Showing posts with label fresh. Show all posts
Showing posts with label fresh. Show all posts

Electronics Aquaponics Demand feeder lever

Probably the most difficult single thing to deal with in making my demand feeder has been working out the lever.

But as usual I called upon chance to solve it for me.

Thanks chance.

For some reason I remembered playing with a switch I bought when I was making the first version of this demand feeder. The switch was one that is a button, and turns on then off again after you lift your finger.

Its sideways click seemed nice to the touch.

The one pictured (centre front) is the same, but is on an old circuit board. I cant find my original version.



Its quite long for a momentary switch.


The interesting thing about these particular, particularly long momentary switches, is they they do their switching thing if you tilt the button to the side rather than just press it. I just tested this one and it works.

They also work if you press it, but its the sideways switchyness that interests me. It should be perfect as the lever the fish hit, because they can hit it from any direction and it should trigger.




Now all I need to do is figure out which brand they are, and if they all work like that. It might be the case that only some of them do this. It might be a manufacturing error rather than a feature.

Perhaps manufacturing error is too harsh.

Perhaps manufacturing  tolerance would be better.

Either way, I might be able to use it.



120 Things in 20 years - As luck might have it, for the next few days, you might find me in electronics stores with a multimeter, trying to find a switch for my electronic, aquaponics demand feeder lever.


Read More..

Fresh Water Monsters

River Monsters with Jeremy Wade

A friend insisted I sit down and watch a few episodes of River Monsters, one of her favorite shows.

Wow. Seriously fun show.

In the mean time, my little monsters appear to have given up their piscivore habit - no new victims despite the fact I was on travel last night and my delegated fish-feeders forgot. [Late or missed feedings in past have resulted in floating victims...]

Meanwhile the little bugs are gone. I sprayed them off physically with water, then applied an organic pest control for caterpillars and bugs made from common kitchen staples (check out Organic Garden Pest Control).

You know, a reason I have time to watch River Monsters and blog is my fish and garden take practically no time to maintain. Toss some food to the hungry fish, glance around the garden, ooh and aah at how much everything has grown. Thats it.
Read More..

Thinking Fresh produce

Is it just me or is everyone crazy?

Dont answer that, it was a rhetorical question .

I just picked a stack of cherry tomatoes from my aquaponics system. They represent only the second batch that has made it back to the house. All the others were devoured before the back door. But this time, some made it.

Looking at them in my kitchen has me wondering why we insist on having all our fresh produce being uniform in size, shape, and colour. This is a very "developed world" kind of issue, so if you are more sensible than this where you live, just ignore this post, but in this part of the world, almost everywhere we buy fresh produce only sells perfect looking produce.

I wonder what would happen to prices if they just left out one of the criteria for A grade produce.

For example, size.

The size of a fruit is by far the least relevant thing.

The tomatoes harvested were all ripe, all delicious, and all different sizes.

So why would the four on the right be classed as second grade.

Its because...







We are all crazy.




120 Things in 20 years - Where thinking and forming opinions about everyone regarding fresh produce, is often presented as fact.
Read More..

Epic adventurer Bread Every day fresh loaf for one

One of the things Id like to be able to enjoy on my planned epic River Murray adventure, is fresh bread.

I can make bread due to a previous enjoyed "Thing", but I cant make a small loaf for one on an open fire. Or at least I couldnt until today.

Every couple of years I get to hang out with two of the most interesting people I know, and at some point each time, we try to make bread on a camp fire.

It almost works a bit.

Sometimes.

Almost.

But not quite.

They tend toward atemptedbread made with chocolate, marshmallows, and M&Ms.

I tend toward trying to talk them out of it.

Sadly, and most enjoyably, neither approach seems to work better than the other.

In fact, I think the only loaf to have worked so far was an M&M/marshmallow concoction that tasted a bit like a bee rolled in flour might.

With this in mind I thought I should try a stack of different approaches to try to make a functional camp loaf for one.

