Monthly Archives: December 2007

Reverse Osmosis Filtration for the Refrigerator

Chesapeake, Virginia doesn’t have the best water.  I had bought a brand new Samsung refrigerator and couldn’t even use the water dispenser because I didn’t want to drink the nasty water (even though the refrigerator had a filter).

So, in July (with my father’s help) we decided to get a Reverse Osmosis system and try to hook it to the refrigerator.  It was actually quite simple.  The refrigerator actually sits adjoining the garage wall.  I installed the reverse osmosis system in the garage behind the refrigerator.

I went to Lowe’s and purchased a Whirlpool High Capacity Reverse Osmosis System Water Filter.  The whole project cost me under $250 and now I have ultra pure water!  The filters need changing about every 6 months or so.  This has been a lot better than paying for bottled water.

If you wish to do this install, you will notice that the system comes with a sink faucet.  It gets a bit confusing since there is 3 hoses that go to that faucet.  The hose that goes to your refrigerator is blue.  There is a drain hose that comes out of the Reverse Osmosis Assembly that should just go to any drain.  Since I put this unit near our water softener (also installed easily by myself), I used it’s drain line also.  I have the drain line go into a one of those condensation pumps used on air conditoners.

Here is a diagram that very closely shows what I did:

 

Update: The drain line from the RO was changed so it didn’t have pressure.  I have it emptying into a tub that has a automatic sump pump.  That pumps the bad water away when it fills.  Works great.

My 6502 CPU Breadboard Project

When I was 13 (around 1989) I had an idea that involved making a Commodore 64 like machine to a server that people could play games on.  I was addicted to a service called Quantum Link (The parent service to AOL) and I wanted friends of mine to experience the same thing on a cheap simple Atari like machine.  This would allow people to play games together through a modem to a server farm that controlled the games.  As all 13-year old children do, I lost interest in the project and went on to what most teenagers do.

Here is a picture of the prototype I built back then.  Some of the parts were messed with, such as a missing sound and video chip.  They were removed for me to show others how to make simple computers.  But, this computer was the equivalant of a Commodore.  It used a 6502 (Commodore had a 6510 that included a few IO ports).  It also had 2 6522 VIA Interfaces that allowed it to talk to things like joysticks and keyboards.  It had 32K of Static Ram and 16K of ROM.  The other 16K was used for the interface chips such as sound, video, etc.

The project taught me quite a bit about how computers work and what not to bring up on a date.

Here are some of the pictures I took before tearing down the board today.  The breadboard is still good and it’s about time I used it for a new project.

 

As a side note, special thanks to my father for buying all the parts and computer junk to help me learn these things.  He spent a lot of time and money helping me with these projects.