Category: Side Projects

Wall mounted Google home free

I wanted to wall mount my google home mini for the kitchen since there is not really a nice place to set it down. I also didnt want to pay for a mount or 3d print anything.

You can use zip ties or bread bag ties to secure the cable in a loop like below.

After u have the 3 ties in place. Just plug it in and you should be set.

If you want a more secure grip for free you can use two methods. Assuming u have common household materials.

  1. Small amount of hot glue where the usb cable is. On the sorrounding, just enought so that you can pull it off if you decide to move it.
  2. Use double sided 3M tape behind the mini to secure it to the wall.

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.

After a couple of minutes fiddling with it. I realized the variable resister was bad. I traced the wires and its only being used as a signal voltage not for power source. It was safe for me to use a basic resister in place. 4 tries later i found one in my bin.

5.05v is what this resister brought me to. Perfect replacement, time to solder it on.

Now lets get it mounted inside my power supply.

Finally lets plug in my 5v device. Smartthings hub.

After mounting this and plugging it in. It reduced the power usage by about 250ma. I was also able to add other devices to the circuit after noticing the smart things hub did not use the power specified on the original adapter.

Other devices were easy. Everything was running on 12v already so it was a matter of cabling it all together.

After I had the cables hooked up. I added connectors on the other ends to the devices.

With most of my devices but servers switched over I can begin work on a battery backup system. I will be detailing that in a future blog post.

Infinite, Free?, Small storage for electronics

Im a little dissapointed in myself for not thinking of it sooner. I tossed about 20 of these in the recycling bin before I realized I could reuse them myself.

Title is a little deceptive yes, but I still consider them free when you have a source. Baby formula containers!

When You can get yourself a source… well you have a source! They will feel endless and will just keep on comming. I have racked up quite a decent amount of them. I am able to use them for part storage, office supplies like rubber bands, resistors seperated in ziplocks and much much more.

To get started you first peel off the paper label.

Clean out the inside with a paper towel. Dont use water since these are made with cardboard.

Apply a label or sharpie, then stack them away.

You are probably wondering were to get these. Reach out to a pregnant friend or couple i’m sure they will bag them for you. The other method is do what I did…. Have a baby… jk haha. My wifes pregnancy was completly unrelated to this.

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.

Continue reading . . .

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.