Abstract: An apparatus for monitoring and controlling a hydroponic installation which measures various sensors, controls electrical devices, and provides a rich user interface through a standard web browser accessible anywhere on the Internet. Network connectivity allows the operator to manage the system remotely, as well as view recent and historical data through web pages. Digital cameras, of the kind typically used with PCs, provide visual feedback. The apparatus can notify the operator in the case of certain predetermined conditions, using a variety of messaging methods, including email, SMS or MMS page. The operator can remotely initiate control through reply messages. An industry-standard expansion bus provides the ability to attach external devices for additional functionality. Network access can be provided by Ethernet, Wi-Fi, or a nearby cell phone with Bluetooth.

Abstract: An MS DOS and MS WINDOWS compatible file system for avoiding loss of data in a memory unit if power is interrupted while new data is being written. The file system uses an ATA write command for erasing a data reserve sector and writing the modified data including the new data into the data reserve sector; erasing a control reserve sector and writing control data into the control reserve sector; erasing the intended operational sector and writing the modified data into the intended operational sector; and then uses an ATA erase command for erasing the control reserve sector. At power up or insertion of the memory unit, the control reserve sector is tested. If the control data is non-erased the host uses the copy of the modified data in the data reserve sector for replacing the data in the intended operational sector.