STorM32 NT Modules
The v3.xx firmware supports NT modules with STM32G4 processor (NT modules with STM32F103 processor are not supported).
Generally, the NT bus ports on the NT modules differ from the NT bus connectors on the STorM32 controller boards in that their Rx and Tx pins are swapped.
Comment: The Rx, Tx pins of the NT ports on the NT modules must be connected to the Tx, Rx pins on the STorM32 board.
"Original" STorM32 NT Moduless
Design schemes are located in https://github.com/olliw42/storm32bgc.
Connectors
The NT modules generally have a 4 pin JST-SH plug for the NT bus connector, and in addition may have 6-pin headers for the NT-X bus, with pin assignments as shown below. The connections might also be exposed as solder pads.
The modules in addition usually offer a BOOT0 solder jumper (the bootloader listens on the NT bus (UART1) pins), and some expose the SWD pins, to allow for easy first-time flashing.
Some modules offer some further solder jumper for configuring them, and some may provide access to additional extension pins.
NT IMU v4.x
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