Category: Side Projects

12v circuit for battery backup

My goal is to eventually run everything off a battery backup circuit. Most common systems run on a 12v battery. To start im start off with a few basic things and getting everything running from 12v.

Items needed:

  • 12v power supply
  • 12v to 5v dc to dc step down.

This controller came with a few negatives right off the jump. I dont want to link to a bad controller but ill still describe what I did.

Continue reading . . .

Backup home internet

With new most asus routers you can use a feature called dual wan. I have the luxury of having a work provided cell phone I am using for this. Before having that I had a free service called freedompop.

Use cases (mainly mine):

  • Watching netflix withouth interuptions.
  • Backup internet for home security system.
  • Anything internet…

To start off we plugin a cell phone to the routers usb port.

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3d printed wrist brace – WIP instructions

I won’t be able to finish my wrist brace project for a while. These instructions are very rough because they’re not actually finished. 

Post in comments if anything needs clarification.

Scanning

requirements:

  • Windows
  • Kinect (with power adapter)
  • beefy CPU or an NVidia GPU (with CUDA drivers)
  • Kinect for Windows SDK 2.0
  • Skanect software
  • an assistant
  • a small open area

Here’s the Skanect guide I watched:

https://www.youtube.com/watch?v=_cKb3oEM47E

Continue reading . . .

Reusing Tile as car tracker.

Ever since I switched to Samsung smart things I purchased presence sensors and had no more use for my tiles after the batteries died. I retired them to a box for a long time. Today I figured out a neat project for the tile. I am going to turn it into a tracker for my cars. This is not real time tracking but can help find your car in larger cities.

Supplies/Tools needed:

Continue reading . . .

3d Printer Filament box done quick

Keep your filament dry! Filament used for 3d printers will absorb moisture from the air and damp filament prints very poorly. With Buffalo’s high humidity and our printer being run in a basement, we absolutely need a dry box for our spools. We ordered parts ahead of time, slammed this box together in an afternoon, and then baked our spools to rid them of moisture.

We’re using a large plastic bin for storage, teflon tubing to run from the box to the printer, and pneumatic connectors to ensure the filament feeds smoothly into the tubing without snagging. A large pack of silica gel keeps the box dry over time. Our basement also has an additional air dehumidifier that we keep at 50% to prevent mold growing on our wood/mdf surfaces.

Supplies:

  • Sterilite Air Tight Bin, fits about 8-10 reels. (Amazon)
  • 5-10 Meters of PTFE Teflon Tube OD 4mm ID 2mm (Amazon)
  • M5 Lock Nuts, 1 per reel (Amazon)
  • 5mm Male Thread 4mm Push in Joint Pneumatic Connector, 2x per reel (Amazon)
  • Scrap Wood Strip
  • 608ZZ Bearings, 4x per reel (Amazon)
  • DRY&DRY Silica Gel Desiccant Packet, Rechargeable (Amazon)

Tools:

  • Power Drill
  • 5mm or 3/16″ Drill Bit
  • 1/4″ Drill bit or larger
  • Sander/Sandpaper (optional)
  • Rubber Mallet, Optional but makes it easier to fit bearings
  • Oven

3D Prints

 

Continue reading . . .

433MHZ More Things for Smart Things

Finally – off the breadboard and into a working environment. It’s currently working for 433mhz sensors, I will possibly be adding more frequencies later. For now I will continue refining the code to release it on github.

 

Day 1:

A few issues. I accidentally flipped the polarities on the siren. I will eventually implement a 12v regulator to up the voltage for the siren for the full 120db power.

 

Day 2:

My cat set off one of the motion sensors at 6AM, activating the siren. I need to adjust the sensitivity or get pet-friendly motion sensors.