Thank you guys for your answers. I've got a bunch of those nrf51822 boards that I want to make use of to build some very basic sensors, e.g. water meter, pir, temperature, humidity etc. Effectively, scripts are going to be very basic and small in size, however I need to store a number, e.g. rotation count etc, this is just a small number to back up readings in case of any power outages.
This is an experimental project as a part of Eclipse SmartHome/OpenHab Bluetooth binding and Java Bluetooth Manager development.
I will definitely try to enable Flash module first, if this fails, I'll get some nrf52 boards.
Or maybe someone has a better idea on how to store a small number/variable?
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