SparkFun will be closed Monday 7/4/2022 for the 4th of July holiday. Orders placed after 2 pm MT on Friday 7/1/2022 will be processed on Tuesday 7/6/2022. SparkFun Support will also resume on Tuesday 7/6/2022. Have a safe holiday!
Track My Order
Frequently Asked Questions
International Shipping Info
Send Email
Do you want to control a standard wall outlet device with your microcontroller, but don’t want to mess with the high-voltag…
The MyoWare® 2.0 Muscle Sensor Development Kit is an Arduino-compatible, EMG sensor kit that provides you with every board f…
added to your cart!
LiPo batteries are a great way to power your projects. They're small, lightweight, and pack a pretty good punch for their siz…
The SparkFun Qwiic Single Relay provides you with the easiest to use relay yet, handling up to 5.5A at 240VAC for long period…
The SparkFun bi-directional logic level converter is a small device that safely steps down 5V signals to 3.3V AND steps up 3.…
Slim, extremely light weight batteries based on Lithium Ion chemistry. Each cell outputs a nominal 3.7V at 1250 mAh and is IE…
This is the Sunny Buddy, a maximum power point tracking (MPPT) solar charger for single-cell LiPo batteries. This MPPT solar …
The SparkFun 5V/1A LiPo Charger/Booster is a no-nonsense circuit for generating one amp from a Lithium Polymer battery at 5V.…
Featuring the AP63203, this baby breakout board takes advantage of a 2A synchronous buck converter that has a wide input volt…
This is the same 18650 Lithium Ion Cell that you know and love, but now includes pre-attached solder tabs! These round high c…
No, these aren't some sort of weird, AA battery, this is actually a 18650 Lithium Ion Cell. These round high capacity cells h…
This is an industrial grade DC Buck-Boost converter that inputs 8V to 40V and outputs 12V up to 3A or 36W. With tons of heats…
This is a very small, extremely lightweight battery based on Polymer Lithium Ion chemistry. This is the highest energy densit…
The SparkFun Qwiic Quad Relay is a unique power accessory board, used for switching 4 high powered devices from your Arduino …
These are very slim, extremely light weight batteries based on Lithium Ion chemistry. Each cell outputs a nominal 3.7V at 850…
If you need to charge LiPo batteries, this simple charger will do just that, and do it fast! The SparkFun LiPo Charger Basic …
The PiJuice is a fully uninterruptible power supply HAT that will always keep your Raspberry Pi powered.
These are very slim, extremely light weight batteries based on Lithium Ion chemistry. Each cell outputs a nominal 3.7V at 200…
This is a breakout board for the Texas Instruments TXB0104 module. The TXB0104 is a 4-bit bidirectional voltage-level transla…
CUI Inc SWI10 Wall Plug Adapters provide up to 12W continuous power.
We love the Otii Arc! It is a truly versatile power supply and analyzer. Coupled with powerful but easy-to-use software, it i…
This is a high quality switching 'wall wart' AC to DC 5V 2000mA Barrel Jack wall power supply manufactured specifically for S…
This is a unique two-cell AAA battery holder built specifically for the BBC micro:bit. The 6" (~150mm) cable has been termina…
The INA169 is a “high-side current monitor,” which means that you place a resistor (a “shunt resistor”) on the positi…
The MyoWare® 2.0 Power Shield is designed to easily power the MyoWare 2.0 Muscle Sensor remotely.
Slim, extremely light weight batteries based on Lithium Ion chemistry. Each cell outputs a nominal 3.7V at 1000 mAh!
The SparkFun LiPo Charger Plus is the suped-up power option in the SparkFun line of single-cell lithium polymer (LiPo) batter…
Have a project that needs some good power? Do you like free power provided by our friend, Mr. Sun? Check out this high qualit…
The SparkFun Adjustable LiPo Charger is a single-cell lithium polymer (LiPo) and lithium ion battery charger. Because it’s …
This is a very small, extremely lightweight battery based on Lithium Ion chemistry, with the highest energy density currently…
Your 5V system can wield great power with this big, beefy relay board. How does 10A on the NC contacts and 20A on the NO cont…
If you need some juice, this 6Ah Lithium Ion Battery is for you. These are very compact batteries based on Lithium Ion chemis…
This breakout board uses the LTC3588 Piezoelectric Energy Harvester from Linear Technologies. This board can be used not only…
This is an industrial grade DC Buck-Boost converter that inputs 8V to 36V and outputs 12V up to 6A or 72W.
Here is a very simple breadboard power supply kit that takes power from a DC wall wart and outputs a selectable 5V or 3.3V re…
This is a very simple board that takes a 6-12V input voltage and outputs a selectable 5V or 3.3V regulated voltage. All heade…
This is a high quality power supply manufactured specifically for SparkFun Electronics packs a lot of power; 20W at 5V and 40…
SparkFun Jetson Nano Intermediate Kit with Battery Pack provides you with all of the essential parts needed to start new proj…
If you need to charge LiPo batteries, this simple charger will do just that, and do it fast! The SparkFun USB LiPo Charger is…
This USB Power Meter is a versatile tool that can provide voltage, current, capacity, and impedance displayed on the built-in…
Featuring the AP63203, this breakout board takes advantage of a 2A synchronous buck converter that has a wide input voltage r…
SparkFun Jetson Nano Intermediate Kit with Power Supply provides you with all of the essential parts needed to start new proj…
This is the SparkFun MOSFET Power Control Kit, a breakout PTH soldering kit for for the [RFP30N06LE](http://www.sparkfun.com/…
The PoE+ HAT allows you to power your Raspberry Pi using Power over Ethernet networks with up to 25.5 Watts (PoE+) over CAT5 …
This adjustable wall adapter features a rotary switch on the enclosure that allows you to select the voltage.
This is a high quality switching 'wall wart' AC to DC 9V 650mA wall power supply manufactured specifically for SparkFun Elect…
The SparkFun Qwiic Quad Solid State Relay Kit takes one of our favorite solid state relays and lets you place up to four of t…
The 1.2 Watt Volt small solar panel from Voltaic Systems is a lightweight, waterproof, small solar panel designed for 5-7 yea…