Reliable label printer system

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eliable label printer system Cookpad ech itchen #21 how-and- ell 2019.3.21 Shinsuke IMAI

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whoami hinsuke A @imashin_ erverside engineer

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Demo - print labels -

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Agenda ● When the label printer is used in our service ● Why we develop this remote label printer ● ow we develop this system

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rder flow rder products

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rder flow rder end time comes (a day before delivery)

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rder flow TSP743II E3-24J1 JP UD-LT1 / EX SORACOM VPC AWS Printer CKPD VPC SORACOM Print batch rint product labels via celler network

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rder flow roduct labels

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rder flow A-2 A-1 B-2 B-1 Deliver labeled products to users A-2 B-2

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Agenda ● When the label printer is used in our service => Ans. sending ordered items ● Why we develop this remote label printer ● ow we develop this system

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abel is mportant A-1

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eliable label printer system is required

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Agenda ● When the label printer is used in our service => Ans. sending ordered items ● Why we develop this remote label printer => Ans. All people depend on labels ● ow we develop this system

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First label printer ● i ad Air (Cellular model) ○ Application crashes ○ Difficult to auto update ● abel printer ( -820 WB Brother) ○ aper jam ● Direct wired ethernet connection ○ Connection lost

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ew idea ● eplace ○ i ad to a cloud computer ○ unstable connection to stable connection ○ the normal label printer to a stable label printer

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Cloud computer

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E router ● D- 1 iodata ○ ebooting ■ Daily ■ n connection lost ○ onitoring ■ ○ ogging ■ syslog

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rinter ● 743 tar icronics ○ Controllable via C socket ■ print / reboot / status check ○ onitoring ■ ○ am less ■ ??? ( est needed)

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rinter ● rints many labels ○ never happen jam

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rinter ● rints many labels ○ never happen jam ○ many label cores are created

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rinter ● rints many labels ○ never happen jam ○ many label cores are created ○ next seat engineers build unreliable Android tower

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et’s build!!!

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Direct print TSP743II E3-24J1 JP UD-LT1 / EX SORACOM VPC AWS Printer CKPD VPC SORACOM Print batch end label data from a batch to the printer

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Development ● etwork: @sorah ○ Build a network to use soracom ○ Device management

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Development ● rinter: @imashin ○ Develop gem to control printer via C socket https://www.starmicronics.com/support/Mannualfolder/starline_cm_en.pdf https://rubygems.org/gems/star_ethernet

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Development ● Assemble: @imashin ○ ake holes at the box ○ lace devices in one box

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Agenda ● When the label printer is used in our service => Ans. reparing orders ● Why we develop this online label printer => Ans. All people depend on labels ● ow we develop this system => Ans. Assembling reliable devices and services

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