Hello @seguidor777 the M5Core2 talks to the 4 channel relay module via I2C which only requires 2 wires. Check out the documentation. Also have a look at the example. Thanks Felix

for benefit of community, I could solve myself: changed Onewire.h line 134 from addr to addr2. And it works 🙂

I think it works. I am just using Serial2.begin(1500000); for the camera and Serial seems to be free.

Hello @CodeGrue thank you for letting the community know. I've checked the touch firmware version (w/o actually updating it) of two of my M5Core2s and both report fw v0.0.0. Do you remember if the touch firmware update actually ran through successfully? I wonder if maybe the firmware isn't broken, but the update process failed. Thanks Felix

@digs71 Cool

@felmue, thanks, also for the ```-tip!! After years of programming the ESP32 it takes a lot of time to get familair with the Core2 specifics

Hello @fly4fun thank you and thank you for reporting back. I am glad you got it working. @m5stack: Please check out this pull-request. Thank you. Most of those functions return true if successful (and false otherwise). Thanks Felix

Hello @AEisele55 on M5Stack you can select Setup - Switch Mode - USB Mode and reboot. However on M5Core2 this option is missing. Setup doesn't have a Switch Mode entry.(Tested with UIFlow firmware v1.10.6) Thanks Felix

My core2 makes a noise when i install the factory software using arduino or the built in burner, also it does nothing, i can’t seem to get it back onto the device, what gives? I’ve connected to serial port, burned the test and then all i hear is a low pitch noise… Anyone know about this?

Hello @HappyUser you are so close. Right now you are setting up both devices as I2C masters. However M5Atom needs to be an I2C slave. To do this the first parameter of Wire.begin() needs to be the slave address. Try this: Wire.begin((uint8_t)I2C_DEV_ADDR, 26, 32); Thanks Felix

@awoodbridge hello i am also facing same issue. did you get the solution ?

So with a bit of research, I develop this simple code that makes exactly what I was asking here: #include <M5Core2.h> #define DEVICE_TIMEOUT 120000 float Time_bat = 0; void setup{ M5.begin(); M5.Axp.SetBusPowerMode(1); } void loop{ M5.Lcd.drawString(("Battery: " + String(M5.Axp.GetBatteryLevel())), 0, 120, 2); if(!M5.Axp.isVBUS() && !M5.Axp.isCharging()){ M5.Lcd.drawString(String((millis() - Time_bat)/1000,0) + " ", 1, 154, 1); }else{M5.Lcd.drawString("Feeded ", 1, 154, 1);} if(!M5.Axp.isVBUS() && !M5.Axp.isCharging()){ if(Time_bat == 0){Time_bat = millis();} if((millis() - Time_bat) > DEVICE_TIMEOUT){M5.shutdown();} }else{ Time_bat = 0; } } Hope it helps someone!

It worked! Fixed problem eheh!

@teastain Thanks, that was what I was looking for. I got it to compile/load after installing the M5Core2 by M5Stack library. I agree with 'Brilliant and un to watch'.