We aren’t exactly sure how or even why you would need to RepRap in space, but we guess their team needed something to do while designing and printing their next version. They figure that if they can print completely upside down in -1G and then upside up in 1G, that 0G hopefully wont be a problem; hopefully being the keyword.
Even if it isn’t true space printing, the concept opens several new doors. Instead of having risky rocket or shuttle launches when the secondary air oscillator on the IIS is struck by an asteroid, print a new one. Or…

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The PCF8563 is a real-time clock/calendar/alarm chip with an I2C interface. This would be useful in projects where the primary microcontroller doesn’t have enough resources for an interrupt driven clock.
We demonstrate the PCF8563 using the Bus Pirate after the break. For a limited time you can get your own Bus Pirate, fully assembled and shipped worldwide, for only $30.

PCF8563 real-time clock calendar (Octopart search, $1.33). Datasheet (PDF).
The schematic above shows a bare-bones circuit for the PCF8563. It requires a simple external oscillator circuit with a 32.768khz watch crystal (Q1). The oscillator input pin needs an external…

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