Test setup
The test setup was carried out on a prototyping plate, then tested.
At this point the commands are sent through a serial terminal on the UART (REALTERM in my case). The behavior is tested, and the value of the components adjusted.
In situ testings
In order to validate the assembly, it was tested in my garden. PHD2 recognizes and pilot it, great new ! The deviation of the chosen star seems to be well caught. I couldn't test for long, since everything is balanced on a stepladder ...