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elorest/usb.cr Secret

Created January 17, 2019 21:45
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usb.cr
# shell command:
# echo -en '\x05\x40\x10\x08\xA3' > /dev/ttyUSB0
usb0 = File.open("/dev/ttyUSB0", "a+")
usb0.puts "\x05\x40\x10\x08\xA3".to_slice
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