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Return to BlogBusiness Card Using Dot Matrix LEDs
Posted Feb 06, 2012 at 3:34 pm
Figure 1
A full graphical LED display is the main purpose of this project which can be customized for a number of scrolling messages on a business card.
Innovative image is an important factor for those who ere involved in high-value contracts or that would suit a high-tech business using this card. The design of the card is for people to prevent throwing it away. It uses a 5×15 matrix LED that is connected to a single PIC microcontroller with a handful of resistors and switches to complete the design. The battery can last for several years by keeping the microcontroller in sleep mode unless the buttons are pressed. This would allow a couple of thousand displays of the messages.
When soldering the components on the board, the smallest component goes first and the LEDs are put in the right way. An easier way to test the LEDs is by attaching a couple of wires to a small 1.5V battery and touching the leads on the ends wherein a glow would indicate the right way around.
A matrix code is used to program the microcontroller to provide four messages for each of four corresponding buttons.
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2 years ago: Whoala! For sure my clients will always keep this type of business cards. Maybe even their kids would be playing on this ei!