Articles for DMXking LeDMX4

Frequently Asked Questions (FAQ)

It can be hard to start/stop the recorder at the exact moment. There are a few tricks to make this easier, one is to use a record trigger, basically a separate universe/channel that is only used to start/stop the recording (documented in the recording manual). Another option is to take the capture files (which are standard Wireshark files) and run a post-processor on the files to trim the capture data at a loop point. There is an open source project that can assist with that, see this link:

Each port (the LeDMX4 has 4 ports) supports 680 RGB pixels or 512 RGBW pixels, for a total of 2,720 RGB or 2,048 RGBW pixels.

Start by making sure your power supply is properly connected and that you can measure the correct voltage on the pixel connectors. Then verify that you have the data input on the pixels (marked DI) connected to the LeDMX4, not DO (which is Data Out). Also try all ports (make sure you're sending data to the correct universe id) and if possible test a different strand of pixels.

170 pixels use 510 channels (one universe). The LeDMX4 will use the consecutive universe(s) if you configure more than 170 pixels in the config utility, but you need to send data for those universes then (the DMX Display test feature only sends data to one universe at a time, selected under the ArtNet address)

This is most likely due to using non-approved/tested SD cards. Some SD cards have inconsistent timing when reading sectors, which combined with the lack of significant buffers and processing power of the embedded DMXking products can cause these artifacts. For error-free operation you should only use cards from the approved list. As a workaround you can enable the option "Hold Last Frame", but note that there will still be a short delay.

The DMXking devices always listen for both ArtNet and sACN/E1.31 data. Both protocols are perfectly fine to use, sACN is newer with advanced features like priority. ArtNet on the other hand has a discovery mode that is handy where you can scan the network to see what devices are available. ArtNet is also using broadcast where sACN is using multicast by default, however both protocols can use Unicast.

Try to disable WiFi (temporarily) and then restart the Config Utility. Sometimes the mac gets confused on which network interface to broadcast the discovery packets (that are used to find the devices on the network). Then you can configure the IP settings and complete the configuration. Once you have the IP settings completed you can re-enable WiFi.

This is the current list of approved/tested SD cards (as of Oct 2020):

  • Samsung PRO+ (32GB, 64GB)
  • Samsung PRO Endurance (32GB, 64GB, 128GB)
  • Kingston Endurance (32GB, 64GB, 128GB)
  • Strontium Nitro A1 (32GB, 64GB, 128GB)
  • SanDisk Extreme Pro UHS-II (32GB, 64GB, 128GB)

This can happen if you accidentally connected the pixel data wire to the CK connector on the LeDMX4. The pixels will then think the clock signal looks like data and be ON all the time. This can also happen if you have WS2813 or similar pixel types that have a backup (labeled BI) input, and you connect this to the CK connector. BI should either be connected together with DI to DA, or to GND.