It's been almost a year since I last did an Arduino-related project.
I know that this type of project is pretty late for 2021, but I just had no time to make, shoot & edit something too time consuming due to my workload.
I only have a few hours of free time each day and when I'm not working, I'm either sleeping to rest my eyes or just watching anime or idol shows to chill while waiting for the next batch of work to do.
I know I could've just dedicated a few days to finish the pending videos, but paying bills needed to be prioritized and sometimes I just don't feel like doing anything.
Alright! Now that my short rant is done...
This video contains a step-by-step procedure on how to make a pretty cheap DIY No Touch Alcohol Dispenser using Velostat as a pressure-sensitive switch and an Arduino NANO.
Using a pretty basic code, we can do the same thing like what some of the aftermarket alcohol dispensers do.
By using the velostat as a pressure-sensitive switch, we can make sure that only a human can activate it.
PS. You can use a better suited or better sealed container for the alcohol if you want to. I'm planning to do that as well when I find some.
#include<Arduino.h>intveloStat=A0;intPump=2;intSpeaker=3;voidsetup(){Serial.begin(9600);pinMode(Pump,OUTPUT);pinMode(Speaker,OUTPUT);}voidloop(){intsensorValue=analogRead(A0);Serial.println(sensorValue);delay(2);if(sensorValue<50){tone(Speaker,1500,100);//Speaker Module Generates a Tone for 100 ms.delay(3000);//Waits for 3 secs.tone(Speaker,1000,300);//Speaker Module Generates a Tone for 300 ms.delay(1000);//Speaker Module Would Stop for 1 sectone(Speaker,1000,300);//Speaker Module Generates a Tone for 300 ms.delay(1000);//Speaker Module Would Stop for 1 sec.tone(Speaker,1000,300);//Speaker Module Generates a Tone for 300 ms.delay(1000);//Speaker Module Would Stop for 1 sec.digitalWrite(Pump,HIGH);//5v Relay Would Turn on the Pumpdelay(200);//5v Relay Would Turn on the Pump for 200 ms.digitalWrite(Pump,LOW);//5v Relay would Turn OFF the PumpdigitalWrite(veloStat,LOW);//Velostat would be Deactivated & Not Receive Signaldelay(3000);//Velostat would be Deactivated & Not Receive Signal For 3 secs.}else{digitalWrite(LED_BUILTIN,LOW);digitalWrite(Pump,LOW);}}
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