A prototype GPS tracker and interface, intended primarily as an on-water speed display.
The firmware is written in rust. A water resistant enclosure is used with various 3d printed components. In order to ensure water resistance, the external switches magnetically couple to internal reed switches.
https://core-electronics.com.au/stm32f411-blackpill-development-board-49034.html
https://core-electronics.com.au/pololu-3-3v-500ma-step-down-voltage-regulator-d24v5f3.html
https://core-electronics.com.au/adafruit-sharp-memory-display-breakout-2-7-400x240-monochrome.html
TBS M8.2 GPS Glonass (BN180 clone?)
https://core-electronics.com.au/small-plastic-project-enclosure-weatherproof-with-clear-top.html
To build the code, you need the thumbv7em-none-eabihf rust target:
rustup target add thumbv7em-none-eabihf
and cargo embed:
cargo install cargo-embed
On linux, add udev rules to ensure the stmlink device is accessible to all users:
$ cat /etc/udev/rules.d/50-stm-stlink.rules
# STMicroelectronics ST-LINK/V2
ATTRS{idVendor}=="0483", ATTRS{idProduct}=="3748", TAG+="uaccess"
$ sudo udevadm control --reload-rules
Then build and flash to the embedded board with:
cargo embed --release