There’s even a header for SPI making it easier to add custom hardware if necessary. This is a dual-layer board which may not be ideal for your own fabrication process. [Bert Kruger] posted ...

Not according to [techtoys], who has created an Arduino shield that creates an HDMI output from an SPI control input. This is a project that seems to have been around for a couple of years ...

How the platform helps streamline the design process. The custom options offered.

Then, an Arduino board might be exactly what you ... module since they connect to different pins (the Wi-Fi shield to the SPI bus, and the Bluetooth module to the TX and RX pins).