Tuesday, September 28, 2010

Stand Off

 

This took me one long weekend to complete. I used a digital camera that shot HD stills and used the HD video plug-ins for Windows Movie Maker. 

The filming and editing process for this video was fairly easy but I ran into a lot of problems making the first-person binocular view scene. I had used a green screen for the black binocular scope and filmed the video in full zoom. This worked great in theory but I had trouble formating the videos to work properly. The video only filmed in 640, but the pictures were in 1920 (or something like that). So I had to try to format them to the same size. I spent hours trying to do this but each time the video was corrupted or couldn't convert. I assume it was because of the codecs, which hadn't dawned on me until just now (idiot). Eventually, I just reformatted the black green screen image and used that over the 640 film, which is why in that scene the binocular view looks really small.

Anyway, I hope you enjoyed the little short.

Square Wave Oscillator


This is a square wave oscillator (digital, like 8-bit music). It's based around the LM386 amplifier I.C., which is what the mini guitar amplifier was based on. It has a simple power switch connected to the battery, a potentiometer for adjusting the tone, and a normally closed momentary switch. The momentary switch is connected to the signal output. It's normally closed so when you press it, the signal is cut off but when you release it, the signal passes through again to your amplifier. This can create some cool sounds.

I have the schematic embedded below. Feel free to download it here. There is detailed instructable I wrote here on how exactly to build the circuit.

LM386 Oscillator Schem1

This is a diagram showing the components wired to the I.C. The red x's indicate places where the wires don't connect and the black dots indicate connections. Feel free to download the image here.

LM386 Oscillator Schem2

This second video contains another square wave oscillator but with keys to jump to different tones and a potentiometer to adjust the overall tone. The keys are actually normally closed momentary switches. A resistor is connected to each switch so when it is pressed, it generates a tone. It's hard to explain here so I'll try to explain it later or in a video.

Creative Commons License
Square Wave with Keys by Justin Bread is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.


Both images embedded on this post are Attribution-NonCommercial Creative Commons licensed.

Unpublished Material


A short collection of stop-motion projects which were never published. These projects were eventually abandoned for whatever reason. The date they were created ranges from 2004 to 2009.

iPod Battery Replacement



I had purchased a 60 GB iPod at a yard sale. It wouldn't turn on and it wouldn't hold a charge when it was connected to a USB port. With a firewire cable, it would charge but only run for 30 minutes as opposed to 8 hours. So I bought a battery for it online. This was a short clip showing how to replace the battery.

The iPod also had a couple other problems. The click wheel wouldn't work, so I had to replace that as well. After that, it worked great but I hated the iPod interface. After a couple days, I put Rockbox on their.

Rockbox was great. There were tons of features added to the iPod. You can record audio, run tons of audio formats, even a few video formats and lots of games.

Eventually, the five year old hard drive burned out so I shelved the iPod. I could buy a new harddrive but they're about $90 bucks so I'll wait awhile.