SparkFun will be closed on Monday for Memorial Day (5/27). Orders placed after 2pm MT on Friday (5/24) will process and ship out on Tuesday (5/28).
Inspired to try something new for International Week of Making, Mary mixed and poured concrete over electronics in her office.
In honor of National Week of Making, I wanted to try something new. Something a little more civil if you know what I mean.
I spent about a week mixing various bags of concrete and cement in search of the perfect pourable consistency, strength and smooth finish in which to encase some electronics projects. My favorite mixture is two pounds of Rapid Set® Cement All® with 3/4 cup of water. I mixed the cement in a 1-liter plastic measuring cup with a pour spout and used a set of tiny spatulas to spread and smooth. This bag will make hundreds of projects, which means the cost of an individual project enclosure is at most a few cents.
I found a generic plastic wrap and tape works best to protect the circuit from possible water damage. The concrete clock only had electrical tape over the soldered connections between each WS281T breakout, which worked well.
Now I've got about 51 pounds of cement left to play with --- any suggestions?