ESP32-C6-LCD-1.47 LDO overheat

[peterzhenghj]

CircuitPython version and board name

Adafruit CircuitPython 9.2.4 on 2025-01-29; Waveshare ESP32-C6 LCD 1.47 with ESP32-C6FH4

Code/REPL

# NO code to run

Behavior

After the flash restart, I noticed that the area of the low dropout regulator (LDO) feels overheated when touched.
However, I only have one unit available, so I am not sure if this issue is unique to my device.
Interestingly, when I flash the factory images, there is no overheating situation.

Description

No response

Additional information

Waveshare product wiki

[kylefmohr]

I was able to recreate this (any excuse to use my thermal camera!) but I question whether this is specifically a CircuitPython issue, or if this more relates to the fact that Python is an interpreted language. I would theorize that you would see the same amount of heat if you created a program in C/C++/Arduino's language which was always running at 100%.

Nevertheless, here are the temps I found.

First with the factory image loaded, I saw it max out at about 107°F (~42°C), and the LCD capped out around 92°F (~33°C).

Then once I flashed CircuitPython onto the device, it quickly climbed to 140°F (~60°C), as did the LCD screen.

and after leaving it idle for a few hours (Just waiting at the REPL prompt for CircuitPython), the device was at about 160 F (71 C)

Here's a video of the temperature climbing as the device is plugged into power

20250209-075540.mp4

But I will just say one more time, I don't think CircuitPython is to blame for this.

[tannewt]

Please talk to Waveshare about this. Maybe there is some pin state that needs to be set in CircuitPython.

[peterzhenghj]

Please talk to Waveshare about this. Maybe there is some pin state that needs to be set in CircuitPython.

Yes I will, thank you sir.