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STC15W204S single chip Microcomputer System (CON-001) 51 single chip microcomputer system control chip robot diy

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Metal gripper aluminum alloy mechanical paw DIY robot model ARM hand claw gripper device

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Mini Tool Kit No. 1 DIY technology small production screwdriver assembly toolbox model gear installer

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10x 10cm Glossy Color Tin Foil Gift Wrapping Paper Student Children diy Handmade Material

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LED cylinder lamp holder (yellow) plastic lampshade led light emitting diode bracket DIY model fixed bracket

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Digital Display thermostat DIY temperature controller module temperature control switch sensor 12V High Precision Temperature control

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Solar panel 12V320MA photovoltaic panel DIY small panel technology model power supply

Delay 5v relay module (can be triggered by button) timer delay conduction switch DIY electronic production