Skip to main content
FW version: Stable

Why do I get "Could not discover any node(s)"?

This can indicate several problems and generally says that the connection interface is working, but the problem is somewhere else.

Could not discover any node(s)

Hardware problems​

  • Double-check the wiring
  • Only USB will work without a power supply. Other interfaces need the device to be powered.
  • For the CAN bus, check if the termination resistors are in place and the bus is properly terminated.
  • For USB do not use a USB hub. We observed connection problems with some USB hubs. (mostly during the firmware update)

Software (settings) problems​

Improper address​

The widespread problem is that the device and target addresses in the Launchpad options differ. Please ensure your target address is the same as the device address.

Default address
  • Controller: 0
  • Display: 6
  • BMS: 4
tip

You can also use addr= -1. This is a broadcast option. The device will respond to any address.

launchpad

Communication speed mismatch​

This is the case mainly for CANbus, where the speed is adjustable. Please ensure that the device speed is the same as the settings in the Launchpad options.

CAN speed

The most common CAN speeds
tip

If you are not sure about the speed setting in your device, connect to the device via USB and check the settings: How to read CAN speed settings

It is a comma !

Also, sometimes there is a typo in the option bracket. Please ensure the arguments are divided by a comma "," and not by a dot "."