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/

@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!

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?

Unfortunately, even with new cables, the problem persists .. I tested my SmallHD 503U monitor with a RPI3 and it works @macsbug what do you think? best regards

@mgrouch Anyone? IMU FIFO is a feature of that device but no examples??? Thanks

@ajb2k3 In version 1 yes but not in UIflow. Nothing like ESPtouch etc.

@robski i know but i am placing it next to my amp, so the remote sends data to two units, so the m5 just acts as a "counter of button press"

@ajb2k3 thanks for your reply and help. yes, I installed and it worked with the M5Burner. [image: 1725380715523-0a34e5f7-a963-43fd-9c9e-fb88d92a992a-image.png]