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Hello again, I have another question: In your old version with UDE magjack you've implemented 4 capacitors. What are these for? And why did you reduce the capacitor number in the newer version?

Oh wow...that's not fair! I've spent hours for finding the problem and you are solving the problem in minutes. :p Thanks a lot Paul! So my fault was the pin-mapping. One more questing: In our case T+ of the magjack has to be connected to T+ of the Teensy-Board? Because in UART its Tx to RX.

Hi there, I designed a PCB-Board to transfer informations from a USB-Scanner via MQTT to a Server. At first glance, this is not a complex task. But: I gradually realized that Ethernet is not as trivial as I thought it was. As a basis for my PCB design I used the Ethernet module available on...