit Sirichote
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