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433
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1.6k
Posts

C

@felmue It works in a totally random way, sometimes it gets the answer to the 'GET' and then it enters an infinite loop:
AT+CIPRXGET=4,0 07:25:49.725 > 07:25:49.727 > +CIPRXGET: 4,0,0 07:25:49.727 > 07:25:49.727 > OK 07:25:49.727 > AT+CIPCLOSE? 07:25:49.734 > 07:25:49.735 > +CIPCLOSE: 0,0 07:25:49.735 > 07:25:49.735 > OK 07:25:50.219 > AT+CIPRXGET=4,0 07:25:50.226 > 07:25:50.226 > +CIPRXGET: 4,0,0 07:25:50.227 > 07:25:50.227 > OK 07:25:50.228 > AT+CIPCLOSE? 07:25:50.234 > 07:25:50.234 > +CIPCLOSE: 0,0 07:25:50.236 > 07:25:50.236 > OK 07:25:50.720 > AT+CIPRXGET=4,0 07:25:50.727 > 07:25:50.728 > +CIPRXGET: 4,0,0 07:25:50.728 > 07:25:50.728 > OK 07:25:50.728 > AT+CIPCLOSE? 07:25:50.736 > 07:25:50.736 > +CIPCLOSE: 0,0 07:25:50.736 > 07:25:50.737 > OK 07:25:51.221 > AT+CIPRXGET=4,0 07:25:51.229 > 07:25:51.230 > +CIPRXGET: 4,0,0 07:25:51.230 > 07:25:51.230 > OK 07:25:51.230 > AT+CIPCLOSE? 07:25:51.237 > 07:25:51.237 > +CIPCLOSE: 0,0 07:25:51.238 > 07:25:51.238 > OK 07:25:51.722 > AT+CIPRXGET=4,0 07:25:51.730 > 07:25:51.731 > +CIPRXGET: 4,0,0
However, the library must be modified to be able to obtain a communication as it does not connect with the original commands.
I think the nb-iot command set in LTE is wrong.

It is also my opinion that an nb-iot device without a hardware reset cannot be used seriously.

Thanks for the helping.
FAQS

When you meet problems using M5Stack, we help you solve it.

179
Topics

906
Posts

M

@jarain78 Hello,

I'm currently facing the same pb with my M5dial:

Any idea ?
URL_REFRESH='https://api.netatmo.com/oauth2/token' params={ 'grant_type':'refresh_token', "client_id":'xxx', "client_secret":'xxx', "refresh_token":'xxx' } rep=requests.post(URL_REFRESH, data=params)
=> TypeError: object with buffer protocol required
Units

429
Topics

1.6k
Posts

T

@l-roca It's your choice. If the load is within the 5V current output of the Dial, then all you need is a M5Stack splitter (T-connector).
https://shop.m5stack.com/products/grove-t-connector-5pcs-a-pack
I just confirmed that now.
IMG_6165.JPG
Cores

Core2 for AWS M5Stack Fire M5stack Grey M5 Stick/StickC M5GO FACES Kit M5Stick V Core 2

1.2k
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5.1k
Posts

R

Just in case the linked document disappears, here's the gist:
Be sure the TinyGPS++ library is installed in
Arduino\libraries

TinyGPS++ here:
https://github.com/mikalhart/TinyGPSPlus/releases
// If your M5Stick is the original, use: #include <M5StickC.h>　 // If its M5 Stick Plus 2 use: #include "M5StickCPlus2.h" //The rest should be default: #include "TinyGPS++.h" TinyGPSPlus gps; HardwareSerial GPSRaw(2); void setup() { M5.begin(); M5.Lcd.setRotation(3); M5.Lcd.fillScreen(BLACK); M5.Lcd.setTextSize(2); // Size 1 or 2 as needed M5.Lcd.setCursor(20, 15); M5.Lcd.println("GPS UNIT TEST"); GPSRaw.begin(9600, SERIAL_8N1, 33, 32); // M5StickC?GROVE??? while (!GPSRaw) { ; // ??????????????? } } void loop() { while(GPSRaw.available()) { gps.encode(GPSRaw.read()); if (gps.location.isUpdated()) { M5.Lcd.setCursor(20, 30); M5.Lcd.print("LAT="); M5.Lcd.print(gps.location.lat(),6); M5.Lcd.setCursor(20, 45); M5.Lcd.print("LNG="); M5.Lcd.print(gps.location.lng(),6); M5.Lcd.setCursor(20, 60); M5.Lcd.print("ALT="); M5.Lcd.print(gps.altitude.meters()); } } }
Bases

42
Topics

171
Posts

A

@franzhoepfinger M3 Socket cap bolts are generally easy to buy anywhere online and you can often get them for cheap on Amazon. The kits are only so you can work out what size M3 socket cap /hex Cap screw you may need
Atom

For topics on the M5Stack Atom.

