The idea is that oil you used for cooking and now you don't need anymore, can be used for lighting.
Not super bright but it's a very prototype and for emergencies it's enough.


Heat from a candle goes through the Peltier module into the pot. That produces electricity. And because we have just one flame and the voltage is about 0,6 ... we need something called "Joule Thief" to light up an LED with a proper voltage.

You can connect even ten diodes at the same, place them here and there and they will all work (but,best to use switches)...kitchen, wardrobe, pool, bathroom...whatever you want.
No batteries, just one little flame.

....and that's it.

The whole generator is portable and it's not that hard to make. Internet is full of instructions and tutorials for thermoelectric stuff,you should see that before you start doing it. Mine isn't so stable.
So ..what i've used:

Peltier module (they are used in computers and ect.)

solar garden light (in..a gaden shop propably)
aluminium heat sinks
used cooking oil
LEDs (must be white for best results)
aluminium "cup" from a candle
any short cup
toothpaste (or thermal paste)
steel building blocks
hard paper

*These pictures are much darker, like in the first one you can see just
the sink, but really you can see the whole room and orientate in it with no problem. And that's just one diode.

YouTube channel: https://www.youtube.com/user/SteamTek

Step 1: base

Let's start with a base. You should have one for many reasons...heat, handling, rotating...just many reasons.

I've made it from hard paper. (just for test)
This is just an idea, so do with it what you will.<br><br>Use 2 liquid containers, one for your hot side, the other for cold. Sandwich your Peltier module between them. Fill the cold side container with water. Fill the hot side container with hot oil. <br>Use a thermometer to monitor the oil temperature as it is heated over a fire (rocket stove) and remove the oil when it reaches the maximum working temperature of your Peltier module, so as to not damage your module by over heating it.<br><br>At this point, any heat source capable of heating a cup of oil to 300 F or so----rocket stove, parabolic concentrator, Fresnel lense, gas burner---becomes a source of electric power.<br><br>Just a thought.
<p>how much it costs</p>
<p>i made it mostly from junk, but the peltier is quite cheap. sorry i don't remember the exact price, but in your country it would be different anyway (my wild guess - 10 to 20 US dollars)... All things i've used for this project are very common now, so buying online or go to some computer shop (components) is easy. That solar garden light costs here about 50 Czech crowns, that's 2 Us dollars. Kinda small investment when you think of it.</p>

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