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temporary ponds and rivulets Sunday, June 21 2015
Strong rains for much of the night filled the greenhouse excavation all the way to its drainage pipe for the first time in weeks (if not months; the USDA drought monitor says we're still in a drought). The rain also filled the forest with temporary ponds and rivulets, making them roar with the sound of running water. Unfortunately, the rain had stopped and the clouds had begun to break up before I could do the things that I like to do when it rains, especially emptying and refilling the kiddie pool (which was full of debris from having been a play puddle for a toddler). But I emptied and refilled it anyway, confident it would rain again soon. Early this evening another downpour came, quickly refilling the rain barrels from which I'd taken water for the kiddie pool.
I did some more work on my USBTiny slave I2C project, though I didn't actually get much closer to getting it to work. To make things easier on me, I set up two environments for working with the AtTiny chips: one a programmer hooked up to a serial cable and a 433 MHz receiver that I could use for reprogramming it, and the other a breadboard attached to a serial cable, a 433 MHz receiver, and an Atmega328 master. This latter circuit is similar to the final circuit the AtTiny will end up in, and allowed me to test the actual slave functionality (which, I've discovered, interferes with ISP programming). But even with two separate environments, it was very easy to get confused by the jumper wires. So I put a lot of effort into pre-coloring wires red, white, black, green, and purple so I could quickly distinguish them by function. Red is always the positive power supply, black is always ground, and the other colors stand for data and timing signals.
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