You are reading a single comment by @Gordon 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.
@Gordon
I moved this post to 'Other Boards' intentionally - I've just deleted the new post you made to the 'Official Boards' section.
If you decide you want to save a few quid by buying modules elsewhere and flashing yourself that's totally up to you, but I'm not going to provide the same level of support that I do for official boards.
You don't actually need a 32kHz crystal on the MDBT42 modules - they should work as-is. What you might be missing though is the full binary image with softdevice and bootloader. You'd have to build it yourself with https://github.com/espruino/Espruino/blob/master/README_Building.md