Digistump Forums
The Digispark => Digispark Project Ideas => Topic started by: cliffbhill on August 25, 2012, 08:52:12 am
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Would be nice to have a shield that clips onto a 9V battery.
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That\'s literally just any other shield with a 9V battery connector soldered to the GND and VIN pins.
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Not talking about just an electrical connection.
To go battery powered, you need some battery holder wired to the board (w/ boost ) which will then need to be secured.
If you had a shield with the 9V + & - connectors mounted to the board, you\'d take care of the electrical and physical mounting in one.
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That seems unnecessarily restrictive. If you solder a 9V connector with wires (http://www.led-tech.de/images/products/resized/LT-362-1264685968.jpg) onto the board then you can position the battery wherever you want in relation to the digispark and other shields. If you had a shield with 9V terminals directly attached to it, you\'d have to have the battery sticking up from the shield.
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I\'ve been reading in the other Arduino groups that the 9v battery meant for fire alarms is not that suitable for Arduinos long term, since you are wasting about 1/2 of the power of the battery, and it doesn\'t have much capacity. But it is very convenient, in that you only have one battery to deal with and it is a reasonable size.
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Yes, not the most efficient power wise, but enough VIN for motors, etc. and super convenient.
Made a quick sketch of the idea in sketchup.
http://sketchup.google.com/3dwarehouse/details?mid=5f392457e9aed9e0d1cad3f0e16ef824&prevstart=0