@powersoft said in m5 burner and firmware: @jimw Hello, have the same, but where to find it ? Cheers, Jan on the web page www.m5stack.com. go to support and then downloads and click on the M5Burner version for you computers operating system and load it. Once M5Burner loads up click the firmware in the firmware list on the left of the screen to download it. Plug in M5Stack or M5Stick and erase. At the top of the screen is a drop down box for devices, select your M5Stack or M5Stick and then click burn to write the firmware. Please not: the screen does not all ways auto scroll the messages and so you may have to manually scroll the message box to find out when writing of the firmware is complete.

@ajb2k3 I tried to reinstall Arduino IDE 1.8.9 and the library M5Stack, the only one included in my code but nothing changed, always the same error! Thank you for your help :(

Found the solution. a New clean install with the latest version. Now it's compiles well !

Got it that is what I thought but I wasn't sure and just thought I'd ask. Thank you both for your response.

Thank you for your proposal. Two questions: 1.) Using GPIO34 for TX on the GPS module does not cause any issues with the "Base M5Go Bottom"? As far as I understand the schematics, GPIO34 is linked to the max4466 on the "Base M5Go Bottom". Would it make sense to use GPIO36 instead, as this is linked to the GPIO-Connector Grove-B/Pin1? So the GPS-TX is accessible outside the M5 stack via this pin. Not a nice solution, as it needs 2x Grove connectors to access TX and RX. But it should work. 2.) I would rather modify the "Base M5Go Bottom" to increase the voltage level on the UART. Again, I do not find the resistors (240 Ohm) described in the original post in any schematic. I also did not find any document defining this UART as 1.5V interface... This is somehow misleading, as there is a 5V reference output on the Grove-C. I would expect 5V (or 3.3V, but not 1.5V). ==> Please confirm or correct me: Removing the 240 Ohm resistors from the Grove-C Connector on the "Base M5Go Bottom" should solve the problem as well. What will be typical the voltage level then? 5V or 3.3V? Thank you & best regards jpk

For sure. Purchase link: https://www.amazon.de/gp/product/B07DJ3J3MZ/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

Hey @liemph replied to your comment on youtube. If that didn't resolve your issue, let us know more about your issue, whether you have been able to flash the uiflow firmware successfully etc. feel free to post your other questions here

@multihelix Why not, but .. why?? ) It's nothing doing in this sketch )

@world101 Thanks alot. Blynk is working. I will try a BNO055.

Serial2.begin(115200, SERIAL_8N1, 13, 4) and you can use Serial2 in grove