Adafruit DHT22 385 Benutzerhandbuch

Produktcode

385

Aosong(Guangzhou) Electronics Co.,Ltd

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Tell: +86-020-36380552, +86-020-36042809

Fax: +86-020-36380562

Address: No.56, Renhe Road, Renhe Town, Baiyun District, Guangzhou, China

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Start transmit 1bit data

Start transmit next bit data

26-28us voltage-length means data "0"

Host signal

Sesnor's signal

Single-bus signal

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Step 3: AM2303 send data to MCU

When AM2303 is sending data to MCU, every bit's transmission begin with low-voltage-level that last 50us,

the following high-voltage-level signal's length decide the bit is "1" or "0".

Check bellow picture for step 3:

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