rosserial_arduino extend adc message

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hi, i checked out rosserial and extended rosserial_arduino/message/Adc.msg to hold 12 adc values instead of only 6.

Then i also made some changes to rosserial_arduino/src/ros_lib/examples/ADC/ADC.pde to make use of the newly added adc values.

Then i rebuild with catkin_make and catkin_install, then i build the ros_lib new in the Arduino libraries folder. There i can see that the class in file libraries/ros_lib/rosserial_arduino/Adc.h now uses 12 adc values.

Then i load my sketch onto the arduino and then start rosrun rosserial_python serial_node.py _port:=/dev/ttyACM0 . But then it tells me, that the md5 sums does not match ? One md5 sum is from libraries/ros_lib/rosserial_arduino/Adc.h, but i dont know where the second is from ?

Do i need to rebuild or modify some other file too ?

thanks for help

flo