Some new modules for easy life.
First low cost 4.3" display from sharp (30$ LQ043) + 20$ for other
It's extended - in a compact - only display size. This and other based on STM32 MCU and compatible with Maple platform.
Next for tracker life need RF link. For this low price RF modules in tracker via SPI and USB adapter to host - with dual 2.4G and 868M adapters
top side - 2.4GHz and back 868MHz modules with antennas.
And at the end tracker with internal GSM antenna, GPS and other.
All device based on STM32 MCU and as minimum support Maple bootloader to use with Maple-IDE.