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A

@tdahbura You cant use it on port B because the port has one hardware fixed output pin and one hardware fixed input pin.
Port C is attached to dedicated UART pins.
For port B you need the PortB version of the sensor or use a the PaHub .
FAQS

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

181
Topics

923
Posts

P

@Ariel-Jorge , Thanks! It worked perfectly for me!
Units

449
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1.7k
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C

@flypeek … means I can’t use atom grove port to connect to scroll unit?!?
Cores

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

1.2k
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5.2k
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K

@neus-morla
have you tried link it directly to your Fire? it may be a PbHub config problem
Bases

44
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175
Posts

R

Solution found!

Looking around at examples in https://docs.micropython.org/en/latest/library/machine.I2S.html
I noticed that the I2S "id: identifies a particular I2S bus; it is board and port specific" was set to 2.

Changing "I2S port" from 0 to 2, and keeping everything else the same; made things work.
Atom

For topics on the M5Stack Atom.

212
Topics

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K

I was able to get my M5Stack code base to work on the M5AtomS3 with M5Unified (my first time using both).

As I'm now trying to get various sensors to work, the first is the external LED.

But I get the following compiler error:

clockless_rmt_esp32.h:358:46: error: static assertion failed: Invalid pin specified

fastled_esp32.h:12

Full file path shown:
In file included from /Users/scott/Documents/Arduino/libraries/FastLED/src/platforms/esp/32/fastled_esp32.h:12, from /Users/scott/Documents/Arduino/libraries/FastLED/src/platforms.h:36, from /Users/scott/Documents/Arduino/libraries/FastLED/src/FastLED.h:54, from /Users/scott/Documents/Arduino/libraries/M5AtomS3/src/./utility/LedDisplay.h:4, from /Users/scott/Documents/Arduino/libraries/M5AtomS3/src/M5AtomS3.h:6, from /Users/scott/Documents/GitHub/M5Unified-ESP_IOT_Nov24/ESP32_M5Unified/ESP_IOT/Defines.h:467, from /Users/scott/Documents/GitHub/M5Unified-ESP_IOT_Nov24/ESP32_M5Unified/ESP_IOT/src/SensorClass/KeyUnitSensorClass.h:3, from /Users/scott/Documents/GitHub/M5Unified-ESP_IOT_Nov24/ESP32_M5Unified/ESP_IOT/src/SensorClass/KeyUnitSensorClass.cpp:2: /Users/scott/Documents/Arduino/libraries/FastLED/src/platforms/esp/32/clockless_rmt_esp32.h: In instantiation of 'class ClocklessController<23, 72, 72, 144, (EOrder)66, 0, false, 5>': /Users/scott/Documents/Arduino/libraries/FastLED/src/chipsets.h:605:7: required from 'class SK6812Controller<23, (EOrder)66>' /Users/scott/Documents/Arduino/libraries/FastLED/src/FastLED.h:109:52: required from 'class SK6812<23, (EOrder)66>' /Users/scott/Documents/Arduino/libraries/FastLED/src/FastLED.h:304:39: required from 'static CLEDController& CFastLED::addLeds(CRGB*, int, int) [with CHIPSET = SK6812; unsigned char DATA_PIN = 23; EOrder RGB_ORDER = (EOrder)66]' /Users/scott/Documents/GitHub/M5Unified-ESP_IOT_Nov24/ESP32_M5Unified/ESP_IOT/src/SensorClass/KeyUnitSensorClass.cpp:124:54: required from here /Users/scott/Documents/Arduino/libraries/FastLED/src/platforms/esp/32/clockless_rmt_esp32.h:358:46: error: static assertion failed: Invalid pin specified static_assert(FastPin<DATA_PIN>::validpin(), "Invalid pin specified"); ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~
Any ideas?
Should these errors be added to the GitHub?

thanks,
scott

P

Arduino IDE sample sketch "UHF-RFID-JRD4035" have error

• • PAOPAO

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B

Hi Paopao,
I am in your same situation, I have been trying to communicate UHF-RFID-UNIT with Aton Lite and I don't know the right code.
Could you spend the code to start my project?

Thank you
H

AtomFLY: All enabled motors spin slower as I turn on additional motors

• • hmmmkay

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3
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A

Have you checked the voltage drop of the batteries as each motor spins up?
B

M5Stack UnitV1

• • bobitto123

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H

The OV2660 version is EOL, but you can buy the OV7740 version here: https://shop.m5stack.com/products/unitv-k210-edge-computing-ai-camera-ov7740
(There are no noticeable differences between the 2 versions)
S

Send snapshot by Timer Camera X

• • Spline

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I

Yes if you google "m5stack timer camera examples" there are multiple examples ..

I have tried several but so far not able to get good resolution .. i think the software is not referencing the PSRAM corrrectly because the picture save process errors at about 450k.

