The handheld coding machine works by converting the angular rotation into an electrical signal based on the encoder to determine the printing position, with wheels on both sides at the front. There is a sealing door in front of the ink cartridge that closes when not in use, and a soft silicone strip on the door blocks the nozzle. The overall structure is handheld, equipped with WIFI, including internal batteries and screen fixation details.
Specification: Handheld Printer Coding Machine
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