A puppy tracker has a in particular grueling set of necessities: small, mild, rugged, extremely lengthy battery existence, secure for the puppy, and inexpensive. [Mihai Cuciuc] was once taking a look on the choices and wasn’t extremely joyful with any of them. In order any hacker would, he rolled his personal, dubbed Squeak.
It makes use of an RN2483 module as this can be a LoRAWAN module with publically to be had firmware from Microchip itself. This implies [Mihai] may upload his code and stay the modem code with no need to opposite engineer the whole lot or upload a 2nd microcontroller. Along with the modem, there’s a GPS unit attached by means of UART. The artful phase is the twin voltage regulators — the only powering the GPS is enabled or disabled by means of the RN2483. As well as, the RAM V_BACKUP line is at all times powered, because of this the RN2483 can energy up the GPS and let it get a snappy repair (because of the RAM backup line).
To maximise the possibilities of a packet making it thru, he made them simplest have the naked necessities. There are go back packets to modify the tracker’s mode (corresponding to uplink period or how incessantly to seize GPS). With some cloud strengthen, [Mihai] created infrastructure to seize the packets and relay them to Telegram. He can request the final location, obtain updates, and alter modes.
We’ve were given you lined if you happen to’re concerned about monitoring a few of your canine’s different behavior.