Our “muntjac” processor/radio board is now being tested on the original ms1 interface board. It uses a CC2538 and CC1200 as its radio and has flash storage for readings. Here you can see it sitting on top of the board – which is possible as it has the same connections as the z1.
The Muntjac is very much a shortcut for us to use an ARM core – we don’t actually use the 2.4GHz radio for example.