RogerClark wrote:With the watch you linked to, I recall reading about it, and the USB connector was only for charging, which is a shame, as it may be possible to run VUSB on the nRF51 ( though I dont think anyone has actually done it)
I was thinking about buying one like that which has a landscape orientation screen, as the screen is physically bigger ( wider ) so I think it has double the number of pixels of the others.
But I dont think I will risk ordering from that page, I will find one ( albeit a few dollars more expensive) which lists the watch as containing the nRF51
I went for it, and ordered one of the watches with a bigger display (after reading an xda topic on it that all known versions of it contain the nrf51822), and even though not explicitely mentioned, it indeed contains the nrf51822
i ordered from here: https://www.aliexpress.com/item/100-Ori ... 36761.html
it was a bit tricky to disassemble, it's not screwed shut but glued. but heating it with my heat gun, and slowly prying off the touchscreen with a small screwdriver nicely opened it up
then the pcb's connection to the usb plug is also a bit nasty, it's glued & (and maybe also lightly soldered?) against it (without wires), but gently lifting the pcb got it loose without actually breaking anything it seems XD (the pads are still on the pcb). (maybe i just got lucky :p)
and then i gently pried the lcd loose since all the pads to connect it to a programmer appear to be under it. all in all i had it nicely disassembled in a couple of minutes, and can start seeing if it uses the same lcd & motion chips as the other watches, and if we can reprogram it
for the price it's quite a nice device XD.
And i haven't come around to porting the lcd library to the better arduino framework yet >_<. the watches are bit on a sidetrack atm >_<