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Sparkfun support will be closed from 3:00PM to 4:15PM on April 27th for a company-wide townhall meeting. We will resume regular hours on the 28th.

Member #514163

Member Since: January 27, 2014

Country: United States

  • I use this with a AAA battery as a small stand-alone audio amplifier for an earpiece. The efficiency is unbelievable. To get the unit to 3.3V I use the following booster:

    http://www.ebay.com/itm/DC-1V-1-5V-3V-to-3-3V-Step-UP-Power-Converter-Voltage-Module-STM32-FPGA-CPLD-DSP-/271308401258?hash=item3f2b3daa6a:g:2vcAAOSwZtJW-~Tn

    This little booster is super efficient as well. Bottom line is that this combination, even with such a small battery, seems to have as much run time as with a 9V battery would using an LM386.

No public wish lists :(