For a while now I’ve wanted a coaster to take to parties that makes my vodka (alcohol of kings) glow fancy pretty colors!
Yesterday I finally got around to it while on Skype with someone.
Didn’t take any photos but its pretty darn self explanatory,
The Pro Mini drives the single 5050 RGB LED ( common annode )
That’s connected to +5v through a resistor (I forget the value haha)
And PWM pins 3, 5 and 6.
I searched instructables and found a random sketch (LINK) that fades through colours, uploaded it, then wired up a switch, and a lithium charging circuit, to a err… What I THINK is a LiPo battery. Searching its name brings up references to other LiPo batteries…
Charger *seems* to work on it and voltages look normal sooooo….
I’m not sure if the Pro Mini can run off 3.3v (I have some spare 3.3v regulators)
So the battery is currently connected to GND and RAW.
Seems to work okay 😀
I’ll seal around the switch later with hot glue in case of spills, and the rest of the circuit is raised on some foam.
Its all shoved inside the enclosure that some apple ear buds came in, I removed the plastic inside with great difficulty, and it all fits in quite well.