books

Design Studio Q+A: Chronicle Books

Third up in this month’s Design Studio series is San Francisco’s very own Chronicle Books, which boasts an abundance of bestselling titles over a broad range of topics, including art and design, food, fiction, travel, and children’s books, in addition to some fabulously playful stationary and journals. Designer Suzanne LaGasa was our gracious hostess, taking […]

Microcontroller pet feeder build

Microcontroller pet feeder build

Pet owners who want to spend a day hiking, at the beach, shopping at the mall or even a weekend far from home can build an automatic pet feeder to dispense water and dry food at a preset time. Tom Thompson, Julie Redmond, Curtis Siebenaller and Nathan Woodworth at Colorado State University explain how to combine electronic and mechanical devices to do just that.

Portable automated greenhouse

Portable automated greenhouse

My project is a portable greenhouse / seed starter that has high tech features and collapses for easy storage. Since a standard greenhouse can overheat if it is closed up or get too cold if it is opened up, mine includes an automatic vent that controls to a user selectable temperature. The user first selects a temperature between 60 and 95 degrees Fahrenheit, by 5 degree increments. Then the greenhouse’s built in sensors and microcontroller automatically adjust how much the vent is opened or closed to help maintain that temperature. And because of its ultra low power design the whole thing can run 24/7 for about a month on just four penlight (AA) batteries!