Really Bare Bones Board - RBBB

Really Bare Bones Board (RBBB) is a mini board designed for those experimental applications that require small processors, such as wearable computing, near space experiments, toy prototyping, artist’s projects or any use for a fairly small, low-cost microcontroller.

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As a thru-hole, Arduino-compatible kit, you can build a RBBB in 45 minutes, even as a beginner. The pin labels on the current version are between the pins, similar to the Arduino Nano.

Remember that, like the Aurduino, the most common variant uses 5v for chip supply and logic levels.

There are 3.3V versions of this kit available also - preferable when interfacing directly to recent sensors that only tolerate the lower voltage.

There is even a replacement 3.3V L4931 LDO regulator available to convert an existing 5V RBBB1 to 3.3V operation - simply swap out this part on the PCB.

There is a replacement 5.0V L4931 LDO regulator available if you have accidentally inverted the polarity of the power feed - usually only this part blows, sacrificing itself to protect the other parts on the PCB.

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