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I finished the second version of the sump pump alarm. This revision has the following changes: read more...

• 3.9 V Zener (D1) instead of 5.1 V. This gives ~5.1 V to the PIC with a fresh battery. The PIC is rated down to about 3 V at the 4 MHz clock frequency used, so this keeps it running at least until the battery drops to 6.9 V, instead of cutting out at around 8.1 V. Depending on the discharge curve of a particular battery in this application, that could add some extra alarm time.

Do you love coffee? Or soda, or some other perky drink? Then perhaps you are annoyed now and then by reports of the health benefits of tea, with its antioxidants and its relaxing cultural traditions. Or perhaps a tea snob has extolled the refined subtleties of flavor it offers. So you know it’s a habit you should cultivate, instead of whatever depraved beverage or daily habit you currently pursue in the search for stimulation and/or security.

Well, I’m here to help you out. Because the procedure I am about to set forth will, if followed faithfully, allow you to say, honestly and with pride, “No thanks - I’ve tried tea, and I hated it.” read more...