5Pcs Square Wave Generator LM358 Duty Cycle Frequency Adjustable Module For gi
12,87 €
5Pcs LM358 Duty Cycle Frequency Adjustable Module For Arduino Square Wave. The main chip: LM358. Output with LED indication, there is no output straightforward (LED high amount, low level LED off LED flashes when the low frequency, high frequency LED will be lit, because the naked eye can not distinguish from).
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