Automatic Hot Chocolate Machine

Imp Inventor · 2026-04-17T13:01:29Z

I have begun work on an automatic hot chocolate maker for an engineering competition, which must be completed in about a month. *Runs around screaming as he realizes how little time this is for prototyping* If all goes well, by the end of that time, I'll have a machine that can make you a cup of hot chocolate at the push of a button, or, if things go really well, at a signal from your phone. I'll also add a feature to play smooth jazz while it makes the chocolate if I have time. Essentially, I'll have an electric kettle to heat your chosen liquid--water, milk--and a temperature sensor to make sure the liquid doesn't get to boiling point, to keep from scalding it (it'll trigger the off switch). Once it's heated, a food grade heat resistant pump will draw the liquid from the kettle, down a tube, and out into the cup in the tray. The hopper above the cup will then dispense hot chocolate mix (look, I didn't have time to design something that would make a serving with ingredients from scratch) into the cup below, and then move to the side on a geared rack to allow a motorized whisk to mix it up. You can't see the whisk in the blueprints below because I forgot to design it in, and as such forgot to order parts for it. A minor oversight that can easily be fixed *more screaming*. This is all going to be powered by Arduino Uno R4, which is my first foray into Arduino territory. Here is the model, designed in Blender. I'll post regular updates once my parts have shipped and I begin construction.

Page 2 / 2 Prev

Build logs

Last Post by marcdraco 2 weeks ago

31 Posts

3 Users

11 Reactions

744 Views

marcdraco

(@marcdraco)

Posts: 1072

Moderator at Large and Cat's Butler

It's honestly very odd, I've got to see if I'm getting moderator notes or the automod just flags them... Maybe that's it? The backend software has been updated a couple of times. I don't get a notification but I see changes - usually subtle ones.

Take everything I say with a pinch of salt, I might be wrong and it's a very *expensive* way to learn!

Posted : 24/06/2026 3:09 pm

Page 2 / 2 Prev

15 Forums
416 Topics
3,728 Posts
39 Online
2,594 Members

Forum Icons: Forum contains no unread posts Forum contains unread posts

Topic Icons: Not Replied Replied Active Hot Sticky Unapproved Solved Private Closed