CrowdSupply: SPIDriver: A better SPI adapter

https://www.crowdsupply.com/excamera/spidriver

SPIDriver is an easy-to-use tool for controlling SPI devices. It works with Windows, Mac and Linux, and has a built in color screen that shows a live logic-analyzer display of all SPI traffic. It uses a standard FTDI USB serial chip to talk to the PC, so no special drivers need to be installed. The board includes 3.3 and 5V supplies with voltage and current monitoring.