I think I succeeded, and found a half decent way to make a reliable mini-loaf that can be easily made over an open fire.

I started with some salt.

Salt is really, really important. You really cant make bread without it. If you try, what you get is glue.

Im making a small loaf so Im using a small amount of salt.

Exactly one small amount.




I also added a small amount of sugar. Perhaps a 1/4 of a teaspoon.

I add some flour.

Around a third of a cup.

Next time I do this I will try a half a cup, because the loaf didnt quite fill my container.








And some water.

Also around a third of a cup.











And this much dry yeast.













I mixed it with the spoon handle in a way that I thought looked a bit like an automatic bread maker doing its thing.

Basically I gripped the spoon in my fist, and forced the dough around a small bowl in a circular manner until it seemed a bit like dough.







I went with a very wet dough that I would only mix with a stick (in this case a spoon handle) rather than needing to knead. Kneading is way too tricky in a world without kitchen benches, and everything made in a camp kitchen, needs to be made in a single bowl to be practical.

Stir it like crazy, and it will work a treat.

I covered it with some plastic wrap, and waited until it doubled in size.

"Doubled in size" is a thing you hear a lot when youre learning to make bread.









Its a very difficult thing to gauge. In my experence  most people (me included) tend to wait far too long, and end up having their loaf rise way too much. The best way to get the hang of this doubling business, is to leave the dough to rise in a tall thin container. Perhaps something like a spaghetti jar, or a measuring jug.  In a tall thin container, the only way for the dough to go is up, and as a result, its very easy to see when a loaf has doubled in size.

Trying to determine when a loaf has doubled in size in a normal bowl is very hit and miss.

I quite like hit and miss, but if you want a good loaf, use a tall thin container to check the loaf has risen to double its volume before you move to the next step.

Anyway...

After the correct amount of wait, the dough has risen what looks like only a tiny bit.

This tiny bit is really double its original volume.

A cup 1cm wider than a different cup has a MUCH greater volume.

Doubled in volume looks like "a bit wider, and a bit taller"

If you can notice the dough is bigger, its probably doubled.

Next, I rubbed butter all over the surfaces that the dough would come in contact with.

This cooking ... thing is something thats been in my family since I was a toddler.

I dont know what its called, but Im guessing the world knows it as a "waffle iron" or something like that.





Its normal use is to cook stuff between two slices of bread, buttered on the outside to stop sticking and burning.  Fillings include stuff with cheese, cheese, and more cheese.

I added the once risen dough, and searched around for a warm spot to set it for its final rise.












The best spot is always a place that is wasting heat. In my home thats the wireless router.

Its always just lurking there bleeding heat out into the universe.

There always seem to be a lot of wires in the proximity of wireless things. And there always seems to be a lot of wasted heat as well.

Useful heat.



Bread rising heat.

It looked like this when it had doubled in volume again.

Most of the visual doubling is due to my moving the camera closer, but really, this has risen a lot.

Although Its possible I got the photos around the wrong way.

Just remember that doubling in volume doesnt look like much has happened.



If it looks like a lot has happened, its probably too much.

So now its time to cook the thing.

It looked like this after a few minutes.












And this after a few more.













It sounded hollow when it was tapped, so I figured it was probably cooked.

It looked like this when it was cut in half, and it tasted just like bread.

A totally successful method of creating a mini loaf for one on an open fire.

The openness of my un-open fire is obviously something Ill need to deal with, but with a bit of practice, this system will definitely work in the real world on a real open fire.




Im calling this a total success, and over the next few months, Ill be perfecting this method to the point where I can rely on my ability to make a perfect(ish) fresh mini-loaf of bread every day with only minimal effort.

Next time we make camp bread, we might actually get to eat some.

Perhaps now, the haunting, ethereal voice I heard at the last camp, wafting over the bread/chocolate/marshmallow smoke filled site, and endlessly in my nightmares, ...

