Today I wanted to share a how-to of one of my projects with you. So once I had some cats. And an extra apple tree. And I wanted to be noticed in the dark. So I made some fruit batteries out of apples and attached them to the running jacket. This way I could burn more calories with the added weight while I run, and have a snack on the go (don’t eat the copper or crack a tooth on the nail if you decide to repeat my project).

	Pulse Jacket In line with all the wearable technology craze, this Pulse Jacket by Miria Grunick is a great application. It reacts to heart rate while you run and makes you visible to all the nighttime traffic. (Via Hackaday)
	Long Exposures and Fruit Batteries There’s something cool (or poetic) about illuminating long exposure photographs of fruit with the light that they generate. By Caleb Charland, via Colossal.
	Soil Moisture Sensor Monitor the soil moisture using only nails and little bit of electronic ingenuity, by Manoel Ramon, via Arduino blog.
	Light Transformed into Sound Wassiliscope, a device called after Wassily Kandinsky, turns light into sound in real time. Can see all the practical applications for it. By Christopher Yamane, via Designboom.
	Robotic Whiskers Now this is the cutest robotic application so far, introducing Shrewbot the whiskerbearer, and the second generation – e-whiskers. (via IEEE Spectrum)

And what about cats, you would ask. In this case cats don’t have any practical application, they are there for attention grabbing purposes only.