first-ever successful plastic weld
Wednesday, April 17 2019
The fix was so momentous that I felt like I could just relax for the rest of the day. At some point I worked on a way to do file-based backup storage of configurations from a database (because the databases in this application are frequently overwritten). I'd brought some microcontroller components to tinker with in the Arduino environment, because I wanted to re-implement the code for my Ahmed Mohamed clock using an Arduino Leonardo and a MaxMatrix LED matrix. For some reason, that old clock code refused to work, but I was able to get a demo sketch working, sort of, though everything was rotated 90 degrees from the way it was supposed to be.
Tonight after Ramona and I got home, she took advantage of the nice weather and lay in the yard while I made myself a sandwich. I found some vegan "lunch meat" that had dried out and gone moldy, so of course I gave to Ramona. It was so hard that it sounded like she was chewing on a chew toy as she labored to break it into pieces small enough to swallow.
Later I got out my tools and tightened the air conditioner belt on the Subaru, which has been producing an embarrassing squeal of late. Unfortunately, I managed to break a 12mm socket trying to loosen the rusty old nut securing attachment of the slack-accepting pulley. Its steel had probably been contaminated with the tears of Chinese orphans.
Another successful household chore was using my compressor-powered plastic welder (it's basically a solder reflow gun) to melt the broken-off handle back onto a plastic measuring cup. The results were ugly, but the reattached handle seemed solid. That would be my first-ever successful plastic weld.
One final thing I did before taking 100mg of diphenhydramine and crawling into bed was was soldering together an I2C "backplane," which was basically four conductors, each with a number of pins connected to it. This would allow me to connect a microcontroller to multiple I2C devices for some purpose. The plan was to take it to work so it could help me re-create my Ahmed Mohamed or build some other project needing an LED matrix.
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