Hey guys, I have a question for everyone. I would like to make my program more efficient in terms of saving battery power. I currently have an adafruit PN532 NFC reader connected to a SparkFun Fio V3 that powers a servo to lock and unlock my front door when the card is detected. It is being powered …

Adafuit PN532 draining battery

J-M-L December 9, 2018, 11:49pm 10

They explain the issue in their FAQ

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