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2.1. Inverter Control Button Design
Fig. 1: Inverter Control Button Block Diagram
The Forward Start (F) control button is connected to Port C Arduino on PIN C pin no 0, the reverse start control button is connected to PIN
C pin no 4. While the stop control button is connected to pin/leg no. The speed up control button is connected to Arduino on Port C pin C
pin no 6. The speed down button is connected to PIN C pin no 7.
2.2. Relay Driver Design.
The Relay Driver in this study is used as a connecting medium between Arduino and a 3 phase inverter. The relay driver converts a 5 Volt
DC voltage from Arduino into a 24 Volt DC voltage which is used to control the start-stop of a 3 phase inverter.
Fig. 2: Inverter Relay Driver Circuit Diagram on Arduino
2.3. Display Design with LCD
LCD (Liquid Crystal Display) is a viewer module that is widely used because of its attractive appearance. The most widely used LCD
today is the refurbished M1632 LCD because the price is quite cheap. LCD M1632 is an LCD module with a 2x16 display (2 rows x 16
columns) with low power consumption. The module is equipped with a specially designed microcontroller to control the LCD.
Fig. 3: Address Arrangement on 16x2 LCD
The starting address of the character is 00H and the ending address is 39H. therefore the initial address in the second line starts at 40H. If
you want to put a character in the 2nd row of the first column, then the LCD address must be set at 40H address.
Fig. 4: LCD circuit on Arduino
2.4. Software Design
ARDUINO
Forward Start
( F )
Start
Mundur
Stop ( S )
Speed Up
Down Speed
Inverter Control
PINC
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