M5Fire - No USB COM.

JLab

Hello,

I've just received my M5Fire, followed the instructions about the driver/arduino IDE libs & boards but I'm still not able to connect to the device (Windows 10x64)

No Com port detected, tried with 2 differents cables (USB A<->USB C). I also tried to turn the C side of the cable (advice seen on the forum).

Any idea?

Thank you.

ajb2k3

@jlab

I tried several NEW leads before I found one that works.
Try a capacitor between rst and gnd
"Phone Charger" leads do not work.

JLab

@ajb2k3 , thank you for your answer.

How did U manage to connect the capacitor?

If i unscrew the back of the M5Fire, I do get access to the 2x15 connector. but there is no room to connect a capacitor and screw the back. If I do not screww the back, module won't start (even with USB plugged)

ajb2k3

~~You just push it into the RST and GND pin in the base.~~ this only works on the core.

Yes looks like you need to solder it to the pins in the base.
Have you installed the CP2x driver yet?

As a last try you will need a USB to UART adapter which M5Stack has now just added an approved model to their store.

JLab

Yes drivers are installed.
I would like to avoid soldering as it is under waranty. The issue that can be fixed with a capacitor is on all FIRE models?

If not I prefer to send back the module and order another one.

One more question : Is it normal that the screen part of the module is not able to boot even with USB plugged in if back cover is not stacked?

Dreitagebert

I solved the same problem by putting a capacitor between Gnd and Gpio0. And i turned the USB-Plug many times around.
But now it starts as it should.

I took the backside off and plugged the capacitor in without soldering. (Maybe therefor i had to try several times)

Very strange and not funny for people with lesser frustration tolerance.

ajb2k3

@dreitagebert said in M5Fire - No USB COM.:

Very strange and not funny for people with lesser frustration tolerance.

I have a very low frustration tolerance.

m5-docs

JLab

My case (Fire version) does not allow me to reach the internal connector from the outside.

I've ordered a grey "version".