Miniscope V4 not triggering

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Fabio Marques Simoes Souza

Oct 3, 2022, 1:47:53 PM10/3/22
Why is the trigger not working? I want to send an external TTL trigger into the miniscope for synchronizing it with my behavioral task. I selected the option Triggerable in the control panel, and then it shows the button Record (Ext. Trig. Enabled). However, if I click Record (Ext. Trig. Enabled), it starts recording the frames anyway without really waiting for the external trigger. I tried to input a 3.3V or 5V input coming from an external TTL source into the DAQ trigger input -soldered accordingly with the following link- and it did nothing.



Eric Melonakos

Oct 4, 2022, 8:14:05 AM10/4/22
to Miniscope
Hi Fabio, once you select the Triggerable option, you don't need to click on the Record button. Just send the 3.3 or 5V (constant) input, and it should start recording. Then bring it back to 0V to stop the recording. The Record button is still there in the software in case you want to click to start the recording, but it's not needed.
Good luck,

Daniel Aharoni

Oct 12, 2022, 1:52:11 PM10/12/22
to Miniscope
I second everything Eric said.

Once you select the triggerable option, the software will begin recording on a low-to-high input transition and will stop recording on a high-to-low trigger transition. We had multiple requests to still allow for manual starting and stopping of the recording so that is why the manual buttons are still enabled.

David Protter

Oct 18, 2022, 1:49:26 PM10/18/22
to Miniscope
Interestingly, I spent yesterday trying to trigger recording just for a minicam with no miniscope. Id already validated triggering (from a Raspberry Pi, so 3.3v high), but was unable to trigger just a minicam. Going back to a config file for a cam and scope worked fine. Copying that file and removing the scope again didnt work. For whatever reason, the scope was required for the software to trigger. 
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