Welcome to Timothy John Weber's personal desk blotter/shoebox/refrigerator magnet/web site. The most recent additions are shown below, latest first. You can view specific types of content with the Navigation menu at left. You may contact me via the contact link above.

What's New

Sump pump alarm Mark II

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

  • Sump pump alarm 2 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.

No news is good news; more news

Well, I replaced the ground fault interrupt outlet that the sump pump was plugged into a month or two ago, and I haven’t heard a peep out of the alarm since. So that must have been the culprit all along. read more...

Bad Tea

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...

A gnostic ex-Catholic atheist Buddhist's Christmas carols

The following were actually written in the car one or two years ago; I just came across them again and decided it was the right time.

I’m dreaming of a green Christmas

I’m dreaming of a green Christmas
So I don’t have to shovel snow
’Cause when I start liftin’,
My spine starts shiftin’,
And soon, my back will start to go…

PICkit 2 modifications

Note: This page is obsolete, but I’m leaving it up for history. My current solution for automated control is here.

Microchip’s PICkit 2 is a good, cheap PIC programmer. One nice thing about it is that they’ve made the source code available. So you can tweak it if it doesn’t suit you.

In order to integrate it with the SourceBoost IDE, I added this command-line option: read more...

Syndicate content