When the button is pressed, the fan sucks all the air out and creates a nice fit for the bag inside the can.
My initial prototype was built with spare parts I had laying around and cost $0 to make, but I wanted to get a little "fancy" and added a switch.
Time to Build:
Approximately 1 hour if you have all the parts and tools ready to go.
Parts List / Cost:
1/2 inch pipe strap..........$0.20
Total Cost: $42.20
Attention: As with anything, SAFETY FIRST. Use caution when doing this project. Always use the safest practices / guidelines when doing anything related to this instructable.
Step 1: Parts
Here I use a 12 volt / 3 amp fan and adapter so there should be no issues.
The hardware and wire I already had laying around but I recommend using a wire gauge (thickness) that is slightly larger than that on the fan. Smaller wires may not be able to support the load current and could potentially get hot. Bigger is the cooler (temp) and safer option.
Step 2: Marking It Out
It's a little tricky to mark the inside of the trash can but I didn't want to leave markings on the outside.
Step 3: Jar Lid
Step 4: Cut It Out!!
Again, cut small and work your way out.
Place the fan over the hole to make minor adjustments.
Leave a little bit of a lip to provide a proper seal over the fan.
Step 5: Fan Mounts
Drill the first hole and place a nail in it to keep that position fixed in place.
Drill the remaining 3 holes the same way, always inserting a nail afterwards to hold things still.
Mount the fan on the inside with the airflow directed out of the can. The airflow direction is indicated by an arrow on the side of the fan.
Step 6: Switch Install
Tie a knot in the wire and add on a rubber boot.
(I don't know where I got the boot from. It was in my box of assorted screws and parts. It just happened to work perfectly with this project. I'm thinking it came off a TV coax cable...?)
Step 7: Mounting the Switch
A smaller 3rd hole is then drilled just below allowing for the wire to poke inside the trashcan.
2 bolts were then used to fasten the switch in place.
This 1/2 inch pipe strap also came from my assorted junk box and provided a nice solution to mounting the switch.
Originally I was going to mount the switch flat on the side but realized the back end of it would poke into the bag.
Step 8: Cutoff Extras
Step 9: Wiring It Up
With black as negative and red as positive, screw in the black wire from the fan to the negative post of the power input.
The positive wire from the fan should then be connected to the red wire leading to the switch..
The black wire coming from the switch should then be connected to the positive post of the power input.
In the photos above I created a wiring schematic of how I connected everything.
Note: My fan had a third (blue) wire which is not needed. I clamped on an insulated cover to keep it out of the way.
Step 10: Tape It Down
Step 11: Plug It In, Plug It In!
If you followed all these steps correctly you should have no troubles.
If you don't have a good enough seal around your fan you can use a silicon caulking to close up any gaps and improve the performance.
Overall this was a fun, simple project that has impressed all my family and friends. My daughter won't even let me replace the trash bag without letting her push the button. And though my wife objects to all of my projects, I've noticed she doesn't ask me to take out the trash nearly as much as she used to!!
If you enjoyed this project please vote for me in the competition!