All posts in the 'Display projects' Category

Make a Laser Matrix Projector for the iPhone

Posted on 21 May 2009

Make a Laser Matrix Projector for the iPhone
The idea is to add some kind of projector capability to mobile phone (e.g. iPhone) that isnโ€™t too complex or expensive. Instead of using an expensive mini projector. This project use lasers instead to any bitmap font using a matrix of laser points, which is controlled by iPhone.[more]

Posted in : Display projects | Laser projects

Classic LED 7-Segment Displays

Posted on 16 Apr 2009

Classic LED 7-Segment Displays
Here is a simple digital clock using classic LED 7-Segment Displays from vintage calculators and vintage led watches. punkky writes:
I have made simple clocks using these displays and PIC16F887. The real thing looks much better than the photo. The displays are bright red and sun light viewable. Very COOL!!! They are on my computer desk and I love to see them very often.
[more]

Posted in : Clock projects | Display projects | PIC projects

Giant ShiftBrite Election Meter

Posted on 04 Apr 2009

Giant ShiftBrite Election Meter 2Giant ShiftBrite Election Meter
Here is a giant red/blue bar graph to display the electoral vote at Garrett ’s house. It uses 32 ShiftBrite RGB LED modules, two CSG-4M LED numerical displays, a Cubloc CB405 with Quick Start 1000 board, and an ACODE-300B Bluetooth module and run on a small 400MHz Linux server.[more]

Posted in : Display projects | LED projects

Traffic Light Control Circuit

Posted on 14 Sep 2008

Traffic Light Control Circuit
This page features a circuit that has twenty open collector outputs that turn on one at a time in a continuous sequential manner. The circuit make use of the 74LSxx family of TTL integrated logic devices. The circuits are designed to drive light emitting diodes or low current, low voltage incandescent lights but can also drive other loads of up to 80 milliamps.[more]


Posted in : Display projects

AVR-based Scrolling text display

Posted on 15 Aug 2008

AVR-based Scrolling text display
AVR-based Scrolling text display
The display is controlled by an Atmel AVR-family microcontroller, AT90S2313.The display has seven rows containing 50 LEDs each. The display controller consists of seven transistors and seven 8-bit shift registers which all are controlled by the MCU (AT90S2313). Each transistor drives one row selecting whether it’s enabled or not. The shift registers are chained together, so their serial input is converted to parallel output of 56 bits, 50 of which is used to drive the columns. The last six bits remain unused.[more]

Posted in : AVR projects | Display projects

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