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Single chip microcomputer STM32L151CCU6
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1206RGB (single)
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Probe domestic double-head probe 038-BB-5.7L The shape of the two ends of the needle is outside the pointed needle
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0201 package SLP0603 ESD electrostatic diode 5V one-way ESD
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Manufacturers supply LED lamp bead SMD LED 0805 yellow light super bright indicator light dedicated
Display solid five-pointed stars, dots, and heart-shaped figures on the 8*8 dot matrix LEDs, and select the graphics to display by pressing the buttons.
The schematic diagram of the circuit is shown below:

Figure based on single-chip microcomputer dot matrix LED display simple graphics schematic