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LED on if GPIO outputs / inputs high level, LED off if GPIO outputs / inputs low level. The status LED is driven by the chip instead of the GPIO so the GPIO will not be affected. This breakout board can help you wire and know the status of the GPIO.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.