Hello. I am working on my first arduino project with my son. We are building a Vorpal Robot. I have successfully programmed the nano for the robot and the controller. I am trying to configure two HC-05 Bluetooth modules (one slave & other Master). I wired up the Arduino Uno following the attachment…

Serial Monitor not responding

ieee488 April 6, 2018, 2:54pm 3

Robin2:
Are you sure your Bluetooth module can work with 5v - many can only take 3.3v?

There is another recent post on this forum where that person reported that a voltage divider of 1K/2K must be used for the HC-05 RX pin.

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