No data about m365_dashboard HOT 13 CLOSED

I'm using the diode and 220ohm resistor in TX line and another 220ohm resistor in RX line and working fine (i prefer to limit any current on both pins).

from m365_dashboard.

Post a picture of your wiring and diode/resistor position

from m365_dashboard.

I have the same problem. Pressing the adrduino reset button starts and does not function again when the power is cut off(no data)

from m365_dashboard.

Hi guys,
this is 100% a hardware problem with the connection between the bus and controller.
Pressing any buttons won't work, since is does not change anything about the data.
If you use an ATMega32U8-based board - double-check the connection (diode and resistor) and ensure the value is correct (100-150 Ohm, not 150K! :) )
If you use a board with Mega328P - ensure that the pins are not puled down by the USB-TTL converter. If you have a board with that, it's advised to use SoftwareSerial on another pins (e.g. 2-3) rather than the hardware Serial.

from m365_dashboard.

I checked the diode polarity, the ohm resistance, tried with another board. Now "Bus not connected" screen shows, and can't turn off the M365 until I'm not plugging out the cables. But the screen not flickering, and not rebooting.

from m365_dashboard.

Check the previous @NetBUG reply.
You are using a NANO board with USB, the USB-UART chip uses the same TX and RX pins that you are trying to use for the M365 communication. The standard assembly uses an Arduino MINI tbat doesn't have USB.

from m365_dashboard.

Okay, thx! I'll try it with arduino without usb on monday!

from m365_dashboard.

As described by @NetBUG you can use software serial port on other pins or simply cut the traces fom TX/RX pins to the USB chip and use bootloader with an FTDI device or ICSP method

from m365_dashboard.

from m365_dashboard.

is the diode and the resistor correct? @smidak

from m365_dashboard.

Yes, 2x220ohm+ TX diode😭

from m365_dashboard.

Yes, 2x220ohm+ TX diode😭

when you are connecting it all like this, doesn't the power rating of the resistor change? From what I can see they are in parallel and I think it changes the power rating

from m365_dashboard.

They are not in parallel. One is for tx pin and the another one for rx pin. By this way If you accidentally short any pin the total current will not damage the board. Max current can be 5v/220ohm=23mA. Arduino pins are capable of that current on any i/o pin.

from m365_dashboard.