@Ruud-Noordermeer
Recently a bug was fixed in userdemo firmware that images cannot post to EZData2. Maybe you can try it again?

@dahult
I just tried these examples and all three can be compiled successfully. Maybe it's your library version problem? Have you installed the board manager correctly?

I created an official issue there:
https://github.com/m5stack/M5Atom/issues/87

@mrtof
Have you tried using other GPIO as serial port? As far as I know, the default serial is internal, and there may be other data interference.

@kuriko I bought it at the M5 store and as returning the item is impossible, I will have to throw it in the trash. Here's a tip NOT to buy the AtomS3, because from what I've seen, it's a chronic problem with the device and a lot of people have the same problem

Hi @Al4085
Are you talking about this example?
https://github.com/m5stack/ATOM-ECHO/tree/master/examples/StreamHttpClient_ECHO
As far as I know, this is indeed a program for streaming audio files. It has a URL that defines the music file and a buffer used for streaming.

Hello @ivanurwin

the communication between PC and M5AtomS3U happens via native USB (without an external USB/Serial IC) which cannot be used with UIFlow2 UART blocks. UIFlow2 UART blocks define GPIOs for RX and TX (among others) which do not exist for a native USB connection.

The only UIFlow2 block I see which will read data from the PC via a native USB connection is prompt for text with message.

Thanks
Felix

@mgrouch There are many ways.
My current method is to use Lego technic plates but there are 3d printed mounts or on boards.

Hi @mgrouch
Maybe you could try the Arduino built-in analogRead function?
https://deepbluembedded.com/esp32-adc-tutorial-read-analog-voltage-arduino/

@kuriko Yes I suppose.
But it's confusing since it's clearly written on product page !

I will wait and hope :)

Hello @johseffer

yes. See here.

Thanks
Felix

@ivanurwin get yourself M5Burner, log in to it with same credentials as for uiflow2, then find newest firmware for your device to burn it in to it via m5Burner

It might be the PWM that makes problem but often its the brushes in the motor that causes the disturbance (sparks during operation). Test if you still have the problem with a resistor instead of the motor. If the problem is gone with resistor then it's the motor. And YES, this is a EMC issue.
Try some filtering on your DC motor by adding 100nF capacitors on it. That means from DC+ to motor case and from DC- to motor case (known as Y configuration). Very important: As close as possible to the motor with leads as short as possible! Solder them direct on the motor. If this not help add another 100nF between + and - (known as X configuration) and also a inductivity of a few µH in the DC+ and DC- wire (this can be a wire that goes a few times trough a small ferrite torroid).

Edit:
"As my teachers always said, EMC is magic......."
-> capacitors and inductors are the magic spells!

@mgrouch Hi there, the M5Unified library has a calibration routine that works well. See the IMU example in the library, and make sure to read all of the comments carefully.

You press the Atom BtnA (screen) and it will calibrate for 10 seconds, enough to do one axis at a time. You are best to calibrate the accelerometer, gyro and magnetometer separately for best results.

Personally I modified the example so that the calibration starts on press BtnA, and ends on the second press of BtnA. i.e. no 10 second countdown. This way I can take my time and calibrate all 3 axes of each sensor (accl, gyro, or mag) in one continuous movement.

@teastain Thanks for the reply. I meant the one titled “Thermal” (without 2) and there is only one module.

Anyway, I solved my initial problem - it was related to not setting up the ext_i2c correctly. I also used a mix of M5Unified and M5AtomS3 libraries because out of the box the FastLED that is referred to from M5Unified does not compile and fails with a static pin value check at compile time. I solved all this (and learned a lot).

Now the only problem I have is: how do I connect the two small M5 modules with a male to male adapter. The grove cable works fine for me but I want a zero length grove male 2 male connection so I can print a 3D case and put both modules into it.

In case someone else runs across this. I had a very similar issue with the Atom S3 Lite not working with the PWM Kit. There is a voltage select 0ohm resister link for the PWM driver. It's labeled 5v and 3v3 just above header pin 21. As shipped the 3v3 is bridged to the center pin. This powers the PWM driver chip off the 3.3v pin of the atomS3. This causes lockups and very intermittent wifi. I removed the resister and bridged 5v to the center pin. All issues went away and everything works normally.

@toastedcode did you figured out programming m5stack tough unit. I am newbie and looking for some help on programming it by block diagram in webui

Specifically looking to connect rs485 sensor output from my water level device and pressure transducer thenconvey data by matt to server

Any help or step by step programming video would be great

@felmue Yes. This time I erased first, and it completed successfully. I reset it afterwards, then put it into download mode again (flashing green led) and then burned the Atom S3R UIFlow image. It burned successfully.

When I clicked the reset button, it found COM4 and COM5 (it usually just has COM4) but still no screen.

Now I think I have it working. I think maybe I assumed it would load a program to the screen for UIFlow, but I guess it doesn't?

Is there a good place to get more S3R programs? I only see the UIFlow one in M5Burner?