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1
Everything else / Spinny Flowers
« Last post by Impala on Today at 06:24:33 PM »
I wanted to make a gift for a friend who's into gardening. So I took a few pieces of scrap wood and cut out flower shapes. Then threw some bright colors on them. Then a couple coats of clear coat. The flowers sit on zinc coated steel rods, which are stuck into the garden's dirt around 10" deep. The result is a standing flower that can spin in the breeze. Plus they add a bit of additional color to the garden all year long.

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Yes I learned that spray paint does not like foam board. But it didn't hurt the flowers paint or clear coat.

2
General Discussion / Re: Blockchains, Ethereum, and a Safer SkyNet
« Last post by mogul on June 23, 2017, 01:53:15 AM »
I have been studying Ethereum and Blockchain technology for a few hours a day lately, mostly through Youtube videos.

Good read. Do you have a collection of links you would recommend for a deeper study?
3
Everything else / Re: Automobile drag coefficient
« Last post by Impala on June 23, 2017, 01:18:46 AM »
Bump to add a link. There's good info on this link with pictures!

http://www.recumbents.com/car_aerodynamics/
4
General Discussion / Blockchains, Ethereum, and a Safer SkyNet
« Last post by mtriplett on June 22, 2017, 11:47:08 AM »
I have been studying Ethereum and Blockchain technology for a few hours a day lately, mostly through Youtube videos.

This story started 8 yrs ago, with Satoshi Nakamoto...Who are you?

8 yrs ago, Satoshi unleashed modern crypto-currency concepts and code on the world.  These relied on something called "The BlockChain".  I don't have time to explain it here, think of it as the world's best record keeping system to date.  Look it up on Wiki if not familiar, because the rest of this post will not make any sense unless you understand the basics.

fast forward to today...

Enter Ethereum:  The World's First Global Singleton Computer

The founder said "Ethereum is the world's first global singleton computer".  This statement has huge consequences.  They basically took the technology behind BitCoin and re-engineered it from the ground up to be generic and be able to store a safe immutable secure unhackable distributed and ACID (for DB people) copy of anything.  A lot of people, myself included, think it will disrupt entire industries in the coming years, and think it is one of the most significant innovations in our lifetimes.

Ethereum can run immutable code, often called smart contracts.  Thousands of "Miners" run servers all over the world that store copies of the "ledger" (think memories) and are compensated for doing so by small bits of "Ether" - the currency.  In this scheme, no central authority (Google, FB, Amazon, Apple, Microsoft, Gov't) owns or controls the data, or knows who it came from.  Everyone has their own private keys for their own data.  As this tech gets adopted, we all get a lot of our privacy back.  Some empires crumble in the process.

Enter a Friendlier SkyNet  ...Ava?

Because Ethereum contains a complete programming language, it could be used to build a Global, Distributed, Private, Secure, Democratized AI that would run on a blockchain that no one would control...holding all the worlds public and private AI memories (knowledge).  This would solve the privacy and security issues as all memories are cryptographically secured in the blockchain...it is infinitely better than centalized systems with logins.  I like this for many reasons, but knowing our robots aren't acting as corporate spies in our houses is a big deal.

Performance and Caching with Local AI Memory Server:  In my opinion (for performance), no matter how much they optimize the tech, each household would need one local box that would house a copy of all the frequently needed public and private memories.   This box would act as a peer-to-peer data server and blockchain client for whatever devices/robots its owner had.

Transaction Cost and Economics for Miners: The processing cost of this AI system would need to get down to less than a buck or two a day per household in my opinion.  Because each transaction (memory) has a small fee and AIs need millions of transactions, adjustments might need to made to the incentives to work for consumers and miners.  The economics have to work for all parties.
5
Everything else / Re: Automobile drag coefficient
« Last post by Impala on June 21, 2017, 09:45:12 PM »
In reply to my above post. I achieved 75% over the EPA rating for my vehicle's MPG by doing aerodynamic mods. The specifics will vary depending on your vehicle, so it does little to share the exact details of my build. But the point for you the reader to take away from this is: These mods do work when you do A.B.A. testing on your vehicle to prove their gains or failures. I only accepted any aero mod change as a MPG gain when it showed positive results over numerous tanks of gas. (minimum 10 tanks) After a years worth of trial and error the results speak for themselves. The total cost in parts was $400 USD for a 75% gain in fuel economy. Hours spent = too many to count!