"Dont pay attention to [Bullwinkle]"
"He knows nothing"
"He doesnt care"

Can finally be put to rest.

The next time I share a camp-site with these young bakers will see real M&M, marshmallow, and chocolate bread, baked in the waffle irons they forced their parents to buy.

It will be a truly great day for bee flavoured bread.




120 Things in 20 years - Reinventing ancient technology again and again in spite







Read More..

Making smoked foods Tin can smoker Cold smoke

I thought Id try to get the food to a place where I had a little more control over the temperature. In my first experiment with my tin can smoker, the device was inside the BBQ, and contributed quite a bit of heat. I suspect the BBQ was at around 50c, which is perfect if you want to breed bacteria.

Id prefer not to.

I figured I might be able to create smoke by just dry frying some wood chips, and I think it shows some promise.


I put the can on the wok burner and ran it on high for a bit before adding some hickory wood chips.

In this photo I used a flash so as to not distort how much smoker there was. Its a dull day, and if I took it without the flash, I would have captured half a second of smoke instead of 250th of a second or whatever flashes really run at. [Which is why you cant see much of the flame]

Probably much much faster.


Anyway...

It worked a treat.

A total successful test, and only took about 5 minutes to start smoking, and be ready to use. It might even be possible to just move it inside the BBQ now that its going, and the BBQ heat night keep it going.

That might mean it will be useful as a cold smoke maker, and a hot smoke maker.

I guess I should write some stuff on what smoking is all about instead of jumping right in with a smoker. Sometimes I forget Im supposed to be writing about this stuff, and just get on with the learning.




120 Things in 20 years Making cold smoke in a tin can smoker on a wok burner may just be the 2nd success in a row. Im not sure thats ever happened before.
Read More..

Heliostat Whats a heliostat


I want to start building a heliostat, with the eventual goal of making a solar tracker, but for now, I really want to just build something that will send light through my window.

Why? You may well ask.

And "Whats a heliostat?" you may add.

A heliostat is the kind of thing someone with a water drop lensed microscope might have used to get some light on the subject*. Early models involved humans, who were forced to point shiny things in such a way as to reflect the light to shiny mens laboratories. Later versions incorporate wind up mechanisms. For a single day device, all thats required is that it turns 15 degrees every hour, as long as you are willing to manually adjust the elevation for the particular day you are using the device,
a heliostat will track the sun so that a mirror will always reflect to the place I want the light.

The solar tracker is like a heliostat, except that the place its pointing at is always moving. (that point being directly at the sun wherever it is. But the solar tracker is for another day. Actually all of this is for a great many days.

For now, Ill be working on a small digital device that controls the direction a small mirror is pointing, to make it always reflect light to a fixed point. Basically a way to bring some natural light through a window that doesnt see a lot of light.

There seems to be a few different ways to create some linear movement. Linear movement being required to lift a side of the mirror to adjust the direction of the reflection in the up and down aspect.. I figure if I can raise or lower one side, and make the entire device pivot around a mast, I should have all the degrees of movement required.

According to the invention engine, one way to create the required angle might be to glue a hinge to a mirror, and mount that to a mast to support it. Tie a string to one side of the mirror, then wrap it around a tiny winch mounted half way up the mast, then tie the other end to the other side of the mirror. That would give me up and down, and then all I need is a way to rotate the entire device, perhaps using a geared motor, and a pulley.

I havent really tackled this bit of the design, but the control of the motors could be done via a PICAXE chip similar to that used in my demand feeder. and some light dependant resistors (LDRs).

If two LDRs were arranged so that when the device was pointing correctly, they were both in full light, but when one became shaded, the motor could be turned in the correct direction to make the adjustment.

A similar arrangement could be made for both the up and down, and rotational movements.

Im off to an electronics store to buy some stuff.



*may not reflect reality.


120 Things in 20 years is busy finding bits of heliostat. 





Read More..