On one of my M5Stack devices the battery in the bottom module is swollen. That worries me!
I have used the M5Stack with the additional battery module. Then both batteries are connected in parallel, right?
Can that be the cause? Has anyone ever observed this when using the extra battery module?
Posts made by hague
Swollen M5Stack Battery.
RE: M5Stack Bala Battery?
It also took me a little while to get the BALA up and running. Then I made a little video as a kind of manual. Maybe it helps the one or the other.
If it does not behave this way at all, for example if the green LEDs on the motors do not light up at all, then it is possible that the motor driver is damaged.
RE: M5Stick IMU Yaw Readings Off
I have achieved quite good results with the Seeed Studio Grove 3-Axis Digital Compass V2.
RE: ATOM Matrix leds blink very shortly at random (solved by workaround)
I also never saw any flickering, but I used the M5.dis.displaybuff() method with predefined patterns.
You can check the code here: https://github.com/electricidea/M5ATOM/tree/master/Tilt-Game
Hope that helps.
RE: M5 Stickc Arduino samples - Temperature reading issue
I can confirm that it is related to the radiation from the M5StickC. When I connect the ENV-HAT with cables away from the stick, the sensor measures reasonable values.
Incorrect values if the ENV-HAT is directly connected:
Correct values if the ENV-HAT is connected via a cable extension:
RE: M5Stack Bala Battery?
My balancing robot has an identical problem. But not from the beginning: At first it worked. But then the motor board failed. I can't tell if it's related to a connection via USB for loading the battery or if it just happened. But it is definitely the board that is broken.
I have noticed that the case gets warm when I try to charge it. The red LED lights up continuously, indicating a fully charged battery, but the unit won't turn on. There are no green LEDs on the motors. As I said, it worked in the beginning.
I have noticed that the IMU on the core unit no longer provides data when the motor unit is connected. It looks as if the I2C bus is blocked.
If a USB cable is connected for charging, the IC 5306 gets hot above 90°C:
By the way: Now, the red LED is no longer lit at all!
I think the board is broken. I measured the voltage of the battery when the battery is connected to the board but it shows 0V. Maybe the short circuit protection shuts down? Good to know, otherwise my flat would be on fire now....
The battery is working fine inside another M5Stack Core unit, so the battery is not broken.
I measured the Current consumption of the board without a connected battery:
Again, a further indication that the board is damaged.
Looks like I will need a new board...
Does anyone else have a problem with the board?
RE: Multi Version M5StickC
What exactly happens, when you say "instruction not works"? Does your code compile but the screen brightness doesn't change?
Have you tested other AXP function like the Battery status:
char text_buffer; M5.Lcd.fillScreen(TFT_BLACK); M5.Lcd.drawCentreString("Battery status:", 80, 20, 2); snprintf(text_buffer, sizeof(text_buffer), "%.2fV --- %.2fmA", M5.Axp.GetBatVoltage(), M5.Axp.GetBatCurrent()); M5.Lcd.drawCentreString(text_buffer, 80, 40, 2);
Is that working?
RE: M5Stick C mit EXTEND I/O-Modul
@super1grobi Hast Du die Bibliothek (.cpp und .h Datei aus dem github Link von lukasmaximus) mit kopiert und in ein Verzeichnis gelegt, welches vom Compiler berücksichtigt wird? Die PCA9554 Klasse ist in der Header-Datei "PCA9554.h" definiert. Diese wird ja inkludiert, dann sollte sie auch definiert sein und der Typ sollte bekannt sein.
RE: M5stick from PlatformIO
Another simple solution is to download the library and put all files from the /src directory directly it in the /src directory from your PlatformIO project.
Link to the library:
Then you can include the header file like this:
Not exactly the most beautiful solution, but it works...