@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:
LoRaWAN Module internal antenna analysis
There are 3 spikes around the following frequencies:

@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

@m5stack as well as 485 lol

Ok so it seems that Vlc will never be able to decode the http stream as it's not really a stream just consecutive jpeg images.
So I turned to rtsp instead and the micro-rtsp project.
I used the instructions here mgo-tech.com, to install Arduino IDE and ESP plugin (translated by google), take care to use correct pin mapping, I used that instruction as it is for M5Camera type b the same as I have.
Tried the CameraWebServer also, much nicer then the original software.

Followed instructions here hackster.io to get a http/rtsp server. Worked fine except the picture was the wrong way around for my application so I copied a few lines from the CamereaWebServer example to flip it vertical and Horisontal and lowered resolution to vga.
Works fine with Vlc but a bit more sensetive to fast movement then the http stream.

Why may you ask? Vlc got recording and is easily implemented in my project.

Have you tried erasing the flash, and reflashing a different firmware? Did you use the firmware burner in uiflow desktop to burn the firmware?

Hello Sam,

I have the Lora868 module;
Just a quick word of advice, if you want to use the module with the LMIC library then you -as mentioned in the article you pointed out to- have to solder the DI0 1 pad of the RA-01 to pin 34 of the M5stack connector.

The pin-out for the Lora868 module:

MISO - 19
MOSI - 23
SCK - 18
NSS - 05
RESET - 26
DIO 0 - 36
DIO 1 - 34 <-- this one is NOT connected when you get your Lora868 module, soldering needed!

If you want to know the physical pinout of the RA-01 (https://docs.ai-thinker.com/_detail/lora/spec/ra-01_picture.png?id=lora)

Greetings!

The encoder signal is displayed very accurately and also evaluated very precisely. Of course also with the NXT motors and EV3 motors. I will see that I make a video the days once again where you can see how precisely he drives the set values.
@liemph
I will then connect a NXT motor and run it on different values of the encoder! The GlideWheel PF and RCX motor controller for NXT or EV3 cannot be mounted directly on the old motors, because it is designed for the power motors (on these it is mounted with two pins), but you can mount it somewhere in the system on the shaft of the motor. So you can make an encoder motor out of any Lego motor.