Newer versions of the Arduino SPI library support transactions and the setup is very easy. In fact, transaction support in the Arduino library is something [Paul] worked on himself, and gets ...

Here, Serial Peripheral Interface (SPI) is used for communication ... by communicating control signals from a PC using an Arduino Mega 2560 to control the four HV513 (total 32 channel control).

[Andy] stuffed some more RAM onto an Arduino Mega and his three-part walk through on the design, construction, and software is a great read and one of the more ‘hard core’ Arduino builds we ...