TTGO T-Higrow ESP32 토양 온도 습도 센서 -DHT11
(TTGO T-Higrow ESP32 Soil Temperature Humidity Sensor -DHT11)
개요
- 본 제품은 TTGO T-Higrow ESP32 토양 온도 습도 센서 -DHT11입니다.
- ESP32 블루투스 WiFi 칩 및 DHT11 온도습도 센서, 정전식 프로브를 가지고 있는 식물 모니터링 센서입니다
- 장착된 USB 커넥터를 통해 아두이노 IDE로 프로그래밍이 가능합니다.
- 아래와 같이 LoRa 쉴드와 결합하여 원거리에 측정 데이터 전송이 가능합니다.
특징
-
Hardware Specifications
Chipset
ESPRESSIF-ESP32 (Wi-Fi & Bluetooth)240MHz Xtensa® single-/dual-core 32-bit LX6 microprocessor
FLASH
QSPI flash 4MB
SRAM
520 kB SRAM
Button
IO0
Wake up
IO35
Reset
USB to TTL
CP2104
Modular interface
UART、SPI、SDIO、I2C、LED PWM、TV PWM、I2S、IRGPIO、capacitor touch sensor、ADC、DACLNA pre-amplifier
On-board clock
40MHz crystal oscillator
Temperature and humidity sensor
DHT11
Reserved extension interface
21~22
Working current
About 150 mA
Sleep current
About 220 uA
Working temperature range
-40℃ ~ +85℃
Size&Weight
155.04*35*8.19mm(13.65g)
Power Supply Specifications
Power Supply Input
USB 5V/1A
Charging current
500mA
Battery Input
3.7-4.2V
Battery
3.7V lithium battery
Charge IC
TP4054
JST Connector
2Pin 1.25mm
USB
Type-C
Wi-Fi
Standard
FCC/CE-RED/IC/TELEC/KCC/SRRC/NCC (ESP32 chip)
Protocol
802.11 b/g/n(802.11n，speed up to150Mbps)A-MPDU and A-MSDU polymerization，support 0.4μS Protection interval
Frequency range
2.4GHz~2.5GHz(2400M~2483.5M)
Transmit Power
22dBm
Communication distance
300m
Bluetooth
Protocol
Meet bluetooth v4.2BR/EDR and BLE standard
Radio frequency
With -97dBm sensitivity NZIF receiver Class-1,Class-2&Class-3 emitter AFH
Audio frequency
CVSD&SBC audio frequency
Software specification
Wi-Fi Mode
Station/SoftAP/SoftAP+Station/P2P
Security mechanism
WPA/WPA2/WPA2-Enterprise/WPS
Encryption Type
AES/RSA/ECC/SHA
Firmware upgrade
UART download/OTA（Through network/host to download and write firmware）
Software Development
Support cloud server development /SDK for user firmware development
Networking protocol
IPv4、IPv6、SSL、TCP/UDP/HTTP/FTP/MQTT
User Configuration
AT + Instruction set, cloud server, android/iOSapp
OS
FreeRTOS
