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购买 arduino timer

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DC 6-30V Support Micro USB 5V LED Display Automation Cycle Delay Timer Control Off Switch Delay Time
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购买 arduino timer

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$12.98
Gikfun 60 Seconds DIY Electronic Timer Soldering Practice Board Kit For Arduino 61 Red LED EK1904
Amazon.com
134
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Gikfun 60 Seconds DIY Electronic Timer Soldering Practice Board Kit For Arduino 61 Red LED EK1904
Amazon.com
134
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NE555 Timer Module W/ Dual-Color Flashing Leds - DIY Soldering Kit For (Arduino-Compatible)
Aliexpress
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Ic Ne555n Timer St Microelectronics Dip8 Clock Arduino Time Generator
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