Photon feeder not recognised in OpenPnP

[Mihai Calin]

Hello everyone!

I have the situation like this: inside the debug app from web (debug.opulo.io) I can see the feeder in any slot from 1-49 position, but when I go to OpenPnP app I cannot find any feeder. I have deleted all the feeders and added 2 photon feeders but without any results. Attached are the log and machine.xml from OpenPnP app.

Long story

I have build a PnP machine as kinematics Core XY (inspired from Alan Designer) wich can accomodate 112 pcs of 8/12mm feeders. The mainboard is DevEBOX - STM32F4VX_M with an PCB adaptor to connect everything to it. On the board is running the Marlin 2.1.3-beta3. The adaptor PCB and the ports used to connect the peripherals is made as the rev04 of the Opulo mobo (if is required I can post the schematic). The version of OpenPnP is 2.6_2026-03-01_12-37-59.5bd404c, that is installed in windows 10 and in use with the machine. The motion of axes, cameras, lights and vaccum pumps and the vaccum sensors are running correctly.

[Mihai Calin]

Solution to this problem: 
Always DISABLE the "Compress G-code", because otherwise, when commands are sent to RS485, that compresion will delete the spaces and will result in a not desireable command like I had.