@Triet said in Communication jamming between PanelDue and Duet 2 WiFi:

I am using a BLV Cube delivered as a kit by FYSETC , which includes a Duet 2 WiFi board and a PanelDue 5 Display. It also features Neoring LEDs controlled by an Arduino mini pro module, which is connected to the Duet:
https://www.fysetc.com/en-de/products/fysetc-blv-led-light-control-panel-arduino-mini-pro-module-for-blv-mgn-cube-3d-printer
The PanelDue is connected to the Duet via flat ribbon cable. The other 4 pins connected is used for the Arduino. The Arduino LED Controller is hooked on the transmit wire of the Duet, and depending of the data it captures, the display of the LED is adapted.

The display was working OK at first but after upgrading the firmware of all components to the current version, the PanelDue can only send data but not receive. Only if I disconnect the Neoring controller then the PanelDue can send and receive data as it should.

If anyone has an idea how to overcome this issue I would very much appreciate. I think there should be a fixed firmware for the Arduino board somewhere.

I assume that the interference is due to different voltage levels. If that is the case, would an optocoupler be a solution?

Thanks in advance.

I have the same problem with my fysetc kit bought in december 23. My fix is to use one of the three switches to power on/off the neopixel board. When off, the paneldue works like it should, i can use makros and both sd slots. When on the neopixels show the status, but the paneldue works not correct.