I am going to try this tomorrow .. https://github.com/mumris/M5Stack-Timer-Camera-X
F

drawJpgFile at specific coordinates

• • forjus2000

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A

void drawJpgFile(fs::FS &fs, const char *path, uint16_t x = 0, uint16_t y = 0, uint16_t maxWidth = 0, uint16_t maxHeight = 0, uint16_t offX = 0, uint16_t offY = 0, jpeg_div_t scale = JPEG_DIV_NONE); void drawPngFile(fs::FS &fs, const char *path, uint16_t x = 0, uint16_t y = 0, uint16_t maxWidth = 0, uint16_t maxHeight = 0, uint16_t offX = 0, uint16_t offY = 0, double scale = 1.0, uint8_t alphaThreshold = 127);
As you can see you don't need the extra values because they're automatically SET, even
M5.Lcd.drawJpgFile(SD, "/wifi.jpg",110,40,100,100,0,0);
does not work though, Why are the libraries not working properly?
S

Timer Camera X voltage range

• • Spline

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F

You guys put the wrong threads in M5-StickT, you put M6, not 1/4"-20

• • frank26080115

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F

And while you guys fix the nylon 3D printed case design, please also add holes for the infrared emitter.

I see the IR emitter LED on the PCB but there's no holes on the case to let the light out.

And if you are wondering, yes, I do need it.

It would be helpful if you guys posted a file type better than STL so I can actually edit the 3D model myself. Like STEP or IGES.
E

m5Paper Screen issue

m5paper screen • • ebr61168

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F

Hello @ebr61168

I am out of ideas at this point in time, sorry.

Have you checked with M5Stack support or the shop / store you got your M5Paper from?

Thanks
Felix
K

Powering on the c3u

• • KjaerN

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K

Hi @felmue

Ok, but thank you for loking into it anyway.

Best regards
Kenneth
M

M5Paper v1.1: Detect charging state and progress

• • MauriceX111

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Hi @MauriceX111 I've also just got an M5 Paper v1.1 (my first experience of M5 or ESP32) and it is a very nice product but I'm also struggling to find out things... Very grateful that this community - and especially @felmue - are here, otherwise I'd be completely stuck!

Felix pointed me at the code that the device ships with.

Searching this, I found here the following code
// Battery _bar->setTextDatum(CR_DATUM); _bar->pushImage(498, 8, 32, 32, ImageResource_status_bar_battery_32x32); uint32_t vol = M5.getBatteryVoltage(); if (vol < 3300) { vol = 3300; } else if (vol > 4350) { vol = 4350; } float battery = (float)(vol - 3300) / (float)(4350 - 3300); if (battery <= 0.01) { battery = 0.01; } if (battery > 1) { battery = 1; } uint8_t px = battery * 25; sprintf(buf, "%d%%", (int)(battery * 100)); // _bar->drawString(buf, 498 - 10, 27); _bar->fillRect(498 + 3, 8 + 10, px, 13, 15);
So that doesn't help with finding out whether the battery is charging; but it does seem to be the best available way to represent the charge level.

HTH.
S

Stamp C3 /C3U pinout diagrams

• • SlydeRule

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T

@felmue OK! I tied the very complicated TOF sensor because it is in-line code, no damned Library and...
...It works on C3.
The expected activity on the G1, G0 was as it should be.
So, thanks for your help, I will use this event as a plateau and work to trouble shoot the ENV myself, probably with in-line code, No Lib !!!
Vielen Dank!
T

M5Stack Module and Sensor power specs

• • timbobot

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No one has replied
N

M5Stamp C3U unable to load program

• • NuttyMonk

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Thanks @felmue. When I looked at your code I realised my mistake. I'd been treating the RGB LED as a simple LED, not an RGB. I should have read the spec sheet! It's all working as expected. I have also managed to get the M5Stamp attached to Blynk.

Tony
F

M5StickC-Plus MPU6886 cannot report upside-down pitch, only between 0 to 90

• • frank26080115

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T

LoraWAN868 demo error

• • tonyd

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T

Hi @felmue

I got a bit further. Instead of just using the demo app, I built the app up step by step from the separate unit components and put debug prints on each step. I have now got the code printing a message at the top of the loop containing the two if/do statements. So for me it seems that taking the demo code was the problem. I don't know why though as I essentially built the same code block by block. The next problem is that Things Network is not letting me in. I think I will have to switch to the arduino IDE as there is a bit more control over debugging there

Tony
C

M5 Stack Core2 Firmware Stops Working on Reboot

• • codewitch

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Hello @codewitch

good news - your M5Core2 most likely is not defective. For me the issue is happening independently of whether M5Core2 is running from USB or battery. It always happens after a complete power loss. The reason it is not working as expected is that for some functions dealing with voltages you declared the parameter as float but then call them with big non float values. Here is what I changed in m5core2_power.cpp to make it work:
//--fm Wire1.begin(22,23); Wire1.begin(21,22); //--fm mcu_voltage(3350); mcu_voltage(3.350); //--fm lcd_voltage(2800); lcd_voltage(2.800); //--fm ldo_voltage(2, 3300); //Periph power voltage preset (LCD_logic, SD card) ldo_voltage(2, 3.300); //Periph power voltage preset (LCD_logic, SD card) //--fm ldo_voltage(3, 2000); //Vibrator power voltage preset ldo_voltage(3, 2.000); //Vibrator power voltage preset
Thanks
Felix
A

Atom U STTServer down

• • ajb2k3

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No one has replied
E

How ROS is used in mechArm 270?

• • ElephantRobotics

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E

@kkkkkk It is esp32
E

Implement the color recognition on myCobot

• • ElephantRobotics

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K

Good article, I will buy this kit
G

Touch get wrong X and Y values more you go away from display center

• • GMG

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F

Hello @GMG

care to share some code which exhibits the issue you are describing?

Thanks
Felix

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