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Messages - konell

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Optics / Which achromatic lens to use for 1mm FOV?
« on: December 05, 2017, 07:52:43 PM »
We're using a relayed GRIN system, and our field of view is about 70% of the size we want it to be. If we're currently using a 5x15 mm achromatic lens, should we switch to the 5x10 mm version; will that solve the issue?

Electronics / Re: How to attach commutator?
« on: July 18, 2017, 05:40:11 PM »
Thank you!!!

Electronics / Re: How to attach commutator?
« on: July 14, 2017, 02:46:23 PM »
Found the cogsci stack exchange answer ( -- thank you. I have a few followup questions to that. What kind of coax connectors should we use? Something like these ( Also, when we solder the coax and commutator wires to the connectors, which parts should be soldered where? Should the coax be stripped so that the inner wire and outer braided shielding connect to different places? Thanks!!!

Electronics / How to attach commutator?
« on: July 13, 2017, 07:53:17 PM »
I currently have two commutators (2-channel and 5-channel) from Dragonfly, and I'm trying to figure out how and where to place them. Do I cut the coax near the SMA connector and solder the commutator wires to the inner wire and/or braided shield of the coax on each side of the cut? Is there a way to solder the commutator directly to the connector on one end and to the wire on the other? I wasn't able to find any sort of instructions online, but if a tutorial video or something exists that I don't know about, that would be great to have. Any guidance on how to start would be much appreciated. Thanks!!!

In the online instructions, it says that the achromatic lens should be flush with the aperture ring, but I'm having trouble telling when that condition is met. Is it the top or bottom of the lens flush with the top of the ring? What exactly should I be looking for when I check the alignment under the microscope. Also, I think some of our older scopes have the achromatic lens too high up in the body (right by the CMOS filter). Could this be the cause of some of our problems with our field of view being too small? Thanks!

I realize now I hadn't programmed the EEPROMs successfully. They work perfectly now, thank you!

I recently made some new DAQ boxes with the new version of the PCB and have been testing them out with a functioning miniscope. When I connect the miniscope to one of the older boxes w/ DAQ PCB v2.x, everything connects fine and I get clear images. However, when I use the newer boxes I don't get any video. All three lights are on and don't flicker. When I move the slider for the excitation LED, the console says that the power was updated, but the intensity on the actual scope looks about the same. At the beginning, it tells me "MINIscope must be connected to chang..." (can't tell what happens after that because the window won't expand) and I also get msCam frame grab errors. Any help would be much appreciated :)

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