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LED Fingertip Top Three-leaf Finger Top Transparent Acrylic Shell Luminous Display DIY Production Kit

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                  Feature:

                  Weight: 40g

                  Power supply: 3 CR1220 button batteries (excluding battery)

                  Dimensions: 7*1cm

                  Circuit board material: double-sided 1.6 FR-4 glass fiber board

                  Functional principle: After welding, it can be rotated on the finger. Can display text, pictures. Three CR1220 button batteries are used in series to supply power. After being stabilized to 5V by the voltage stabilizing chip, it is provided to the single-chip microcomputer with a power switch. The 24 SMD LEDs are controlled by the single chip microcomputer to flash and emit light at high speed according to the font data, using the phenomenon of persistence of human eyes.

                  Package includes:

                  1 x DIY KIT

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