I have an older Arlo kit with the HB25's I do have a Activity Board WX with out the wifi module though. I got all the calibration and drive libraries from chrisl8's github here: https://github.com/chrisl8/ArloBot/tree/master/OldArloBotParallaxLibrariesForHB25
. I run the arlo_calribrate.side and get this result: https://goo.gl/photos/XncwU6PQLFmxWdaA8
. I then flash any drive code to eeprom or ram and it locks the program and p26, p27 are lit up. Any ideas what could be happening? BTW i did swap the encoders and drive wires and calibrated again to see if it was the pins some how but it calibrates the same just reversed on the wheels.