Posts made by ckuehnel

Get error message at installation. What can I do?

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I want to use the PowerC as a backup battery for the small internal.
I use your program example and it works.
After switching on the PowerC I can see the external Vbat and seconds later PowerC switches off and I can see the internal Vbat. This is not the expected behavior. Additionally, the switch loses its membrane already (after 20 presses).

@hugo I do not have this problem.
Two quick&dirty proposals: 1. double sided tape between M5StickC and the hat or 2. drill two holes into the back of the hat and you can fix the M5StickC by two screws.

I build a handheld thermometer based on M5StickC, 18650 hat and ENV hat.
Now I am looking for the possibility to check the status of the 18650 LiPo and show it on TFT (see my blog).

If I connect the SIM800L module to the M5Stack Basic Core I get always Resets as in the screenshot shown

Is there enough power over the USB connector to source that combination? SIM800L can have spikes till 2 A.

I have connected a GoBottom w/ 600mAh LiPo but that's not enough. What can I do in this case?

Is there Arduino code available? I have some problems with the examples added to the library.

What's the content?

I connected an DS18B20 w/ pullup to the Grove connector and want to readout temperature. No success.
Connecting it to the header GND, VCC and G26 it works as expected.
I tried G32 and G33 at Grove w/o success.
What's wrong there?

Here is a working code example:

/*

• Test of IP5306 functions
  */

#include <M5Stack.h>

void setup()
{
// initialize the M5Stack object
M5.begin();
Wire.begin(); // required to access IP5306
M5.Lcd.fillScreen(BLACK);
M5.Lcd.setCursor(0, 10);
M5.Lcd.setTextColor(WHITE);
M5.Lcd.setTextSize(2);
M5.Lcd.printf("IP5306 Function Test\r\n");

if(!M5.Power.canControl())
{
M5.Lcd.setTextColor(RED);
M5.Lcd.printf("No communication with IP5306 chip");
while(1);
}
}

void loop()
{
M5.Lcd.fillRect(0,180,360,60,0);
uint8_t bat = M5.Power.getBatteryLevel();
M5.Lcd.setCursor(0,180);
if (M5.Power.isCharging()) M5.Lcd.printf("Battery is charging\r\n");
else M5.Lcd.printf("Battery is not charging\r\n");
M5.Lcd.printf("Battery Level %d", bat);
M5.Lcd.progressBar(0, 220, 360, 20, bat);
delay(5000);
}