186
Topics

619
Posts

R

@iamnoob all is possible, what screen you want to see it? remote just sends volume up or down coded command it doesnt send volume level number which you often see on tv volume bar

A

FAO Dimi - Product request 90 degree adapter board.

• • ajb2k3

2

0
Votes

2
Posts

2.9k
Views

A

0_1529224923070_M5Rapr.png
Something like this (if you look closely you can see the software failed to make all connections.
S

SPI clash between LCD and nRF24L01

• • skelstar

14

0
Votes

14
Posts

35.7k
Views

S

Hello,

thank you for your reply. I'v tried to only use the CS pin and it works, but... yes, there is always a but :-) the results are not very accurate. From the moment a set a brightness in the screen, the values of the temperatures grows.

I try to read the temp in a separate task, but it didn't change anything.

Here is my code
#include "Adafruit_MAX31855.h" #include <SPI.h> #include <M5Stack.h> // Example creating a thermocouple instance with software SPI on any three // digital IO pins. #define MAXCS 17 Adafruit_MAX31855 thermocouple(MAXCS); void task1(void * pvParameters) { for (;;) { float avg = 0; /* Read nbReadToAvg times to make an average of the temp */ for (int i = 0; i < nbReadToAvg; i++) { float c = thermocouple.readCelsius(); avg = avg + c; delay(100); } avg = avg / nbReadToAvg; Serial.println(avg); } } void setup() { Serial.begin(115200); Serial.print("MOSI="); Serial.println(MOSI); Serial.print("MISO="); Serial.println(MISO); Serial.print("SCK="); Serial.println(SCK); Serial.print("SS="); Serial.println(SS); thermocouple.begin(); Serial.print("Internal Temp = "); Serial.println(thermocouple.readInternal()); while (!Serial) delay(1); // wait for Serial on Leonardo/Zero, etc Serial.println("MAX31855 Initializing ..."); // M5.Lcd.setTextColor(WHITE, BLACK); // wait for MAX chip to stabilize delay(1000); xTaskCreatePinnedToCore( task1, "task1", 4096, NULL, 1, NULL, 0 ); Serial.println("M5 begin without LCD"); M5.begin(false, false); delay(10000); Serial.println("LCD Start"); M5.Lcd.begin(); for(int j=0;j<100;j++) { //Serial.printf("Brigthness=%d\n", j); M5.Lcd.setBrightness(j); delay(200); } //delay(10000); Serial.println("LCD Shutdown set Brightness to 20"); M5.Lcd.setBrightness(10); //M5.Lcd.sleep(); M5.Lcd.setTextSize(4); M5.Lcd.print("test"); M5.update(); } void loop() { }
And here is the result :
20.27 20.50 20.35 20.45 20.27 18.52 20.12 20.58 20.42 LCD Start 20.27 18.60 21.55 22.73 21.58 21.77 21.98 20.87 21.40 22.40 21.65 23.60 23.40 24.02 24.48 24.62 24.55 29.67 26.83 25.52 29.15 LCD Shutdown set Brightness to 20 23.48 22.27 22.15 21.50 22.92 20.50 21.67 22.60 21.92 22.12 22.42
Why can see that between the line LCD start and the LCD shutdown, the temperature grows and that why the brightness of the screen is increasing. After the line "LCD Shutdown" the brightness is set to 20 and the value are higher that the values at the beginning but they don't moved.
D

M5Stack serious WiFi Failures !!

• • DrWino

21

0
Votes

21
Posts

82.4k
Views

P

Hi, I had the same problem as you, my M5stack did not connect or crash if you did it by force, for cons I solved my problem by installing a new firmware and changing USB port, I was on a HUB and now I'm using a USB port on my PC

Link of the firmware : https://github.com/botofancalin/M5Stack-MultiApp-Advanced
T

M5GO MPU9250 does not work at all

• • tomorrow56

1

0
Votes

1
Posts

4.2k
Views

No one has replied
Z

Microphone on m5go

• • zendamage

1

0
Votes

1
Posts

4.6k
Views

No one has replied
D

5V pin not working on a M5Stack core

• • daslolo

5

0
Votes

5
Posts

10.4k
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D

No response from the m5 team on twitter so I returned it through Amazon.
M

"Bottom" IO expander pinout

• • maxic62

3

0
Votes

3
Posts

12.6k
Views

M

Thanks you so much for your reply !
So, right now I'm understanding that I will have half IO than expected...