Modifications done:

LRR tires
light weight steel rims
chin spoiler
ground effects
front and rear spats
bumper filler panels
Items in bold were made from lawn edging plastic.
roof rack removal
moon hub caps
reusable air filter drawing warm air from the engine compartment
synthetic oils
reprogrammed computer
6
Links / Re: Arduino fork
« Last post by ossipee on June 20, 2017, 03:20:37 PM »
7
Links / Re: Arduino fork
« Last post by mogul on June 20, 2017, 02:28:32 PM »
good read, thanks for the link
8
Links / Arduino fork
« Last post by ossipee on June 20, 2017, 01:35:33 PM »
It seems arduino is trying to get it's act together

http://hackaday.com/2017/06/19/the-arduino-foundation-whats-up/
9
Everything else / Re: ghetto compressor revisited
« Last post by 1 what on June 19, 2017, 04:07:09 AM »
Ahhhh Mogul - you make me nostalgic for the "old days" when I spent about half my life "improving" on cheap gear. I have to admit that overall I had little success and the usual story was that as soon as I improved some part some other part would fail secondary to the changed operating parameters I'd caused with my first improvement. I guess thats the genius of successful crap gear design.... every part of it is made to the same dismal standard.  :(
I also wish to nominate your cola-bottle pressure vessel system for the Robot Rebels Innovation of The Year Award.
Thanks for posting something thats not a 3D printer.
10
3D Models / Re: Don Quixote Re-loaded
« Last post by Gareth on June 18, 2017, 07:10:39 AM »
It may take a while, however it is progressing.
just uploaded V.10 of the arm and hand.


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Spinny Flowers by Impala
[Today at 06:24:33 PM]


Blockchains, Ethereum, and a Safer SkyNet by mogul
[June 23, 2017, 01:53:15 AM]


Automobile drag coefficient by Impala
[June 23, 2017, 01:18:46 AM]


Arduino fork by ossipee
[June 20, 2017, 03:20:37 PM]


ghetto compressor revisited by 1 what
[June 19, 2017, 04:07:09 AM]


Don Quixote Re-loaded by Gareth
[June 18, 2017, 07:10:39 AM]


Spammers by MEgg
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5 min meeting timer by mogul
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Picture Topic by Impala
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* Recent Posts

Spinny Flowers by Impala
[Today at 06:24:33 PM]


Re: Blockchains, Ethereum, and a Safer SkyNet by mogul
[June 23, 2017, 01:53:15 AM]


Re: Automobile drag coefficient by Impala
[June 23, 2017, 01:18:46 AM]


Blockchains, Ethereum, and a Safer SkyNet by mtriplett
[June 22, 2017, 11:47:08 AM]


Re: Automobile drag coefficient by Impala
[June 21, 2017, 09:45:12 PM]


Re: Arduino fork by ossipee
[June 20, 2017, 03:20:37 PM]


Re: Arduino fork by mogul
[June 20, 2017, 02:28:32 PM]


Arduino fork by ossipee
[June 20, 2017, 01:35:33 PM]


Re: ghetto compressor revisited by 1 what
[June 19, 2017, 04:07:09 AM]


Re: Don Quixote Re-loaded by Gareth
[June 18, 2017, 07:10:39 AM]


Re: Spammers by MEgg
[June 16, 2017, 11:11:26 AM]


Re: 5 min meeting timer by mogul
[June 16, 2017, 04:55:08 AM]


Re: 5 min meeting timer by maelh
[June 15, 2017, 11:22:22 PM]


ghetto compressor revisited by mogul
[June 15, 2017, 05:25:17 AM]


Picture Topic by Impala
[June 14, 2017, 05:17:43 PM]