Topics created by arzaman

Hi @arzaman, Sorry to answer with a question, but I just want to check I've understood.

You want to accommodate the 5V supply into this sensor and associated 5V? logic output from it down to the 3V3 input of StickC, Core2, etc?

A couple of thoughts:
#1 StickC has a 3V pin out on the end opposite Groove port, so I guess you could go from the head end of the StickC to sensor (reduce all to 3V3).

#2 Copy the voltage divider circuit a lot of the M5Stack sensors use (they are quite cheap, so you could even use one as a donor and solder your sensor on to it).
https://docs.m5stack.com/en/unit/dual_button

#3 I've a feeling Seeed, DFRobot, Waveshare do a mini board to do such a thing, but probably equivalent to donor M5Stack part.

If you used the M5Stack Mini Dual Button Unit as a donor/connection board. I suppose you could have two inputs, pin 32 and pin 33, hide the pull up resistors, etc. Or the Proto units, perhaps an easier solder at home proposition.

Q) If it "can be powered from data line. Power supply range is 3.0V to 5.5V", would 5V power issue go away anyway?
https://shop.pimoroni.com/products/temperature-probe-ds18b20-arduino-compatible-adapter?variant=39365415829587
(NB Alt schemtic for circuit)

@arzaman I have the same model and version "V2.4 1420". Do you already have an answer to your question? I would like to know also.

it has been two years - i cannot find the calibration. can anyone help me ?

is it still not implemented or maybe i cannot find this?

I share m5 support answer on the topic

"UART0 is a specifically assigned for log print, it is encapsulated by ESP32 at lower layer. It will print the system log automatically and seems like we users are not permitted to shut it down, so we don’t recommend users to use UART0 as a normal UART series port, it will interrupt you communication. That why we connect it with CP2104."

to me it's clear the usage of UART0 ..less cleare why this two GPIO are routed to the M5bus since can't be used

I will use UART2 for my custom project with this assignment GPIO34=RX GPIO17=TX

Davide

@ckuehnel said in M5stack basic core battery power on issue (ip5306 strange power management):

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);
}

Hi, doesn't compile for me!!!

this is the arduino IDE output:

Arduino: 1.8.7 (Mac OS X), Board: "M5Stack-Core-ESP32, QIO, 80MHz, Default, 921600, None" Build options changed, rebuilding all /Users/AD/Documents/Arduino/libraries/M5Stack/src/utility/Power.cpp: In member function 'void POWER::powerOFF()': /Users/AD/Documents/Arduino/libraries/M5Stack/src/utility/Power.cpp:361:28: error: 'gpio_deep_sleep_hold_dis' was not declared in this scope gpio_deep_sleep_hold_dis(); ^ Multiple libraries were found for "SPI.h" Used: /Users/AD/Documents/Arduino/hardware/espressif/esp32/libraries/SPI Not used: /Users/AD/Documents/Arduino/libraries/SPI Multiple libraries were found for "SD.h" Used: /Users/AD/Documents/Arduino/hardware/espressif/esp32/libraries/SD Not used: /Users/AD/Documents/Arduino/libraries/SD Not used: /private/var/folders/f3/0kf10ljj6sj4q4twsw_vtxrw0000gn/T/AppTranslocation/395E70C5-F1F6-4076-AA11-9C132A2C6ACF/d/Arduino 1.8.7.app/Contents/Java/libraries/SD exit status 1 Error compiling for board M5Stack-Core-ESP32. This report would have more information with "Show verbose output during compilation" option enabled in File -> Preferences.

tnks

@arzaman said in M5stick-C connected but not reachable from UIflow:

Also mine now up and running !
thanks to M5 stack support

hope it will remain stable
point closed
Davide

0_1556959547085_57067176-fe44-471d-8d30-f16d7cec8bf9-image.png

The problem is down to the server host, every so often the server has a fit and brakes things.