I have just built 2 boards supplied by Paul in Netherlands, DS101 USB to Loconet Interface and the DS104 an I2C to 2 x PCA9685 boards, I added the LoconetMonitor to the DS104 Nano to see if commands from iTrain are received but I needed some Loconet cable so waiting for ebay delivery before I can test ... but the sketch, Paul is still developing the DS104 board sketch so be interested if anyone has succesfully already got a sketch as I wouldnt know where to start ... John