SparkFun code, firmware, and software is released under the MIT License. Please see LICENSE.md for further details. Serial.print it out at 115200 baud to serial monitor.

The SparkFun Fingerprint Sensor - FPC2534 Pro is a small, highly capable and robust fingerprint sensor that can easily be integrated into virtually any application. Based off the AllKey Biometric ...

In case you missed it, the big news is that a minimal Arduino core is up and working on the ESP32. There’s still lots left to do, but the core functionality — GPIO, UART, SPI, I2C, and WiFi — are all ...

To prevent data corruption when using multiple SPI devices on the same bus, care must be taken to ensure that they are only accessed from within the main loop, or from the interrupt routine, never ...

Developers, hobbyists and makers looking to learn more about communicating with I2C and SPI components, may be interested in a new teaching solution created by Daniel Hienzsch in the form of the I2C ...