When I'm running certain GPIO pins by adding a 24V supply and driving a transistor (TIP41C) to activate the relay, it works fine as long as the relay doesn't drive any power. However, the moment the normally open (NO) contact of the relay drives power, after some time, the touchscreen of M5Tough stops working, and the screen displays fully black

When I'm running certain GPIO pins by adding a 24V supply and driving a transistor (TIP41C) to activate the relay, it works fine as long as the relay doesn't drive any power. However, the moment the normally open (NO) contact of the relay drives power, after some time, the touchscreen of M5Tough stops working, and the screen displays fully black.

@ajb2k3
Please find the attached image for your reference. I'm using the Eval Kit of the VLD-1 Sensor, which requires a power supply of 5V. I suspect there might be an issue with the UART, as I am unable to read data on the Serial Terminal when connecting my sensor to the M5Tough UART Port-C (Blue). I have a feeling that perhaps their UART isn't receiving power or there's something wrong with it

Hello @felmue ,

No, I'm not using any level shifter. I'm simply connecting the UART Port-C (Blue) of my M5 Tough with the sensor.

I have a Distance Sensor V-LD1 and try to read Sensor data in M5 Tough through UART pins 13/14(RX/TX). But communication between M5Tough and Sensor isn't working properly.