In last month’s column, I discussed a low-voltage solar energy system I built for lighting my Scout troop’s large storage shed. I described the battery I chose, and the Modbus protocol with RS-485 serial communication used for remote monitoring of the system’s performance (“sniffing” or listening to communication on the bus, and decoding each message). This month I expand on this node’s capacity to do much more than just listen and decode.
How to factory reset your Nintendo Switch or Switch OLED androidpolice.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from androidpolice.com Daily Mail and Mail on Sunday newspapers.
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Whenever your HP printer starts flashing lights on the control panel, it generally indicates that the printer has encountered a problem. For instance, a
If your HP printer shows an E4 error message, it indicates that there is a paper jam on the printer. Generally, the letters E and 4 will blink alternatively