DIY Hydroponics System using pH Sensor, EC Sensor, DS18B20, Ultrasonic, & ESP32

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Project Description:
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This is version 2 of my hydroponics system, which uses a pH sensor, EC sensor, DS18B20 waterproof one-wire digital temperature sensor, a pair of Gravity Analog signal isolators, the ESP32 WiFi + Bluetooth module, and Blynk application.

If you have watched the last video, you know I haven't changed anything on the hardware side. Everything looks the same.

I made some small changes in the programming and in the Blynk application.

In version 1 of the Hydroponics system, we couldn't change the sensor limits in real-time because all the limits were pre-defined in the code. To change the limits, we had to go into the program and update them each time.

But this time, you don't need to change the code. You can change the limits using sliders in the Blynk application. The limits you set here will be stored in the ESP32's EEPROM. So, if the controller turns off or resets, the limits you set won't change. This is a very powerful feature, especially for those who want to use this hydroponics system in multiple locations. Everyone can configure the system as they like. Let me show you how.

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ESP32 WiFi + Bluetooth Module (Recommended)
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SSD1306 Oled display
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DS18B20 one-wire digital waterproof temperature sensor
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Analog Signal Isolators
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EC/TDS Sensor
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DFrobot Gravity Analog pH sensor Kit V2
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