Monitoring server statistics with serial display
The easiest way of outputting any information on PC is to send it via serial port. Kerry didn’t want to waste a dedicated monitor simply for displaying server status messages. This would men running monitor that requires some power and of course why use monitor jus for few lines of text. So he came up with an Arduino project which accepts messages via serial port and displays on a standard alphanumeric 2×20 LCD. There is a Linux shell script on a server side that runs periodically and updates server statistics. Then it sends this information over serial port where Arduino captures it. So with this simple solution he avoided wasting power and monitor. Of course statistics message is longer than LCD is capable of displaying. So whole text is stored in text buffer then it can be scrolled with four buttons....
Source: Embedds.com - Wednesday, 15 February
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