Make DIY welding smoke extractor with lighting

Make illuminated DIY Welding smoke extractor

Look at the original

This can be changed to the ceiling fan and scattering light in the living room

Use Arduino,PC Fan and LED Light Bar , You can make a simple smoke extractor , To protect you from welding smoke .

step 1： Why do we need welding powder extractor

Excellent welding , Right ？ Make your own for our project PCB Very interesting , But when welding parts , We need to pay attention to some things . When we weld , We are around lead . Besides , Inhaling smoke can cause long-term health problems , For example, stomach disease , Memory and attention problems , Muscle and joint pain, etc . Besides , It is difficult for your eyes to weld parts to the circuit board , Welding under weak light will eventually permanently damage your eyesight .

therefore , When welding , It is very important to have enough light and smoke extractors to remove smoke . By using smoke extractors , You and the people around you will be protected from potentially dangerous smoke . In this video , We will use the old PC Fan and can be used to replace the lamp 12V LED Lamp strip fabrication and welding smoke extractor .

step 2： circuit

therefore ,Arduino Nano It's basically the brain of this project , But you can use anything Arduino plate . The input voltage is connected to a 7805 pressure regulator , The regulator will VIN Convert to stable 5V DC Power Supply . Here are two potentiometers connected to 5V, Will be used as a voltage divider . The output of the potentiometer is respectively connected to the analog pin A0 and A1.

The following are two that are set to act as switches MOSFET. You can open Arduino The pin of 9 And pins 10 To open them up . ad locum , I want to point out , Pin 9 and 10 yes PWM Pin , This means that we can go to MOSFET send out PWM The signal .

ad locum , You can see a LM 741 The comparator IC, It can be used to power any other device you want . This is almost the whole circuit .

step 3：PCB Layout

Once the circuit is completed and tested , I use it. Altium Designed a small PCB, Where I can place all the parts neatly . ad locum , You can see that the wiring is completed on both sides of the circuit board , This means that it is double PCB.

step 4： complete PCB

When you have all the parts and PCB when , They can be welded together . Weld all parts on the circuit board , And make sure to check the polarity of the parts . This is after welding PCB The appearance of the .

step 5： code

Let's start coding now . This will be uploaded to us when we finish the process Arduino Code for . It seems quite simple , isn't it? ？ In short , This is easy. ！

const int ledPin =  13; 
const int light = 9; 
const int fan = 10; 
int pot1 = 0; 
int pot2 = 0;  
   
void setup() 
{    
pinMode(ledPin, OUTPUT);   
pinMode(A0, INPUT);   
pinMode(A1, INPUT);   
Serial.begin(9600); 
} 

void loop() 
{    
pot1 = map(analogRead(A0),0,500,0,255);   
pot2 = map(analogRead(A1),0,500,0,255);   
analogWrite(light, pot1);   
analogWrite(fan, pot2);   
delay(50);   
Serial.println(pot1);   
Serial.println(pot2);   
Serial.println(""); 
} 

First , We will declare some variables , Then assign them to pins that are often used throughout the project . In the setting function , We will declare the pin pattern , It essentially tells Arduino Is the pin an input pin or an output pin .

We get analog readings from two potentiometers , In a loop function , We map these readings to fall on 0 To 255 Values in range . In the next line , We will open and close the connection to Arduino Pin 9 and 10 Of MOSFET. So , We will output PWM The signal , Its value is generated from the row before them .

Just turn the potentiometer , We can not only control LED The brightness level produced by the light bar , You can also control the speed of fan rotation . Pipes or outlets can be used , The fan can be connected to the pipe or outlet , To ensure that steam does not remain in the room .