You are reading a single comment by @Cadas and its replies.
Click here to read the full conversation.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Cadas
The link you sent is board https://www.tindie.com/products/rfcat/rfcat-n32-long-range-bluetooth-development-board/ which explicitly says it is prepared for Arduino and has bootloader preinstalled.
Your cheap board has nothing like that out of box. However the pins are clearly mentioned in user manual (and back of board) so with that information it is relatively easy to add support such board to Espruino or Arduino yourself if you understand how it works (adding board support, pin mapping, bootloader, nrf52 platform). If you don't then it is really lot of information to cover. Also for Arduino this is not the right forum.
Yes, there are. However there is no simple help or answer except maybe - For using Arduino buy a board that supports Arduino out of box :-)
As for getting Espruino working on that board you'd need to build it from source https://github.com/espruino/Espruino/blob/master/README_Building.md#for-nordic-semiconductors-nrf51nrf52-series-devices with slightly changed board file, you can start from https://github.com/espruino/Espruino/blob/master/boards/MDBT42Q.py and just change serial rx/tx, LEDs and button pin mapping there.
Once full image (including softdevice and bootloader) is built you need to flash it via SWD.
I got Espruino working with similar E104-BT5032A board, sample board file here https://gist.github.com/fanoush/3be052f44398ee44cc8c272ee8eadc81