02-23-2023, 11:59 AM
DE/RE not need to use, MAX13487 will auto control the signal direction. for ESP32 just use RXD,TXD pins is ok.
DE/RE pin just connect together with 10k resistance to Vcc is ok.
do you have define the Serial2 pin in your arduino config fle firstly?
DE/RE pin just connect together with 10k resistance to Vcc is ok.
do you have define the Serial2 pin in your arduino config fle firstly?
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