First thing I do, is I usually do the edge pieces,” Linda explains as she puts in place the first few pieces of her latest jigsaw puzzle. “I'll do a 1,000-piece puzzle in a day,” Linda says. Then, the ...

The box contains the final gift, but first a series of puzzles must be solved in order to open the box. The project runs on an Arduino Mega. This is hooked up to several sensors, including a ...