kitten playing with trackers
the second, another nrf51822, this time by itself, and this time using a CR2477 batterythis one... is not looking good. it's just too big, and that's with half the PCB empty. besides, the case has no way of attaching it to anything
it does have an upside though: I found the datasheet in the internet, with the pinout. not only that, it has 4 available digital I/O pins, which means: potential
a.aliexpress.com/_EHqjtVA
www.holyiot.com/tp/2019042814310092401.pdf
