smart-fish-tank

Parts Used

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• 1 x N-Channel MOSFET (IRF530N)
• 1 x NodeMCU V3.0
• 2 x Bi-Directional Logic Level Converter (JY-MCU)
• 1 x 12v to 5v Step Down
• 1 x 12V 6amp Power Supply
• 1 x Digital RGB Leds
• 1 x Project Box
• 1 x Power Jacks
• 1 x Toggle Switch
• Header Wires

Fritzing Sketch

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Wiring

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Logic Shifter 1 - 5v Side

Wire	Pin	Destination	Destination Pin
Green	VCC	Step down converter 5v	positive
Purple	GND	Step down converter 5v	negative
Blue	1*	Relay Module	IN1
Green	2*	Relay Module	IN2
Brown	3*	Relay Module	IN3
Purple	4*	Relay Module	IN4

Logic Shifter 1 - 3.3v Side

Wire	Pin	Destination	Destination Pin
Orange	VCC	NodeMCU	3v
Black	GND	NodeMCU	G
Blue	1*	NodeMCU	D6
Purple	2*	NodeMCU	D5
Gray	3*	NodeMCU	D0
Green	4*	-	-

Logic Shifter 2 - 5v Side

Wire	Pin	Destination	Destination Pin
Green	VCC	Step down converter 5v	positive
Purple	GND	Step down converter 5v	negative
Brown	1*	Terminal Block	4
-	2*	-	-
-	3*	-	-
-	4*	-	-

Logic Shifter 2 - 3.3v Side

Wire	Pin	Destination	Destination Pin
Orange	VCC	NodeMCU	3v
White	GND	NodeMCU	G
Orange	1*	NodeMCU	D2
-	2*	-	-
-	3*	-	-
-	4*	-	-

* numbering starts from next to the GND incrementing from left to right pin as there is no physical numbering on the board

Terminal Block

Pin	Function
1	White & Color LED VCC (Step down converter 12v positive)
2	White LED GND
3	Color LED GND (Step down converter 12v negative)
4	Color LED Signal
5	Switch Signal (connected to D7 on NodeMCU)
6	Switch Ground (connected to G on NodeMCU)

Fish Tank Light Wire

Color	Function
brown	White & Color LED VCC
Black	White LED - GND
Green	Color LED - Signal
White	Color LED - GND
Orange	Switch
Blue	Switch

Photo

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More photos and other assets available in the assits folder.