Thanks again, It helps me a lot
See you
H

Overheat

• • hypnos

4

0
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4
Posts

6.7k
Views

J

@hypnos
CP2014 controls the USB to serial connection....

COM port connection problems can result from other things: using the old driver (Windows), faulty USB cable, etc.

However the CP2014 should NOT be so hot that you can't touch it and leave your finger there.

Q - Is it that hot ?

If it is, then yes perhaps don't use the battery with this unit.

If the chip is super hot (and your COM port is working for other devices) you could also look to contact your supplier.

I've tested lots of M5 units and use 4 regularly and have not had this problem. I also haven't heard of anyone else having this problem.

If you get another M5 I would not at all expect this to happen again.
H

This topic is deleted!

• • hypnos

1

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1
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1
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No one has replied
R

Battery issue

• • rad0ne

34

3
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34
Posts

165.3k
Views

M

For those who have 'battery issue' with their M5Stack; please, use the 'contact now' button on any product page of our Aliexpress store to contact with our after-sale team. We will try our best to bring you a satisfying purchase experience.
D

M5Stack ESP32 revision

• • danIoT

7

0
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7
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15.5k
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D

@jimit sounds good! thank you.
D

External power to header ?

• • DrWino

6

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6
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16.1k
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X

@drwino
:-)
Good luck.
M

How to save data without SD card?

• • m5dude

2

0
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2
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7.5k
Views

X

use "Preferences" class
#include <Preferences.h>

Preferences preferences;

void setup() {
Serial.begin(115200);
Serial.println();

// Open Preferences with my-app namespace. Each application module, library, etc
// has to use a namespace name to prevent key name collisions. We will open storage in
// RW-mode (second parameter has to be false).
// Note: Namespace name is limited to 15 chars.
preferences.begin("my-app", false);

// Remove all preferences under the opened namespace
//preferences.clear();

// Or remove the counter key only
//preferences.remove("counter");

// Get the counter value, if the key does not exist, return a default value of 0
// Note: Key name is limited to 15 chars.
unsigned int counter = preferences.getUInt("counter", 0);

// Increase counter by 1
counter++;

// Print the counter to Serial Monitor
Serial.printf("Current counter value: %u\n", counter);

// Store the counter to the Preferences
preferences.putUInt("counter", counter);

// Close the Preferences
preferences.end();

// Wait 10 seconds
Serial.println("Restarting in 10 seconds...");
delay(10000);

// Restart ESP
ESP.restart();
}

void loop() {}
P

Flaky M5STACK-4M-PSRAM

• • pkourany

8

0
Votes

8
Posts

14.7k
Views

D

@jimit thanks for the link.
K

Charging the battery

• • km4hpk

7

0
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7
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19.8k
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K

I am charging it with the ipad 1 charger. I have a meter and the wall wart is normally 5v, but the output amps is .3A and on the faces that i have it is .17A. It charges my other things just fine. I don't know why the amp draw is so low.
M

Battery fix found (sort of)

• • m5dude

7

0
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7
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16.6k
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R

@m5dude 在 Battery fix found (sort of) 中说：

so i think the solution was spreading the pins and squeezing it together. The connections on the M5 core are weak.

the same as I wrote here:
http://forum.m5stack.com/topic/39/battery-issue/10
and here:
http://forum.m5stack.com/topic/62/ip5306-automatic-standby/14
M

How to custom sell m5 firmwares?

• • m5dude

3

0
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3
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7.8k
Views

M

@m5stack this is exciting to here! be able to drop ship a custom preloaded m5 to customers would be amazing!
K

Emulation of games

• • km4hpk

4

0
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4
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13.7k
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K

Thank you. I will check it out
K

M5Stack - AutoCAD Drawings

• • KenTinker

15

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15
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30.2k
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J

@kentinker Excellent. Probs a good idea to have a nice working link for the future. No worries - didn't mess me up. Good luck with the github - so far so good. Its very useful and powerful once you get into it.

I will add your files up to my github later on.... thanks again.
O

Extrusion mould issue causes crack

• • on4aa

3

0
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3
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7.6k
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O

@m5stack No, not at all! It was just sitting on my desk and over the course of two days a crack appeared and gradually grew over the whole width. The other three edges show no problem. This is why I suspect a problem with the extrusion mould.

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