Do you want to program the goplus in arduino or uiflow? there is a uiflow example on the docs page https://docs.m5stack.com/#/en/module/goplus if you wish to use arduino please check out this video https://www.youtube.com/watch?v=V8rmir-Tmy8 and substitute ir pin with gpio 13

I look forward to hearing about your hacking ideas. Best of luck :)

Currently one does not exist please contact M5Stack directly using this page https://m5stack.com/pages/contact-us The modules connect via SPI. this page may help you build a compatable US version https://docs.m5stack.com/#/en/module/lora

@sheepdog said in flash m5stack fisheyes camera ov2640: Which esp-idf version did you use? You can get the Version with: $ git describe In the begining with esp-idf v4.2 And with esp-idf 3.3 realease can't finish "build" Adding ESP-IDF tools to PATH... Not using an unsupported version of tool xtensa-esp32-elf found in PATH: esp-2020r1-8.2.0. Not using an unsupported version of tool cmake found in PATH: 3.16.4. Not using an unsupported version of tool openocd-esp32 found in PATH: v0.10.0-esp32-20200406. Not using an unsupported version of tool ninja found in PATH: 1.10.0. C:\Users\oxyrace.espressif\tools\xtensa-esp32-elf\1.22.0-80-g6c4433a5-5.2.0\xtensa-esp32-elf\bin C:\Users\oxyrace.espressif\tools\esp32ulp-elf\2.28.51.20170517\esp32ulp-elf-binutils\bin C:\Users\oxyrace.espressif\tools\cmake\3.13.4\bin C:\Users\oxyrace.espressif\tools\openocd-esp32\v0.10.0-esp32-20190313\openocd-esp32\bin C:\Users\oxyrace.espressif\tools\mconf\v4.6.0.0-idf-20190628 C:\Users\oxyrace.espressif\tools\ninja\1.9.0 C:\Users\oxyrace.espressif\tools\idf-exe\1.0.1 C:\Users\oxyrace.espressif\tools\ccache\3.7 C:\Users\oxyrace.espressif\python_env\idf3.3_py3.8_env\Scripts [836/837] Linking CXX executable camera.elf FAILED: camera.elf cmd.exe /C "cd . && C:\Users\oxyrace.espressif\tools\xtensa-esp32-elf\1.22.0-80-g6c4433a5-5.2.0\xtensa-esp32-elf\bin\xtensa-esp32-elf-g++.exe -mlongcalls -nostdlib @CMakeFiles\camera.elf.rsp -o camera.elf && cd ." esp-idf/main/libmain.a(main.c.obj):(.literal.app_main+0x18): undefined reference to led_brightness' esp-idf/main/libmain.a(main.c.obj): In function app_main': D:\ESP32\esp-idf\examples\m5stack\wifi\wifi_sta\build/../main/main.c:89: undefined reference to `led_brightness' collect2.exe: error: ld returned 1 exit status ninja: build stopped: subcommand failed. ninja failed with exit code 1

I cant be 100% over this but it looks to be stock old firmware. I broke mine this week so been researching how to build a new one using updated firmware and TMC2209 drivers.

@jnicol actually , our screen supplier test data, the screen, allow max brightness 853nit. maybe you could modifying the program, the display effect in the sun will be improved

@jirivanerka Those Pin provided user to design electronic circuit. so default they not connect anything. you can solder they connect to anywhere.

I can't make it work with a USB-C to USB-C cable either (running on a MacBook Pro 16' with Catalina). Using a USB-C to USB-A hub works....

That did the trick. Thank you

@cepics Is feasible, but we have not done any example in this regard

@lukasmaximus said in m5stack + sim800l: Hi @Nicolaf899 I cannot help you here as I was not able to get the sim800l working myself, please refer to the recent topic http://forum.m5stack.com/topic/1785/sim800l-gprs-mqtt I pasted some links there with information about sim800l. Where possible please check if there is a discussion going on about this module and ask your questions there instead of duplicating a thread, thanks okk thank you

Same here, I can get a connection to the network, but no ping or anything. Did you get it to work @Procrasto ? I see the unit is out of stock on the M5 store and can not find anybody on the net with a success story... Could it be this unit is not capable of working in europe?

I have the same problems. My experience: AT+CFUN=1 +CREG: 2 +CGREG: 2 OK +CEREG: 2 +CGEV: ME PDN ACT 1 +CREG: 1 ^MODE: 17,10 +CREG: 1 +CEN1: 1,204 +CEREG: 1 +CIREPI: 0 +CNEMS1: 0 at+cops=? +COPS: (2,"T-Mobile NL","T-Mobile NL","20416",7,1),,(0-4),(0-2) OK AT+IPSTART=1,"TCP","185.78.197.71",3000 +CME ERROR: 30 I too get +CME ERROR: 30 on all ping actions. The sim is ok, I get data when I use it in a smartphone. Is anybody out there successfully transmitting data with this unit? any help would be greatly appreciated!

I read on stack overflow you need to use a 3rd party library for this : WolfSSL Link to Stack Overflow

I used an antenna analyzer and this is what I got: [image: 1583919274876-lorawan_internal_antenna-resized.jpg] There are 3 spikes around the following frequencies: 610 MHz 820 MHz 2300 MHz

@skink and @ajb2k3 Thanks for your great help, this is a good solution. I think I have to use 3,7V and not 5V because it is battery pack input.

I looked around for some examples for this too but so far have found none, here is the datasheet if it helps https://m5stack.oss-cn-shenzhen.aliyuncs.com/resource/docs/datasheet/module/MAX3421E_en.pdf