Electronics > Projects, Designs, and Technical Stuff
PCB Coasters
thinkfat:
Now, if you could use the spilled liquid together with special coating on the pads, forming a 'beer cell battery', that would then light a LED...
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ptricks:
I have coasters with cork on top of them , suppose to absorb the moisture I guess. The problem remains that when it is humid if I lift my glass the coaster comes with it and then drops off with a thud onto the table . I would think a PCB or smooth surface +water + bottom of glass would be even worse.
Ysjoelfir:
--- Quote from: ptricks on July 01, 2019, 11:57:13 am ---lift my glass the coaster comes with it and then drops off with a thud onto the table .
--- End quote ---
I always thought of this as some kind of feature, as long as the coaster isn't too wet and sprinkles everything with beer after landing.
thinkfat:
--- Quote from: Ysjoelfir on July 01, 2019, 12:26:50 pm ---
--- Quote from: ptricks on July 01, 2019, 11:57:13 am ---lift my glass the coaster comes with it and then drops off with a thud onto the table .
--- End quote ---
I always thought of this as some kind of feature, as long as the coaster isn't too wet and sprinkles everything with beer after landing.
--- End quote ---
Then, mill some slots into the pcb and line the bottom with cork. This will break the surface tension, stop liquid leaking through and provide some friction on the table.
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Gyro:
You're better just using a Pringles lid - it provides thermal insulation from the desk. Put another one over the top of a hot drink and it prevents heat loss from evaporation. ;)
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