use nrf52 for smartwatch spi

[jimkaragian]

Dear support,

Our team is considered doing their own smart watch, so i found that nRF52 chip is a nice solution. Just before we start, i would like to do some basic questions so we will not spend much time to an dead end.

So my questions are:

1) i see that nRF52 supports SPI. But can i use this protocol with Arduino IDE (with this library for example https://github.com/adafruit/Adafruit_nRF52_Arduino ) that i am more familiar? I want to connect some accelerometer, oled and maybe 1-2 more sensors.

2) can i use this chip (click here)  or like this (click here) or this instead of the big development boards? Do we need a permission to make a final product?

Which module from the above you suggest? (use in Greece, Europe)

Thank you in advance

[hmolesworth]

There are some nice nRF52 smartwatches on Amazon which you can use as a starting point, complete with code see this github nRF5x link

[jimkaragian]

very interesting! so, to see if i understand this correctly, i buy a cheap all-in-one smart watch and then flash it, with for example Arduino Core (using STM32 board as programmer) and then do whatever i want with the sensors and flash any sketch i want (like the arduino style sketches and libraries i use to read data from arduino/esp32/esp8266 etc)..right?