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How not to power an acoustic modem
How not to generate a ±10 V power supply I feel pretty dumb talking to nobody like this. My domain name doesn’t even work yet, but I guess logging is what engineers do. And I’m imaginative enough to...
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How I’m powering my acoustic modem
A ±10 V power supply I’ve covered how not to power an acoustic modem, and how I’d like to power an acoustic modem, now it’s time to tell how I’m doing it right now. To restate and clarify the problem:...
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Improving range on the infrared channel
The range on the infrared channel, which I discussed in the last entry, is probably enough; but I’d like to increase it a bit. With more range I can space modules farther apart if needed, and...
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Un-improving range on the infrared channel
It turned out doing software UART was a terrible idea. The processor is way too slow to support a reasonable baud rate. I did figure out how to use a comparator though: the key phrase I was missing...
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Waterproofing 3D Prints (and also making them look super-cool) with Epoxy Clay
It’s pretty hard to get a watertight object out of our Makerbot Thing-O-Matic. The walls of printed objects are pretty solid, but unexpectedly porous; even a thick block printed with 100% infill will...
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