Power modules and batteries for maker projects
14 parts, each with its pinout, wiring per board, code that compiles and the mistakes to avoid.
9V BatteryA 9V alkaline battery (IEC 6LR61 / ANSI 1604A, PP3 form factor) that delivers a nominal 9 volts from six 1.5V cells stacked in series.
18650 Li-ion Cell + HolderA rechargeable cylindrical lithium-ion cell, 18 mm by 65 mm, that charges to 4.2 V and powers projects from about 3.6 V nominal.
2 x AA Battery HolderAn open holder with two AA alkaline cells in series that supplies a nominal 3 V for LEDs, 3 V logic and a Pico's VSYS.
AMS1117 3.3V Regulator ModuleA thumb-sized AMS1117-3.3 breakout that turns a 5 V rail into a regulated 3.3 V, capacitors and power LED already fitted.
LM1117 3.3V Regulator (TO-220)TI's 800 mA low-dropout regulator in TO-220: a fixed 3.3 V from a 5 V or higher supply, with about 1.2 V of dropout.
LM2596 Buck Converter ModuleThe classic blue step-down module: up to 40 V in, an adjustable output from a multi-turn trimmer, built on TI's 3 A LM2596.
MB102 Breadboard Power ModuleA plug-on breadboard power supply that puts 5 V or 3.3 V on each pair of rails from a 6.5 V to 12 V adapter or USB.
MT3608 Boost Converter ModuleA small adjustable step-up converter that boosts 2 V to 24 V up to as much as 28 V, set with a multi-turn trimmer.
TP4056 USB-C Li-ion ChargerA single-cell Li-ion charger board that charges one 3.7 V cell to 4.2 V at up to 1 A from USB, with cell protection on its output.
LM317The classic adjustable linear regulator in TO-220: two resistors set any output from 1.25 V to 37 V at up to 1.5 A.
LM7805The classic fixed 5 V linear regulator in a TO-220 package, turning 7.5 V to 20 V into a regulated 5 V at up to 1.5 A.
PowerBoost 1000CA LiPo charger and 5.2 V boost converter in one board, with load sharing, that runs a 5 V project from one lithium cell and keeps it running while charging.
S9V11F5A thumbnail-sized Pololu buck-boost regulator that holds 5 V from any input between 2 V and 16 V, ideal for running a 5 V board from AA cells or one lithium cell.
XL4005A 5 A adjustable buck converter module that steps 5 V to 32 V down to 0.8 V to 30 V at up to about 90 % efficiency, set with a multi-turn trimmer.