Arduino Arsing About

 A friend has a Sofar HYD 6000-ES hybrid PV inverter installed, and I was interested in The possible security implications of its nominal WiFi/Internet connection How to get the logging data directly into one's own software and bypass the "cloud" which is located in China! Security Issues In respect of the first point, this webpage has some interesting insights viz. the Access Point (AP) interface remains active even when you've configured it as a Station (STA) to access your home WiFi, including the following interfaces, according to the article: 53/UDP, DNS 80/TCP, HTTP 8899/TCP, Datalogger Info 48899/UDP, HF AT Interface Depressingly, the article shows how easy it is to hack the passwords from copies of the firmware :-/, so given the importance of the kit, it's probably good to take some remedial action. Possible actions: Access Point access: The configuration screens allow for the SSID to be hidden, which at least prevents casual detection/connection, althoug...

The visiting daughter seemed to be spending a long time in the shower, as the pump motor ran and ran... However, she then appeared downstairs, and suggested that there may be something wrong with it, as she'd turned it off and the motor was still running! Damn. With her spouse and the g-kids also staying, it could be a problem. First stop, press the "test" button on the in-circuit RCD to kill the power... View of pump, pointing to one of the two sensors I already realised that the pump turns on when the state of the water in the output lines changes, pressure, flow, whatever. Some Googling revealed that equivalent 3bar pumps are not cheap! So just buying one and replacing it myself was financially not the first option. So - repair? A photo of the inline switches revealed the text "HAMLIN 59600-444". Hamlin apparently make reed switches, and although I'd not really given much thought to how the pressure/flow switches might work, this seemed pretty reasonable....