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VoidstarLabs

Member Since: January 18, 2012

Country: United States

  • I always desolder or cut these resistors, R6 and R7, before using a Fio v3 in a project. This reduces quiescent current to about 70µA when the power switch is off.

    This mod only eliminates the ability to read the battery voltage on analog pin A10 and has no other effects.

    You could also swap them for 10kΩ resistors to keep the functionality but reduce the current draw.

  • You had me at “fart sensor”.

  • I purchased three of the Power Cell, which share this schematic, for use with XBees, and moved the solder jumper to 3.3v. Of the three, one entirely failed to work, and another output 4V, destroying an XBee. Since the shield’s power bypasses the Arduino’s regulator, this same problem will destroy the Arduino this is attached to.

    In addition, the EN pin of the TPS61200 is grounded and not accessible. This makes it impossible to switch the Arduino off without removing the shield altogether, and the shield drains at least 10mA per hour when not even connected to an Arduino.

    Purchase this product at your own risk.

  • I purchased three of these for use with XBees, and moved the solder jumper to 3.3v. Of the three, one entirely failed to work, and another output 4V, destroying an XBee. Purchase this product at your own risk.

  • I purchased three of these for use with XBees, and moved the solder jumper to 3.3v. Of the three, one entirely failed to work, and another output 4V, destroying an XBee. Purchase this product at your own risk.