Multiple servos use

I just wanted to know if there’s a way of using multiple servos over serial or software serial connection. I can control one servo easily over USB serial but once I add another one, the phone won’t connect anymore to the arduino
if not, how can I control multiple servos with blynk?

What exactly do you mean you control a servo over serial? Blynk will communicate from the hardware to the server via USB, if you set it up that way, but servos are controlled via digital pins with a servo library. And with Blynk, you should be able to control as many as you have suitable pins and power for, all from your app.

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