PRODUCTS

Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.

Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).

Subcategories

Modules

531
Topics

1.9k
Posts

H

@iorex I’ve had partial success using the Roller485 with the pwrCan module. Your setup looks similar to mine, except I’m using a Core3, so my pin numbers are different.

First, check whether your motor is in RS485 mode. The screen on the back should show COM: 485.
Second, make sure the motor ID is set to 1. The third line on the motor screen should read ID: 0x01.
Lastly, confirm that the motor’s baud rate is 115200 (this is the default).

If all of the above is correct, you can move on to the pwrCan module. Did you flip the resistor for RS485 to the ON position? Are the DIP switches configured correctly?

I was able to control motor speed over RS485, but I still get the error: “Unexpected response length: 32, expected: 17.” It looks like there’s a communication issue from the motor back to the pwrCan module.

As an alternative, you can power the motor using the power pins on the RS485 terminal and send commands via I²C. It requires more wiring, but it works with much less hassle.
FAQS

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

198
Topics

986
Posts

R

its easier from inside - just undo nut - than using screwdriver in "bolt" flat slot from outside
Units

489
Topics

1.8k
Posts

S

@andrew-winton
Hi, did you ever solve this problem?
Thanks
Cores

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

1.3k
Topics

5.5k
Posts

S

So my first steps in setting up a project with M5Stack AWS on my Mac OSX Big Sur (11.6). Installation of visual studio seems okay. When compiling the AWS IoT EduKit Getting Started PlatformIO Configuration File I get this error message
Bases

53
Topics

197
Posts

W

Hi All,

I just purchase Base X connect with M5Stack FIRE, but I just realize that UIFlow 2.0 did not support Base X.

Is there have any plan for UIFlow 2.0 to support Base X in the near future?
Atom

For topics on the M5Stack Atom.

241
Topics

806
Posts

F

Hello @Rusticus42

there is a solution: use a M5PbHub unit (which is an I2C unit) to read the button states of the Dual Button unit.

I created an example in the UIFlow2 Project Zone: M5AtomS3_RFID_PbHub_DualButton_Test_UIFlow2.3.7

Note: I do not have an M5AtomS3R so you probably need to adapt the example.

Thanks
Felix

T

This topic is deleted!

• • thop

1

0
Votes

1
Posts

168
Views

No one has replied
G

m5paper charging issues?

• • gcormier

5

0
Votes

5
Posts

9.0k
Views

F

Hello again

Update: in the above experiment my M5Paper successfully came out of deep sleep for the last time at about 3.31V (multimeter value) / 3.284 (ADC value). Next time I checked it died during boot.

Thanks
Felix
A

COLOR_TCS3472 on Atom Lite cannot find sensor

• • Alban_T

2

0
Votes

2
Posts

3.2k
Views

F

Hello @Alban_T

the sketch you linked is for M5Stack devices. M5Atom Lite is a bit different. For instance:
I assume you modified #include <M5Stack.h> to #include <M5Atom.h>. did you also adapt the M5.begin() call to enable I2C? E.g. M5.begin(true, true, true) - the second true enables I2C on Atom Lite. is your sensor connected to the proper GPIOs? E.g. SDL - GPIO25 and SCL - GPIO21.
excerpt from M5Atom.cpp as reference:
void M5Atom::begin(bool SerialEnable , bool I2CEnable , bool DisplayEnable ) { if( _isInited ) return; _isInited = true; if( I2CEnable ) { Wire.begin(25,21,10000); }
Hope this helps. If not, feel free to post the full sketch.

Good luck.
Felix
G

M5Paper Canvas Rendering Artifacts

• • grundprinzip

2

0
Votes

2
Posts

4.8k
Views

M

My question is, if the behavior is required or an artifact of the integration with the driver?

I think this is required.
When actually transferring data to the screen, this is done 4 pixels at a time.

Shouldn't the library simply forbid creating a canvas that is not a multiple of 4?

Probably, yes.
D

Proto Module could be more useful

• • DrWino

4

0
Votes

4
Posts

9.5k
Views

Z

Fully agree on this one.
Having access to the bus signal would be a minimum.
K

Is Wifi Direct available for any of the M5Stack esp32 devices?

• • Kees

4

0
Votes

4
Posts

6.3k
Views

W

@kees
Blynk works well for controlling devices with smartphones. Just an option for you.
B

"Error 22 bat val error"

• • bigjohn2345

7

0
Votes

7
Posts

8.7k
Views

T

@zontex Thank You So Much.
G

M5Paper unique device identifier?

