The SparkFun LiPo Fuel Gauge - MAX17043 connects your LiPo battery to your project and uses a sophisticated algorithm to detect the relative state of charge and direct A/D measurement of battery voltage.

The SparkFun Audio Codec Breakout - WM8960 is a low power, high quality stereo codec with 1W Stereo Class D speaker drivers and headphone drivers.

The SparkFun Analog MEMS Microphone Breakout makes it easy to work with the Vesper VM2020 analog microphone. The VM2020 is an ultra-high Acoustic Overload Point (AOP), high dynamic range, differential analog output piezoelectric MEMS microphone.

The SparkFun NanoBeacon Board - IN100 and SparkFun NanoBeacon Lite Board - IN100 offer a 2.4 GHz wireless low energy beacon breakout with exceptional low power consumption features and minimal programming required.

Lithium-Ion Polymer (LiPo) batteries are a favorite of ours. Very light weight and some of the highest energy densities available.

This tutorial will go over how to use an ESP32 microcontroller to connect to u-blox Thingstream and PointPerfect over Internet to push correction data to a high precision GNSS.

The SparkFun GNSS Correction Data Receiver - NEO-D9S is a satellite data receiver for L-band correction broadcast. It can be configured for use with a variety of correction services including u-blox's PointPerfect satellite GNSS augmentation service.

The SparkFun IoT RedBoard is an ESP32 Development Board that includes everything but the kitchen sink!