So, Arduino is a mini computer or say, microcontroller. It doesn’t have enough power or capability to perform speech recognition (as of now). But lucky for me, my PCB board has a port to connect Bluetooth module. Means, I can connect our Arduino wirelessly to other devices. And I’m taking advantage of that thing. So, I will have to make an Android app that can perform “Speech to Text” operation using google API (requires internet) and after receiving the text, it will command Arduino over Bluetooth.


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