sparkfun/Sound_Page_Kit
Public repository.
SM5100B cellular shield for Arduino Uno compatible boards, available from SparkFun Electronics.
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Public repository.
SparkFun Photon Wearable Shield
Battery Shield for the Spark Photon. Has a charging circuit, as well as a fuel gauge.
The MAX31855K performs cold-junction compensation and digitizes the signal from a K-type thermocouple. The data is output in a signed 14-bit, SPI-compatible, read-only format. This converter resolves temperatures to 0.25°C, allows readings as high as +1800°C and as low as -270°C, and exhibits thermocouple accuracy of ±2°C for temperatures ranging from -200°C to +700°C.