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Schematic and Parts listSchematics:Figure 1: Schematic for the irrigation controller internal circuity. Figure 2: Schematic for electrical components and clock that control irrigation controller.Figure 3: Schematic for irrigation controller interface.Figure 4: Schematic for switch and terminal for the sensors and 12-volt devices.Parts list:Name Qty.Adafruit DS3231 Precision RTC Breakout 112mm Diameter - 3V Lithium Coin Cell Battery1UBEC DC/DC Down (Buck) Converter - 5V @ 3A output 1M1.6 - 0.35 x 10 - Stainless Steel Phillips Pan Head Machine Screw1Electrical Project Junction Box IP65 Waterproof DIY ABS Power Electronic Outdoor Case Enclosure Gray (7.9 x 5.9 x 4 inches)1Hook-up Wire Spool Set - 22AWG Stranded-Core - 6 x 25ft1M3 x 10mm 316 Stainless Steel Phillips Pan Head Machine Screws Fasteners 1M3 3mm Female Thread Hex Metal Nut Fastener Silver Tone1 TIP 120 Darlington transistors3Arduino MEGA 2560 R3 microcontroller 1LDC1602 Module (with pin header)1Buttons (Large)5Key cap(White, Yellow, Blue, Green, and Red)5LED (Red, Blue, Green, and Yellow)41k resistors72k resistors1220 resistors54.7k resistors1Adafruit Perma-Proto Full-sized Breadboard PCB32-pin JST SM Plug + Receptacle Cable Set43-pin JST SM Plug + Receptacle Cable Set4Diode Rectifier - 1N40073VH400 Soil Moisture Sensor 1ECH20 ED-5 Soil Moisture Sensor1Optomax Digital Liquid Level Sensor1Waterproof DS18B20 Digital temperature1Adafruit Push-button Power Switch Breakout112VDC Brass Solenoid Valve, Normally 2 ................
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