Onstep telescope control

I am using the Onestep telescope control in conjunction with a Raspberry PI and the Astroberry Server and an old refurbished EQ-5 (when times come, I will post a reference for the project here).

Max PCB v1.135

Teensy 3.6 and INDI

After dealing with a lot of trouble getting teensy to connect with EKOS/INDI (see Astroberry Server), I had to do the following things on my astroberry server:

1. Problems with teensy connecting to modem manager:

• https://askubuntu.com/questions/1034495/arduino-over-dev-ttyacm0-recognized-but-on-group-tty-instead-dialout-ide-fails

Uninstall modem manager (it is not needed anyway until you like to use an usb modem):

sudo systemctl stop serial-getty@ttyACM0
sudo systemctl disable serial-getty@ttyACM0

and

apt-get remove --purge modemmanager

2. In any case install the udev rules!:

• https://www.pjrc.com/teensy
• https://www.pjrc.com/teensy/49-teensy.rules

I use these special rules which ensure, that the teensy always get the same device address: "/dev/onstep":

• https://www.indilib.org/forum/development/1406-driver-onstep-lx200-like-for-indi.html?start=144#23792

ATTRS{idVendor}=="16c0", ATTRS{idProduct}=="04[789B]?", ENV{ID_MM_DEVICE_IGNORE}="1"
ATTRS{idVendor}=="16c0", ATTRS{idProduct}=="04[789A]?", ENV{MTP_NO_PROBE}="1"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="16c0", ATTRS{idProduct}=="04[789ABCD]?", MODE:="0666" SYMLINK+="onstep"
KERNEL=="ttyACM*", ATTRS{idVendor}=="16c0", ATTRS{idProduct}=="04[789B]?", MODE:="0666"

So you can use as teensy device in Ekos for the LX200 OnStep:

/dev/onstep 

Indi driver

There is an interesting thread about the Indi driver LX200 Onstep in the indilib forum.

• https://www.indilib.org/forum/development/1406-driver-onstep-lx200-like-for-indi.html?start=180