Smartibot

Thanks for the info @Robin I'll have a look at that to try and further my understanding.

Thanks for the code @Gordon and for the tip about finding the underlying code. I find it fun to dig about and try and understand these things, even if it usually comes to nothing! There is a lot of information about the chip here http://infocenter.nordicsemi.com/pdf/nRF­52832_PS_v1.1.pdf which looks pretty exciting, so I'm going to mess about with it using the js interface and see what happens.