User Manual

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Only three pins are available for use: VCC, GND, and DATA. The communication process
begins with the DATA line sending start signal to DHT11, and DHT11 receives the signal and
returns an answer signal, then the host receives the answer signal and begins to receive 40-
bit humiture data (8-bit humidity integer + 8-bit humidity decimal + 8-bit temperature integer
+ 8-bit temperature decimal + 8-bit checksum). For more information, please refer to the
datasheet of DHT11.
Experimental Procedures
Step 1: Build the circuit
Raspberry Pi T-Cobbler Humiture Module
GPIO0 GPIO17 SIG
5V 5V0 VCC
GND GND GND