Ice machine

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Ice machine

Postby reformy » Mon Aug 25, 2008 2:44 pm

Hi all
Of course, I still have to do all the hard work, but the NXT mixes the ice cream for me while in the freezer. I can control the speed of the robot from the brick and see the actual speed on it.

Last try was vanilla and orio's cookies! came out not bad at all.
The real problem here is that the price of the batteries isn't worth the ice cream it makes...

movie:
http://www.youtube.com/watch?v=MtWUXsaR5a8
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Postby lawrie » Mon Sep 01, 2008 2:08 pm

If you invest in a Lego Mindstorms rechargeable battery pack, you will get cheaper ice-cream.
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Postby bbagnall » Mon Sep 01, 2008 3:51 pm

Does this project make use of a LEGO temperature sensor? You should give some directions for making the ice cream, like what the ingredients are and when you add things like Oreo Cookies. I'd like to give this one a try.
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Postby reformy » Sat Sep 06, 2008 2:45 pm

sorry for the late response.
here is the recipe i found on the net, i used half the amount for the first try. BTW, i m translating it from Hebrew so i don't know all the correct names:
2 glasses of milk
1 vanilla pod (i used vanilla essence)
6 yolks
2/3 glass of sugar
1 sweet cream container

1. biol the milk with the pod in a pot (i did it without the pod). remove from the fire and put aside for 10 minutes.
2. take the pod, open it through the middle with a knife and remove the black grains with the knife. put them in the pot (i didn't do that... i put the essence instead).
3. put the milk back to boil. in a little bowl, scramble (is that the word?) the yolks with the sugar until u get a uniform mix (not more).
4. pure a little bit of the boiled milk, slowly and while mixing, so that the yolks won't be cooked by the heat, just get warmer.
5. put the mix into the pot.
6. cook on very low fire, while mixing, until it thickens a bit.
7. remove from the fire and add the cold cream. mix well and cool.
8. put the blend in the "machine" and freeze.

before stage 8 i broke little little pieces of Orio's into it.

there were 2 problems with ice cream i did:
- the taste was good, but the texture wasn't so. a good ice cream should be with a large percentage of air in it, something like 40%. my machine wasn't so good with that, so i got a much harder ice cream. I think i'll change the machine on my next try and make the spin vertically instead of horizontally, so it will insert air into it.
- the Orio's was crashed even more by the spinning arm, but that's not such an issue.

that's it. good luck!
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Postby jamiescot » Wed Jan 06, 2010 1:55 pm

Do you really need battery for that great ice cream maker of yours? I wish you could just connect it to the electricity so that it will not be that costly. Anyway, I hope a rechargeable battery can solve your problem. Here is a must try healthier recipe: banana, yogurt ice cream. Manitowoc Ice Machine
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