Week 10

 1/12/2025

I finalised the heating setup. Instead of using only one heater, I combined both the submersible rod heater and the side mounted heater in parallel, both controlled by Relay Channel 1. This improves heating efficiency and ensures faster temperature stabilisation.




7/12/2025

December update was submitted. 

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Reference

 FISH OPERATING RANGES Guppy: Temperature range: 22°C to 28°C pH range: 6.8 to 7.8 Goldfish: Temperature range: 18°C to 24°C pH range: 7.0 to 8.4 Tetra: Temperature range: 22°C to 27°C pH range: 6.0 to 7.5 HARDWARE CONNECTIONS Temperature Sensor (DS18B20): VCC connected to 3.3V GND connected to GND DATA connected to GPIO 4 A 4.7kΩ pull-up resistor is placed between DATA and 3.3V Ultrasonic Sensor (HC-SR04): VCC connected to 5V GND connected to GND TRIG connected to GPIO 18 ECHO connected to GPIO 19 through a voltage divider Relay Module (ESP32 Control Pins): Channel 1 (Heater) connected to GPIO 26 Channel 2 (Fan) connected to GPIO 25 Channel 3 (Drain Pump) connected to GPIO 33 Channel 4 (Fill Pump) connected to GPIO 32 OLED Display (I2C): VCC connected to 3.3V GND connected to GND SDA connected to P21 SCL connected to P22 I2C address 0x3C pH Sensor: VCC connected to 5V GND connected to GND Analog output connected to GPIO 34 Servo Motor: VCC connect...
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