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Use stable udev symlink for Datamax device instead of /dev/usb/lp0
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randy committed 2026-09-12 16:51:56 +02:00
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commit f1304206d7
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app.rb
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@@ -13,7 +13,7 @@ if !File.exist?('config.json') || !File.readable?('config.json')
raise RuntimeException, 'Could not read config.json' raise RuntimeException, 'Could not read config.json'
end end
PRINTER_DEVICE = '/dev/usb/lp0' PRINTER_DEVICE = '/dev/usb/lp_datamax' # stable udev symlink, see /etc/udev/rules.d/99-datamax.rules
PRINTER_DPI = 203 # DatamaxONeil E4204B Mark III native head resolution PRINTER_DPI = 203 # DatamaxONeil E4204B Mark III native head resolution
PRINTER_DARKNESS = 8 # lower than factory default to stop thermal dot-gain from fusing barcode bars PRINTER_DARKNESS = 8 # lower than factory default to stop thermal dot-gain from fusing barcode bars
TEST_LABEL_PDF = File.join(File.dirname(__FILE__), 'test-label.pdf') TEST_LABEL_PDF = File.join(File.dirname(__FILE__), 'test-label.pdf')