Color	BME280 CH9102 BME280 Kit CH9102 DHT11 CH9102 DHT11 Kit CH9102
BME280 CH9102 BME280 Kit CH9102 DHT11 CH9102 DHT11 Kit CH9102

Description
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Item specifics

Brand Name lilygo
Certification None
Compatible Audio & Video Equipment Style Amplifier
Origin CN(Origin)
Dimensions (WxHxD)) 195*31*20mm
Package Yes
Model Number ESP32 Rev1
Weight 30g
T-Higrow BME280 CH9102 Q221
T-Higrow BME280 Kit CH9102 Q222
T-Higrow DHT11 CH9102 Q128
T-Higrow DHT11 Kit CH9102 Q129

Product Description

Note: Since BME280 already includes temperature and humidity sensor, it already includes the function of DHT11, we have removed the DHT11 sensor on the BME280 version to reduce costs .

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
Modular interface	UART、SPI、SDIO、I2C、LED PWM、TV PWM、I2S、IRGPIO、ADC、DACLNA pre-amplifier
On-board clock	40MHz crystal oscillator
Temperature and humidity sensor	DHT11 or BME280
Reserved extension interface	21~22
Working current	About 150 mA
Sleep current	About 220 uA
Working temperature range	-40℃ ~ +85℃
Size&Weight	155.04358.19mm(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

Copy Links For more details: https://github.com/Xinyuan-LilyGO/TTGO-HiGrow 3D Shell Print Download Link： https://www.tinkercad.com/search?category=tinkercad&q=HiGrow

T-Higrow Lora Shield 868MHz / 915MHz Function Expansion Board link：

https://www.officematics.com/item/4001127058776.html

T-Higrow Shell and Motor：https://www.officematics.com/item/1005003500948957.html

Product Detail

ALG 3000mAH 18650 battery could make ESP32 working. This capacitive soil moisture sensor differs from most of the resistive sensors on the market, using capacitive sensing principle to detect soil moisture. It avoids the problem that the resistance sensor is easy to corrode and greatly prolongs its working life.

S18B20 waterproof temperature sensor is used for t-higrow and t-watch with t-grove interface.

For example, it can be used with t-higrow to test the temperature and humidity of flowerpot soil and environment, as well as the water temperature of fish tank when raising fish. Of course, it can also test other temperatures as long as you want.