Electronics > Projects, Designs, and Technical Stuff
PCB Coasters
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mdszy:
So I've been using reject PCB's as drink coasters, and had an idea: Why not see about making PCB's that are MEANT to be drink coasters?

I've been working on designing one, and so far it looks like this:



I'm not quite sure if I want to make them to sell, or just make them for myself, or create other designs that people might want.

So I've created a survey to gauge people's interest in them. Feel free to take the survey, or leave feedback here! At the end of the survey is a field to leave your email address if you'd like to receive a discount code if I decide to sell these or coasters like them in the future. This is entirely optional.

Survey link here!
German_EE:
I see a small problem here. A bar coaster is normally made of paper or card which a) absorbs spills and b) isn't slippery. How do you deal with this?
mdszy:

--- Quote from: German_EE on June 30, 2019, 05:15:58 pm ---I see a small problem here. A bar coaster is normally made of paper or card which a) absorbs spills and b) isn't slippery. How do you deal with this?

--- End quote ---

There are coasters available that are made of hard/non-absorbent material.

I could do something like use a non-smooth self-adhesive material and attach that to the bottom side.

But I've used PCBs as coasters before and generally for my own in-home use I've never had a problem using them as they are.
djacobow:

Typically, coasters that are made of a non-absorbent material have a bit of a rim so as to contain the sweat from the glass. That would be hard to arrange for a PCB, but not entirely impossible. You could put a wire around the edge as people often do for a high-current trace.

However, I see more and more coasters that are pretty much just decorative, so why not.

Of course, even cooler would be a PCB coaster that actually did something. Maybe light up your drink and change color with the temperature or something. :-)
mdszy:

--- Quote from: djacobow on June 30, 2019, 05:28:44 pm ---
Typically, coasters that are made of a non-absorbent material have a bit of a rim so as to contain the sweat from the glass. That would be hard to arrange for a PCB, but not entirely impossible. You could put a wire around the edge as people often do for a high-current trace.

However, I see more and more coasters that are pretty much just decorative, so why not.

Of course, even cooler would be a PCB coaster that actually did something. Maybe light up your drink and change color with the temperature or something. :-)

--- End quote ---

That would be interesting too! I'm hoping to keep these quite cheap for now, so they'll just be bare boards, but add some electronics would be a lot of fun!
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