Lately I have been lazy about getting into my home, early in the morning I dislike rummaging through my pockets to get out my keys just to go through 2 doors just to get in and sit down. So I fixed this issue by making my patio door RFID accessible. With a few parts on hand and a whole bunch of time, I made a “patio un-locker”, because it only unlocks the patio door but does not lock it.
Category Archives: electronics
I have a few brocken micro helicopters lying around and deciced.to try a quick experiment.
I removed the tail rotor and electronics and connected the 2 main rotors together, by a piece of meral coat hanger.
What I forgot was, you need to have one of the rotors going the oposite direction to counter the rotation of the other one.
Failed but learned something. Back to the idea bin…..maybe I will create some fancy paper airplane.
Since I am to cheap to buy a real glue gun, I decided to hack the crappy cold heat glue gun.
all tou need is a 5v source and some wire and a soldering iron.
just remember the positove terminal is the one closest to the nozzle .
Now I never have to worry about the really crappy rechargeable battery that it came with.
Awhile back, at the expermental music garage sale in Chicago, I bought this cool looking device. It came in this nice metal case. I was planning on just using the case, but what I found inside was interesting and I decided to leave as is for now…..
so here are some pics.
Awhile back, I had recieved an oscilloscope from someone. a Conar model 255 solid state oscilloscope.
It worked ok but I couldnt trust the readings from it or even the voltages it displayed. I could get basic wave forms displayed and thats all I really needed it for. As time went on it started acting up. Certain setings would not display, simple sqaure waves had major overshoot …… I could go on with so many of the issues that started to appear. So today I sat down and did the calibration from the manual. What a pain.
total time spent on it was about an hour and I did the best I could.
I still need need to buy 2x LM733 and a 741 or a better drop in replacement, also a few capacitors and transistors. But those will have to wait till I am employed again.
here are a few pics of the internals