This supports my YouTube channel https://www.youtube.com/c/RalphBacon, and specifically video #49 PCF8574 Pin Extender. There are three sketches here, starting with ...
This is an arduino IDE library to control the LIS3DH. It can be configured to use I2C or SPI with 2 instances per I2C channel or any number of SPI instances. The top-level driver, class LIS3DH, ...
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