We only care about the firmware files not bootloaders/etc

utils/rename_binaries.sh

@@ -28,7 +28,7 @@ mkdir -p distrib
 DATE=$(date +%Y-%m-%d)
 VERSION=$(git describe --always)
 
-for file in $(ls .pio/build/*/*.bin .pio/build/*/*.elf .pio/build/*/*.uf2)
+for file in $(ls .pio/build/*/firmware.bin .pio/build/*/firmware.elf .pio/build/*/firmware.uf2)
 do
     NEWNAME=$(echo $file | sed 's|.pio/build/\([^/]*\)/\(.*\)\.\(.*\)|\1_'$DATE'_'$VERSION'.\3|')
     echo $file to distrib/$NEWNAME