Thursday, October 19, 2017

Next Generation Batteries

Awhile back, I was introduced to the work of Robert Murray Smith and his YouTube channel.

I was searching for a way to make a conductive ink for my solar cells.

Along the way, my mad scientist Facebook group members also mentioned the guys work and apparently guys in my mad scientist group know him.

As far as subject matter and presentation, he really explains this graphene thing quite well.

I have included a couple links down below so you can see the video from a couple hours ago.

In it he demonstrates making a battery with ordinary materials.  Paper, scissors, paint brush, carbon powder, glue, etc.

Tuesday, October 17, 2017

Free Graphene

I have a batch of my latest graphene available for free.

It is pre-doped with sodium carbonate electrolyte to use in making super-capacitors or graphene batteries. It is from one of my projects and I made a lot of it.
Just pay the shipping from the tropical island and I will toss 20 grams of graphene in DHL.

You can go to DHL and get the rate for yourself with the following info

Origin is Antipolo City, Rizal Province, Philippines  Postal code 1870

Container size is 10x10x10cm and 100 grams.

It is so light weight this will get you the minimum charge price for volumetric pricing.

Limited to the first 200 grams and before November 1, 2017



message me on facebook https://www.facebook.com/bt.metz  or thru the message box on the side of the page

Monday, October 16, 2017

Twenty Dollar Wind Generator

Over here on the tropical island there are these cheap small ceiling fans for sale.  usually they are between 7 to 15 watts and sell around $4 or $5 max.

I saw recently a guy who converted one to a wind generator on my Sunday experimentation day.
3
I usually take every Sunday and block it out as my day each week to work on something interesting, study something or conduct some experiments.

So when the wife went to work, I tagged along, and hit up the local equivalent of the 99 cent store.

I picked up a 10 watt and 15 watt model, along with a 3 watt AC LED trouble light, like the type mechanics use.

Total with transport I spend less than 10 bucks.

dont mind the dirty floor, its fiberglass epoxy from my micarta projects
I eagerly took it home and proceeded to make one based on the youtube video.

Sadly I do not have enough wind to make it work well as is.  I need a bigger wind prop.

I investigated the vertical design, but I found that it will be too expensive to 3D print the airfoils.  I had my son the aeronautical engineer in training draw them up for me. Sadly thought the 3D printed airfoils were going to be too expensive and take days to print.

So I went back to the drawing board and came up with using just regular plywood laser cut for the props and some 3D printed adapters.  This is much cheaper to make and simpler design.


I also experimented with ways to convert the power to something usable.  The output of the generator when spun by hand is between 60 and 300 volts depending on wind speed and load.

The ceiling fan will generate electricity as is without any mods to the motor iteslf aside from sealing it inside with clear acrylic paint against the weather.


The wood props I will just heavily coat in varnish and the cheap plastic parts I will spray paint white to protect from UV degradation.

I am not sure about the bearing life as of now.  It may need disassembly and a sealed bearing added in the future.

So to convert the power, I have come up with using a basic 12v power adapter.  I have found that the voltage regulator of these cheap 100--240v AC to 12v DC adapters work just fine even down to 40 volts AC input.

They are a $12 item for 6 amps and around $5 for 2 amp like a CCTV adapter.




Next stage is to design some sort of commutator for the wind generator, laser some wood foils, buy some PVC plumbing parts, get a amperage, voltage, and watt meter along with a light to serve as a load.

I am a bit short on cash right now to get it done this week, but if you want to help out,. I can finish it all with proper documentation for about $100 dollars if you want to help out.

I had a windy mountainous area for testing and a guy ready to monitor it for a couple weeks.

I will take donations...


UPDATE

Phil asked for paypal..

Here is my address

ezinjectionmold  (at) gmail dot com.  (You know how to write it properly I just dont need the bots sending me spam)





Sunday, October 15, 2017

Back from Drone Flying

The 3D printer project took a back seat for last week.  I got it mostly assembled and ready for testing.  However I did find some issues with the brass bushings that will needs osme big parts re-printed and made again.

My 3D printer performance has deteriorated lately so I did a rebuild of some parts and got it back to new.  It seems that the print heads need to be just thrown away after every 5-10 kilos to keep it running in top performance.

It can be repaired but it turns into a ton of work and I really dont save money vs popping in another $6 print head.  However today I did not have a full replacemnt set of parts so I had to build something from parts, and mod some old parts.  5 hours work.

Last weeks drone flying trip was a adventure.

We flew a drone in Subic, and around the area.  A surfing town, in a volcano, at a lake, and deep in a canyon in front of a waterfall.



This location was probably the hardest hike I have ever undertaken, even in the Marine Corps.

We descended over 1000 vertical feet via a greasy muddy trail.  In many areas there were bamboo poles as hand holds and they were all rotten.

As I had lost one shoe the day before on a previous jungle hike, I did this one barefoot.  I only encountered thorns once the whole hike.  However I am still cleaning the mud out of my feet.

We also did a trip to a underground river.  We took a boat thru it, and it was filled with millions of bats.

Both locations are completely not tourist friendly nor developed.  Did not see a single bit of garbage on the ground anywhere.

Back in the shop today.  I also am modding the wind generator.  I had a inspiration based on something I saw on the trip.  I was trying to come up with a way to make larger vanes and increase its ability to catch small breezes.

I came up with the idea of 3D printing an adapter for the hub and bolting some laser cut 5mm thick plywood to it.  I will seal it with varnish to weather protect it.

Other than that, just really sore still 4 days later after the hike.  I stopped taking advil yesterday.

Hopefully tomorrow I will be better.