Most of the SpaceX Falcon launches we see from the house are Dragon CRS missions headed toward the ISS, so I wasn’t expecting to be able to see today’s Falcon Heavy USSF-67 launch since it was supposed to be headed to a geosynchronous orbit.
We stepped outside to have a look anyway just in case and much to my surprise, we saw the exhaust trail pretty clearly a little bit lower toward the horizon. This photo was a couple minutes after the launch and just after the side boosters separated.
Here the side boosters have begun turning back toward their landing pads while the center booster continues on.
The two side boosters are visible as two specks of light. After this, we could see them flash every now and then as their steering jets fired.
This was the first time we’d seen a Falcon Heavy and the two side boosters from the house. It was pretty cool.
I’ve got a number of power supplies that I can use to supply power to the various projects that I’ve got on the workbench.
There’s the obvious wall power and a variety of wall warts of different voltages and current ratings. I’ve got wall warts and power supplies ranging from 5V all the way up to big chunky 28V power supplies.
For projects that require a beefier power supply I’ve got an unregulated power supply that gives me up to 30VDC or 25VAC. It doesn’t get used too often, but comes in handy when it’s needed. There are also a few 13.8V power supplies that I can steal from the radios in a pinch.
Most of my projects don’t have big current draws though, so more often than not, I’m just using batteries to power my projects. One that I use most often is a 12V battery pack made by wiring 2 quad C-cell battery holders together and putting a standard 3.5mm DC barrel connector on it.
DC barrel connectors can be easily attached to those snap connectors used for 9V batteries providing another power source (here’s one from Sparkfun if you don’t want to make one).
Some battery holders I have also use those snap connectors, so I can have battery power sources ranging from 3V to practically as high as I need.
I’m often using mostly used batteries pulled out of other things like TV remotes, smoke detectors, etc. Usually they still have plenty of juice left to power my smaller projects.
While charging up some old sealed lead acid (SLA) batteries pulled from my battery backup UPSs, I got to thinking about how I could put them to use as an additional power source. I’ve got plenty of three terminal voltage regulators that would provide the voltages that I’d need.
I sketched out block diagrams for a couple of possible concepts. One would switch between several different voltages but provide just a single output, while the second would provide multiple outputs and have toggle switches turn to each one on or off.
Probably wouldn’t do 3.3V, but the others would definitely be feasible. 12V would probably be just a direct connection to the battery rather than going through a voltage regulator. Since I’ve got 2 SLA batteries, I could even put them in series for a 24V source and give myself a wider range of regulated voltages.
Still in the concept stage for this and haven’t started building anything yet. Seems like it could be a fun project.
After plowing through most of Florida and causing much devastation as a Category 4 storm, Hurricane Ian is heading toward us as a much milder, but very large Category 1 hurricane.
The tropical storm force wind field (yellow blob) is about the largest I can remember seeing from a storm. The forecast track for Ian has been shifting more east over the past few days after the storm crossed over Florida, giving it a chance to regain a bit of strength before coming on shore again. Good for us, but maybe not so much for places further north along the coast. Looking like Ian will make another landfall around the Pawley’s Island/Myrtle Beach area of SC.
Flooding is pretty much the main concern, and with a projected high tide of 9 feet, there’s definitely going to be some of that in the lower areas
Not expecting anything too serious to happen here at the house. Patio furniture got moved into the garage, and we’re set to deal with any extended power outages if that happens (hopefully not).