LILYGO TTGO T-Higrow BEM280 ESP32 WiFi Bluetooth DHT11 Soil Temperature and Humidity Detection Electrolyte Sensor Module

Product main upgrade function attributes
1:Change the original ESP32 module to a single ESP32 chip.
2:The charging IC is changed from the original TP5400 to TP4054.
3:The original MICR seat is changed to TYPE-C.
4:The original normal power supply mode is changed to the button sleep wake-up mode (or the customer does the timing wake-up by himself).
5:The size of the board is 45MM smaller than the previous length, and the width is increased by 2.54MM
Added part
1:Added sleep button wake-up function (IO35)
2:Added the function of testing soil salinity (CD4060BM+TL034IDR)
3:Increase the intensity test of light (BH1750FVI)
4:Reserved external device expansion (single bus serial port IIC—-21~22)
Advantage
The battery life is much longer than before. In the case of testing moisture, you can test the soil salt and photosynthetic absorption, reasonable fertilization and proper sunshine.
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
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:DHT12
Reserved extension interface:21~22
Working current:About 150 mA
Sleep current:About 220 uA
Working temperature range:-4OC~+85C
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:(Note:battery is not includes)
Charge IC:TP4054
JST Connector:2Pin 1.25mm
USB:Type-C
Wi-Fi:Description
Standard:FCC/CE-RED/IC/TELEC/KCC/SRRC/NCC (ESP32 chip)
Protocol:802.11 b/g/n (802.11n, speed up to 150Mbps) A-MPDU and AMSDU polymerization, support 0.4uS Protection interval
Frequency range:2.4GHz~2.5GHz(2400M~2483.5M)
Transmit Power:22dBm
Communication distance:300M
Bluetooth:Description
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:Description
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:Pv4, IPv6, SSL, TCP/UDP/HTTP/FTP/MQTT
User Configuration:AT+Instruction set, cloud server, android/iOSapp
OS:FreeRTOS
Package includes
1 x T-Higrow ESP32 WiFi Bluetooth Module