glitch25: (Default)
 So lessee.  Activities that are contributing to happiness, pleasure, and accomplishment.

I've fallen down the rabbit hole of microprocessor based electronics.  It started when I decided to take a Wifi smart plug and jailbreak it from its original firmware that phoned home to China.  In doing so, I gained the ability to control it locally, and now I don't have to worry about what it is telling the world about me and my switch habits.  To do that for some of the switches I had was relatively simple through an over-the-air process.  But some of the newer models had firmware that deliberately interfered with this.  So that meant breaking out the soldering iron and opening up the plugs and getting access to the microprocessor that lives inside.  It turns out that most of those wifi smart plugs use a similar base microprocessor chip, and if you have physical access to the chip itself, you can plug it into a computer and reprogram it.  So with the help of Google, I worked through that process and was able to jailbreak these as well.  But in the process of finding out that there is a common base electronics chip, I learned that the chip is relatively inexpensive, and unto itself can do a whole lot with the proper firmware. 

So I bought my first set up breakout-boards with the chip (those are little circuit boards with the chip included that make it easier to access the pins and make it easier to program).  These chips support coding and also have a variety of input and output capabilities, and there are some established pre-built firmware that makes it really easy to do things with it, including handling LED strips.  In this case, I went with RGB LED strips (color changing), and my first project was to use a firmware called WLED as a base for what became a WiFi connected busy light for outside the office to help the rest of the household know when we were on phone calls and for us not to be disturbed.  WLED was a little bit overkill for it, but because of the ease and flexibility, it worked out really well.

I ended up getting lengths of what essentially are RGB Christmas lights, and using another chip, was able to create Wifi enabled color changing lights with custom patterns.  I had been using pre-designated LED Christmas lights before, but it meant having several strips for different purposes.  With the RGB LEDs, I could have one set and make them doing multiple things.

Both of these projects integrated into my existing home automation software called OpenHab and enabled me to control the lights from my phone or any other device inside the house.  I still say there is something to be said for being able to climb into bed and shut off all the lights while tucked in.

Moving on, I picked up some capacitance moisture sensors and built out a plant watering sensor that lets me know when it's time to water the plants.  That was less of a need and more of a "because I can" project, but it was fun working it out.

The latest project using the same chips will be to integrate a temperature sensor along with a transmitting IR LED to turn on the portable AC when the temperature reaches a pre-set temperature. 

There are so very many different things you can do with these.  There are some modules that support cameras or relays to turn things on and off. Or to attach to various kinds of sensors that either can just report the data, or can be programmed to do other things as that data changes.  

Totally deep rabbit hole.  So far I haven't gone too far off the path on what they can do, but my mind spins pretty regularly on ideas.  It has definitely gotten me back into the tinkering and I'm looking forward to future stuff.



glitch25: (Default)
I was thinking about my latest interest in prop making and the like, and the fact that for my successes, I have no prior specific experience working in the field. But I always had the urge to tinker.

They say some people are born with a silver spoon in their mouth. I was born with a screwdriver in mine. :-)

There are stories about me when I was 2 years old attempting to attack the neighbor's sewing machine, with a screwdriver in my hand and a gleam in my eye.

This desire has continued to follow me over the years.

When I was 5 years old, Labor Day of '77, I had been tinkering with a Christmas gift from the prior year. I had a battery powered train set that would circle the plastic track, stop at various points to either pick up, or drop off the little people, and in this process, they'd ride a ferris wheel and then slide down a slide from the top to a pick-up point further down the track.. and it would continue over and over as the train made circuits.

That fateful afternoon, I discovered that along with parts from my Erector set, I could wire up the train and make it go either forwards or backwards depending how I wired the battery. This revelation excited me greatly, and I showed my Mom and Grandma as they were leaving to enjoy the Labor Day sales. .I ran downstairs to show my Dad. However, somewhere between my room and where Dad was sitting watching the Tube, I either lost or forgot a part, so I rushed back up the stairs and proceeded full speed down the hall to my room. Not looking up, like kids sometimes do, and apparently veering off course, I met with the corner of the wall of the entrance to the hallway, and stood stunned from the impact. Wall corners, on walls covered with drywall are reinforced with a special steel corner strip that helps prevent chipping of the wallboard. I slammed my forehead directly onto that corner strip at a full run. I remember being dizzy and feeling that pain you get when you bump your head, but nothing too significant.. Just stunned more than anything. Didn't think much of it until I looked down to the house shoes I was wearing, and saw droplets of blood beginning to collect on them. I still don't remember freaking out, but I do remember calling to my Dad downstairs and explaining that he needed to come up, that something bad had happened.

Some 12 stitches later (6 subcutaneous, and 6 external) in my forehead, and my little attempt at tinkering became a late night.

I still didn't really notice any pain until they injected the local anesthetic into the edges of the wound to prepare for the stitches (apparently the injections hurt a lot!)

I do remember getting to have Whataburger that night, which was a treat.

I have a nifty scar that has migrated over to just above my left eyebrow that is a little reminder of that day.

I often took broken things apart and either fixed them, or at least learned how they worked. Occasionally, I'd even take apart things that already work, and get them back together again in working order.

I remember at 12 or 13 getting my first taste of 110 volt house current running through my arm. More scared than hurt at that point. Somewhere along the line, I had an instinct for electricity, and for all the times I've come in direct contact with it, I've always known how not to get electrocuted. Not long after that time, I found out that an AC induction motor doesn't work the same as a DC motor, and swapping "polarity" doesn't work, but that wiring it up wrong will pop the circuit breaker. :-)

This lead to many other constructive, and not necessarily constructive things including using an electronic relay attached to an old style DC house doorbell to trigger the transmitter of a more modern wireless button doorbell system whose ringer was on a whole different floor. And to locking the wireless garage door opener in my glovebox, but modifying it so that I could actuate it from a hidden button on my dash board.

In high school, a friend's younger brother was swinging around a bat in the livingroom and it slipped out of his hand and into the VCR, cracking the circuit board in half. I remember the challenge of soldering the delicate tracings back together and of course being told I couldn't do it, only to have repaired it successfully.

Fun stuff!

So while my tinkering skills are new to theatre, they are quite seasoned with me in general, and it is nice to have an outlet to play these days beyond what I normally do.

Unfortunately, blood sacrifices continue to be part of the work, but I've realized that if I give freely, the returns are well worth it. :-)

November 2024

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