labview arduino interface

[Chowdhury_Milon]

Hello everyone,

I am facing difficulties to operate pumps using Arduino UNO circuit and relay. I am using Arduino UNO circuit, Arduino relay switch and Pump (230V AC). I want to run the pumps for specific time period. when I test the circuit and relay without pumps, it works good but when I add the pumps, the relay can't stop the pumps after the specific time period. Here I have attached some pictures for clearing the problems.

I can't understand whether this is software or hardware problems....

[crossrulz]

Since it works without the pumps, it sounds like a hardware issue.  If I had to guess, it looks like the Arduino is shutting off when the pumps are on.  This would point to a power issue.

[Chowdhury_Milon]

Thanks for your quick reply but I can't find out the hardware problem...   😞  😞  😞 

[Chowdhury_Milon]

Hello Sir,

I want to control the pH level of a solution using PID controller. I am using stock pH solution and pump for this. I have made a code also but it doesn't work well. I have attached my code here.

Would anyone check and find out the problem, please?