Hi there. I'm just equipping myself for wireless astro photography and was pointed at Indi, which is exactly what I was looking for. I will shortly have a Nexstar Evolution 8" telescope, a ZWO ASI120MC camera and was planning to use a Raspberry Pi as the controller at the telescope running Indi, powered from the Nexstar evolution's USB interface, and a Wifi interface to a PC running Ekos in a nice warm house ![:-)]( ":-)")
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One worry I have, though, is speed of access to storage. I've been told that 50 to 70 MB/s might be required to run 640 x 480 video at 50 fps. The SD card I have chosen will do 10 MB/s writes when it is in the Pi and I can see that the fastest SD card on the Pi could do 20 MB/s writes. I could use an external USB HDD but this article suggests that it won't be much faster, especially since the camera feed will come over USB also. The other alternative would be to switch to a Banana Pro board, or similar, which has an on-board SATA interface.
So, my questions are:
1. Should I worry about transfer speed for image storage?
2. If so, can anyone recommend a Pi-like board with an on-board SATA interface, preferably one that Indi has been used with?
Rob
.One worry I have, though, is speed of access to storage. I've been told that 50 to 70 MB/s might be required to run 640 x 480 video at 50 fps. The SD card I have chosen will do 10 MB/s writes when it is in the Pi and I can see that the fastest SD card on the Pi could do 20 MB/s writes. I could use an external USB HDD but this article suggests that it won't be much faster, especially since the camera feed will come over USB also. The other alternative would be to switch to a Banana Pro board, or similar, which has an on-board SATA interface.
So, my questions are:
1. Should I worry about transfer speed for image storage?
2. If so, can anyone recommend a Pi-like board with an on-board SATA interface, preferably one that Indi has been used with?
Rob