Long exposure time

[theMenonlab]

Hi Ximion,

I am attempting to modify Pomidaq so that I can image with longer exposure times and lower frame rates for imaging dim fluoescence. I have been successful with modifying the UCLA miniscope daq by changing the following lines in videoDevices.json. This worked for down to 1.5fps. Unfortunately when I try the same fix with Pomidaq and miniscopes.json the change was unsuccessful even after recompiling with cmake. Do you know how I could implement this change in Pomidaq and it's very useful Python interface?

displaySpinBoxValues":["1.5FPS", "2FPS", "5FPS", "10FPS", "15FPS", "20FPS", "25FPS", "30FPS"],
"displayTextValues": [1.5, 2, 5, 10, 15, 20, 25, 30],
"outputValues":[65000, 50000, 20000, 10000, 6667,5000, 4000, 3300],
"startValue": "1.5FPS",

Thanks,
Al Ingold

[ximion]

What did you do to try to implement this change in PoMiDAQ?
If the hardware can actually do what you want (it should work fine...), then all you would actually need to do is edit https://github.com/bothlab/pomidaq/blob/master/libminiscope/miniscopes.json to allow the new limits for your Miniscope, and then recompile PoMiDAQ.

[theMenonlab]

It seems like you agree with the approach I have been using. When I tried modifying miniscopes.json and recompiling, Pomidaq and the python commands didn't seem to change frame rates at all. Maybe I was recompiling incorrectly. I will try again on Monday.