You’ve probably exposed to many different types of remote display before, but have you ever built the remote display that based on PIC16F873?

The PIC16F873 has an asynchronous communication function (USART) and it’s very important for this project. The information that has been setting with the control unit is displayed on the large-sized display installed in the about 10-m left place using the cable. Since the displaying unit is only 25cm height and 40cm width, thus it wasn’t too large in size!

The main purpose of this developing this equipment is to inform the people who gather to certain places, such as church, hospital or public library about the number of the hymn/queuing. Hence, the contents to be displayed are only limited to three digit figure.

For constructing the LED display, red LEDs with 5mm diameter are used for the displaying of a letter, while the large-sized 7 segment LEDs are used to display the digit. In order to cut off the cost, the LED matrix won’t be used in this project.

If you want to make the display can be seen from the distant place, then a purple acrylic board can be applied on the displaying part as well!