• • gionata

4

0
Votes

4
Posts

5.4k
Views

G

Here is a solution to create an unique identifier that is based on the device's MAC address (but is not easy to guess and is not the MAC address itself):
/** Returns a hashed uint64_t */ uint64_t getHashedInt64(uint64_t u) { uint64_t v = u * 3935559000370003845 + 2691343689449507681; v ^= v >> 21; v ^= v << 37; v ^= v >> 4; v *= 4768777513237032717; v ^= v << 20; v ^= v >> 41; v ^= v << 5; return v; } /** Return a device unique identifier based on device's mac address, eg. 6C4080B51A5D3659 */ String getUniqueId() { uint64_t mac = ESP.getEfuseMac(); uint64_t hash = getHashedInt64(mac); uint32_t msb = hash >> 32; uint32_t lsb = hash & 0xFFFFFFFF; char unique_id[20]; sprintf(unique_id, "%08X%08X", msb, lsb); return String(unique_id); }
Calling:
getUniqueId() returns something like 6C4080B51A5D3659
H

CardKB powered by 3.3V not working?

• • hillsh_vi

2

0
Votes

2
Posts

2.6k
Views

Z

@hillsh_vi hello, do you mean you power the CardKB using 3.3V? it might be the reason as the requirement is 5V. what you can do is power it by 5V and then downstep to 3.3V for the FPGA.
A

why stepper motor driver module suitable for Atom Lite only

• • aerolite

3

0
Votes

3
Posts

5.2k
Views

F

Hi guys

if you look closely you'll find that the schematics for M5Atom Matrix and M5Atom Lite are not completely the same. Apart from the RGB LEDs (25 vs 1) only the M5Atom Matrix has an MPU6886 internally which is controlled via I2C using GPIO21 and GPIO22.

However with the ATOM Stepper Motor Driver GPIO21 and GPIO22 are used for RST (Reset) and EN (Enable).

Therefore only M5Atom Lite can be used to control the ATOM Stepper Motor Driver.

Thanks
Felix
Y

M5Paper sd card issues

• • yellowelise

5

0
Votes

5
Posts

9.3k
Views

S

@yellowelise

You have to do / when referencing the root in Arduino SD libraries..

I've modified your example to output to the screen instead of serial and fixed it for you.. (I left the syntactically redundant exists, try create anyways, exists code in as that's what the original example did, it probably needs another if)
#include <M5EPD.h> M5EPD_Canvas canvas(&M5.EPD); File myFile; void setup(void) { M5.begin(); M5.EPD.SetRotation(90); M5.EPD.Clear(true); M5.RTC.begin(); canvas.createCanvas(540, 400); canvas.setTextSize(3); bool ret = SD.begin(4, SPI, 20000000); if(ret == false) canvas.drawString("SD ERROR...", 45, 100); else { canvas.drawString("SD OK...", 45, 100); if (SD.exists("/screen.txt")) canvas.drawString("Screen.txt Exists...", 45, 150); else canvas.drawString("Screen.txt Not Exists...", 45, 150); canvas.drawString("Try create Screen.txt", 45, 200); myFile = SD.open("/screen.txt", FILE_WRITE); myFile.println("Some text..."); myFile.close(); if (SD.exists("/screen.txt")) canvas.drawString("Screen.txt Exists...", 45, 250); else canvas.drawString("Screen.txt Still Not Exists...", 45, 250); } canvas.pushCanvas(0,0,UPDATE_MODE_DU4); } void loop(void) { }
G

M5 paper GSM module

• • gael

1

0
Votes

1
Posts

2.9k
Views

No one has replied
K

M5Paper internal LiPO battery discharge data

• • kok1

1

0
Votes

1
Posts

2.3k
Views

No one has replied
L

machine learning v-training

unitv v-training • • lightspotproject

1

0
Votes

1
Posts

4.9k
Views

No one has replied
B

Constantly increasing magnetometer reading

• • butch

2

0
Votes

2
Posts

4.8k
Views

C

@butch Did you ever figure this out? I am having the same issue.
ChristopherO
C

Remote Control of BALA2?

• • ChristopherO

1

0
Votes

1
Posts

2.7k
Views

No one has replied
K

M5Paper and M5Burner fails

• • kevindtimm

1

0
Votes

1
Posts

3.2k
Views

No one has replied
K

Retain WLAN config

• • kevindtimm

1

0
Votes

1
Posts

2.9k
Views

No one has replied
S

M5Paper and WLAN

• • Skink

2

0
Votes

2
Posts

5.1k
Views

S

have now checked it with the second M5Paper but this can also log on to the WLAN and also syncronize. But just the first time, then I am also with this an active connection on the M5Paper displayed but in the WLAN of the router but he is grayed out (so no longer connected) and a second syncronisieren fails!
B

Question about motor controller

• • boz

1

0
Votes

1
Posts

2.2k
Views

No one has replied

17 / 29

This topic is deleted!