Episode 3: Solving power problems Oct 28, 2014 3:03:27 GMT Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by Honus on Oct 28, 2014 3:03:27 GMT Episode 3 is up!Links to products mentioned-Batteries:Battery University- a great site to learn all about battery technologyOnlybatteries.com- they sell all kinds of loose NiCd and NiMH cells and battery packsA123 Systems- makers of LiFePO4 cells. The cells that will be most useful for costumes and props are the APR18650 and the ANR26650.Adafruit and Sparkfun sell all kinds of single cell LiPo batteries and special chargers for charging them.Hobbyking sells just about every type of multicell LiPo battery pack available at very low prices.Voltage regulators and DC-DC converters:Adafruit has a good article on various voltage regulators [a href="https://www.adafruit.com/partfinder/vreg?s=78l05"]here[/a].Sparkfun sells the basic 7805 linear voltage regulator (they also carry several other voltage regulators.)Digikey sells a neat switching regulator (as well as just about every other voltage regulator under the sun.)Adafruit sells the neat Traco step down (buck) voltage converter (they also sell the 3.3V version.)Pololu sells a wide variety of step up/step down converters and voltage regulators.Transistors, relays and diodes:Adafruit sells a N-channel MOSFET, TIP 120 transistors, and small NPN transistors as well as 1N4001 diodes.Sparkfun sells the awesome PowerSwitch Tail II for turning on AC powered devices with your microcontroller. Adafruit also carries it.