It turns out that that particular PCB was not working correctly, tried other ones from the same batch and all of them worked as expected. Thanks for the input, will troubleshoot anyway to see if I can see which component is at fault here as at first glance the 3.3V rail seems to work fine.

Looking at a few reference designs I've come up with the following design and ordered an assembled PCB. My goal was a simple PCB with USB-C, leveraging the C3's built-in JTAG capabilities to avoid a USB-to-Serial chip. I thought I had everything in order, but when plugging this in the computer doesn...

it is not required. Devkits tend to have one as initially we weren't sure if the USB-serial-JTAG device would work. Additionally, the USB-serial-JTAG device acts a little bit different than real USB-serial converters if you use light sleep (for now, it's an issue we're looking into) or deep sleep. ...

I'm designing my first ESP32 PCB and want to use a C3(-MINI). I'm a bit confused though looking at the C3 DevKit schematic , as it has a CH2102 USB-to-UART bridge: is that required or could I do without one? If it's not required, why is it added? I can only think of the additional RTS/DTR pins so au...