ESP32 WIFI Bluetooth DHT11 Temperature and Humidity Soil Module

You can now easily measure temperature, humidity, soil moisture and light intensity remotely via Wi-Fi with the ESP32 HiGrow-type Soil Sensor Board from PMD Way.

This interesting board is designed to be placed into soil, and uses a capacitive soil sensor to measure moisture - along with a light sensor and DHT11 temperature/humidity sensor.

The host microcontroller is the popular ESP32 series and has a full USB interface via a CP2104. Power is provided by an 18650 LiPo battery (not included) and you can charge thi The battery life is much longer than before. In the case of testing water, you can test the soil salt and photosynthetic absorption, reasonable fertilization and proper sun exposure.

This capacitive soil moisture sensor is different from most resistive soil moisture sensors on the market, and uses the capacitive sensing principle to detect soil moisture. The problem of the resistance sensor being easily corroded is avoided, and its service life is greatly extended.

ESP32 Temperature and Humidity Soil Module Application:

1. Smart Garden
2. Environment Condition Management

ESP32 Temperature and Humidity Soil Module Specification:

1. Chipset: ESPRESSIF-ESP32 (Wi-Fi and Bluetooth) 240MHz Xtensa® LX6 32-bit single / dual-core microprocessor
2. FLASH: QSPI flash 4 MB
3. SRAM: 520 kb SRAM
4. Button: IO0
5. To wake up: IO35
6. USB to TTL: CP2104
7. Modular interface: UART, SPI, SDIO, I2C, LED PWM, TV PWM, I2S, IRGPIO, capacitor touch sensor, ADC, DACLNA preamplifier
8. clock: 40MHz crystal oscillator
9. Temperature and humidity sensor: DHT11
10. Working current: 150 mA
11. Sleep current: About 220 uA
12. Working temperature range: -40 ℃ ~ + 85 ℃
13. Power Input: USB 5V / 1A 
14. Battery Charge IC: TP4054
15. Connector: Type-c
16. Protocol Wireless: 802.11 b / g / n (802.11n, speed up to150Mbps)
17. Frequency range: 2.4GHz ~ 2.5GHz
18. Protocol Bluetooth: Complies with Bluetooth v4.2BR / EDR and BLE standard
19. Dimension: 110 * 57 mm