Hi @felmue

Ok, but thank you for loking into it anyway.

Best regards
Kenneth

Hi @felmue

Thanks again.
Yes, indeed, it is set to high (3.3v between ground and gpio9). And that is the case both when connected to powersupply and pc.
I have an old FTD1232 (FT232RL I think it is), for uploading sketches to some old arduino pro mini boards. But I have never used it for debugging purposes, and have not used it for years. So not sure how to get that debug info out.
I have tried with the Python serial module, but non of the listed ports in device manager will allow me to connect.

The bord I have uploaded this to:
https://github.com/leCandas/M5Stamp-C3

gives the following error in the serial output, but continious executing the expected code:
22:52:51.175 > Build:Feb 7 2021
22:52:51.176 > rst:0x15 (USB_UART_CHIP_RESET),boot:0xd (SPI_FAST_FLASH_BOOT)
22:52:51.176 > Saved PC:0x40385a1c
22:52:51.176 > SPIWP:0xee
22:52:51.178 > mode:DIO, clock div:1
22:52:51.180 > load:0x3fcd6100,len:0x38c
22:52:51.182 > load:0x403ce000,len:0x6a8
22:52:51.185 > load:0x403d0000,len:0x236c
22:52:51.190 > SHA-256 comparison failed:
22:52:51.194 > Calculated: 86b6856493d23fe741a1623c3d149a38bdf91ca0101173d85f25c3fdb6d605ee
22:52:51.200 > Expected: e7bbd322b12b609ed444a0547cebdc54bbcf46aefed1e04449d9827791f3e8ab
22:52:51.203 > Attempting to boot anyway...
22:52:51.205 > entry 0x403ce000

But given the ones I havent put anything on is failing, I think that should be understood first.

Best regards
Kenneth

Hello @felmue

Well, that was also the beahviour I would expect.
so I just pulled the last "untuched" board out of the foil, and plugged it straight into a usb charger. But still nothing happens, when I press either buttons.
But yes, I had also tried the reset button with the other boards.

Then I plugged this new one into my pc, and it emidiatly worked.
Really strange. And unfortunatly not that usefull for the application I had in mind, if it only runs when hooked up to a pc.

Thanks for the reply, and for the input specs.
Kenneth

Hi M5Stack.

I have a sligt problem powering on the M5Stamp c3u devises I got.
I have a package of 5, and none of them (so far tested 4) seems to run the standart progam that comes on the board, when not pluged into a computer.
I.e., if I either hook its 5v and ground pins up directly, or if I hook it up to a usb charger. The same board however works fine when usb is connected to my computer.
I also have a M5Stamp c3 which works when hooked up to pins, and to external usb powersupply.

So far I have not installed the suggested drivers on my computer, since I managed to program this following example on my first attemt (and because I want to use platform IO and not the arduino IDE).
https://github.com/leCandas/M5Stamp-C3
But since the behaviour is also present on the bords I have not used, I dont think that is related.

Also what is the accepted voltage range on the 5v input, I cant seem to find it on the documentation page https://docs.m5stack.com/en/core/stamp_c3u?

Best regards
Kenneth

Hi Felix.

Thaks for your repply, and sorry for my late resonse.
I had some issues logging in again after I created my account.

Your links got the example code to at least build.
But once uploaded to the board I never get past "Connect Error" in the setup.

I have two hats, and two M5StickCPlus, and same issue on both.
So guess I still have some troubleshuting to do.

Hi.

When I follow the link for the arduino examples in the 8Servos Hat documentation pages I get an 404 error.
I.e. the links found on this page:
https://docs.m5stack.com/en/hat/hat_8servos_1.1

And in deed, they seems to be missing from the repository.

But in another local project (platform io), I can see that the folders exists in the .pio example section.
However there (in the 8SERVO_V1.1 example), it tries to include a HAT_8SERVO.h file, which seems to be missing from the example folder.

Is there a better location I should go to, to find this example?
Or has this file simply just been forgotten in a commit?
(Or am I simply missing a include library or somthing?)

I hope you can help getting me past this issue.