MP3 Trigger board FTDI interface

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1

I am working with an MP3 trigger board(Robertonics). I am powering it through the barrel connector(12v). I am trying to trigger the board using the FTDI interface. It does not appear to be functioning at all. I seem to be getting voltage across the TX and the GND, the RX and the GND pins. The voltage is 3.29 volts. Is this normal ? I am connecting it to an ESP32 dev C microcontroller. Also how should it be connected to the microcontroller to use the FTDI interface?

Regards,
Smitty.

2

I think it’s acting funky because it is double-powered…either disconnect the barrel jack or the 5v/GND on the FTDI side; just be sure to flip the switch into the corresponding one that remains

Then move on to the serial control if you’re wanting to use the FTDI MP3 Trigger Hookup Guide V24 - SparkFun Learn (you’ll send the commands form the ESP32)

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