Neon light flickers back and forth at the same frequency, and the lights increase and darken intermittently. As shown in the video below, the brightness of Neon light changes from light to dark and then to light every other lamp. This is controlled by the basic resistance.

For this project, I used :

1.Arduino Uno

2. 7 x Red LED

3. 4 x 1k ohm and 3 x 100 ohm

4. 8 x M-M Jumpers

5. Breadboard

6. Arduino IDE

The final Connection and effect situation:

Here is so of the basic code I used :

set up all the LEDs as OUTPUT

pinMode(led_1, OUTPUT); p

inMode(led_2, OUTPUT);

pinMode(led_3, OUTPUT);

pinMode(led_4, OUTPUT);

pinMode(led_5, OUTPUT);

pinMode(led_6, OUTPUT);

pinMode(led_7, OUTPUT); }

1 digitalWrite(led_1, HIGH); digitalWrite(led_2, LOW); digitalWrite(led_3, LOW); digitalWrite(led_4, LOW); digitalWrite(led_5, LOW); digitalWrite(led_6, LOW); digitalWrite(led_7, LOW); delay(100);

2 digitalWrite(led_1, LOW); digitalWrite(led_2, HIGH); digitalWrite(led_3, LOW); digitalWrite(led_4, LOW); digitalWrite(led_5, LOW); digitalWrite(led_6, LOW); digitalWrite(led_7, LOW); delay(100);

3 digitalWrite(led_1, LOW); digitalWrite(led_2, LOW); digitalWrite(led_3, HIGH); digitalWrite(led_4, LOW); digitalWrite(led_5, LOW); digitalWrite(led_6, LOW); digitalWrite(led_7, LOW); delay(100);

3 digitalWrite(led_1, LOW); digitalWrite(led_2, LOW); digitalWrite(led_3, HIGH); digitalWrite(led_4, LOW); digitalWrite(led_5, LOW); digitalWrite(led_6, LOW); digitalWrite(led_7, LOW); delay(100);

2 digitalWrite(led_1, LOW); digitalWrite(led_2, HIGH); digitalWrite(led_3, LOW); digitalWrite(led_4, LOW); digitalWrite(led_5, LOW); digitalWrite(led_6, LOW); digitalWrite(led_7, LOW); delay(100);

Different from the last lab, we use the rotary encoder to control the stepper motor, the steeper motor will rolate at the same frequency and direction as the rotary encoder.

We used the following components:

1 x Elegoo Uno R3

1 x 830 tie-points breadboard

1 x rotary encoder module

1 x ULN2003 stepper motor driver module

1 x Stepper motor

1 x Power supply module

1 x 9V1A adapter

9 x F-M wires

1 x M-M wires

• 

The final connection:

In the lad, we use the remote to control the stepper motor with two different buttons to control stepper motor run different ways.

We used the following components:

1 X Elegoo Uno R3

1 X 830 tie-points breadboard

1 X IR receiver module

1 X IR remote

1 X ULN2003 stepper motor driver module

1 X Stepper motor

1 X Power supply module

1 X 9V1A Adapter

9 X F-M wires / 1 X M-M

We add a receiver and a remote from last lab. We use the following code, these could help the remote to control the run way of the stepper motor.

The final connection situation.

In this lab, we successfully run the stepper motor in two ways with same slow frequency.

At first, we used the following components:

1 X Elegoo Uno R3

1 X 830 tie-points breadboard

1 X UlN2003 stepper motor driver module

1 X Steeper motor

1 X 9V1A Adapter

1 X Power supply module

6 X F-M wires

1 X M-M wire

After finished the connection, we upload the following code:

The successful lab connection after upload code:

From this lab, we try to control the small DC motor with an uno R3 and a transistor, first,we use the following components:

1 X Elegoo Uno R3,

1 X 830 tie-points breadboard

1 X L293D IC

1 X Fan blade and 3-6v motor

1 X M-M wires (Male to male jumper wires)

1 X Power Supply Module

1 X 9V1A adapter

We used the following code

The finally connect situation pictures

The materials we used: 1 elegoo Uno R3, 1 joystick module and 5 f-m dupont wires.

The materials we used: 1 elegoo Uno R3, IR receiver module, IR remote, 53f-m DuPont wires.

The materials we used: 1 elegoo uno R3, 1 DHT11 temperature and humidity module and 3 f-m dupont wires.

The materials we used: 1 elegoo uno R3, 3 f-m dupont wires and 1 water level detection sensor module.

The materials we used: 1 elegoo uno R3, HC-SR501 PIR motion sensor and 3 f-m dupont wires.