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+## Memory 
+Gives the information on the memory used by  M0  core.
+## SD Card 
+Gives information on the SD card and allows it to be tested.
+## Peripherals
+Gives information on the peripherals:
+* RFFC5072
+* MAX2837
+* SI5351C
+* WN8731
+## Temperature 
+Data is provided by the MAX 2837 on chip digital temperature sensor. The accuracy is quoted as 4.33°C per value.
+## Buttons Test
+This shows when either the buttons are pressed or the encode knob is turned. It can also show if the encoder when turned is cleanly stepping the states as it is turned. Note on cheep portapack clones of the encode that is 24 step version can be over sensitive and miss steps. It can be changed with a better-quality version.