eyetracker

I am having trouble getting my Pi4 to run on an HDMI TV, I have tried two separate TVs, multiple HDMI cables and 2 different HDMI to micro converters. It has worked in the past but only inconsistently, I can sometimes make it work by removing and reinserting but inconsistently, until I give up for a month and try again. But it's not useful if I can only get it running after futzing with it for 45 minutes first.

Relevant info:

Group CEA has 4 modes:
           mode 4: 1280x720 @ 60Hz 16:9, clock:74MHz progressive
  (prefer) mode 16: 1920x1080 @ 60Hz 16:9, clock:148MHz progressive
           mode 95: 3840x2160 @ 30Hz 16:9, clock:297MHz progressive
           mode 97: 3840

My tldr basic questions are:

1. Is there a limit to how many years QBI can carry forward? This is as is allowed today, I understand that the tax code can be changed for subsequent years.
2. Does it make sense to invest more heavily in REITs to offset the QBI?
3. Does it matter if the business is closed?

Details: business had net loss in 2021 and 2022, and was "closed" in early 2022 in the sense that no more income is expected as it shifted to purely W2, but the business category is not fundamentally different and licensure will be maintained. So it is possible that more business income may come in to change the situation, but as of now 2023 is not likely to need a Schedule C. The QBI deduc

You can't take the credit unless your contributions exceed distributions in the last 3 years, presumably to avoid people gaming the system to claim it. Makes sense. But what about if you inherit a retirement account and take a one-time lump sum, can you not claim the saver's credit in the next few years? Form 8880 line 4 puts "Distributions from an inherited IRA by a nonspousal beneficiary" under exceptions, but it's not an IRA (or military) but no mention of anything else.

Aside from the tax-related answer, conceptually: it also says "Distributions from a military retirement plan (other than the federal TSP). " Is there a reason for this? The wording is confusing - TSP isn't solely militar

I have measurements of the same spectral sources using two different devices and I'd like to equate them, but one has Y data output as W/sr/m^2 and the other mW/m^2/sr/nm; it can possibly go either direction but ideally I'd like to convert to W/sr/m^2. These are indeed per wavelength and not total radiance under the curve, I'm not sure if that means if per nm is implied in the first one? The X data is also largely overlapping but different ranges and sampling rates, so I can interpolate and truncate or even extrapolate if needed.

I'm trying to work out the math for conversions and I'm stuck. I can scale either empirically by multiplying/dividing by a constant but the constant is differen

I feel like this should be easier than I'm making it out to be but damn if I can't figure it out.

I have n variables with 1xm double vectors

a = 1:3;
b = rand(1,5);
c = -2;

Then I get the variable names

vNames = who;

I want to then create a 1x1 struct "s" with fieldnames as the variable names with contents the same as the contents. I've tried things like

eval(vNames{1})

which correctly displays the contents, and a loop

vals = [];
for i = 1:n
vals = [vals; eval(vNames{i})]
end
cVals = num2cell(vals, 2);

Gets me a nx1 cell array with the correct contents.

but I can't get all of them into the struct either through subscripts or looping. I've also tr

I bought a dual z (HICTOP, no belt) and installation was easy but I problems syncing the two so the gantry only moves a short distance before grinding. I'm guessing a lot of the problem is mechanical so I'm going to tweak that. But BTT relevant:

1. The hardware came with a jumper between the original z stepper connector and the new one. I've connected it that way. But the board also has I think two Z connectors (ZAM and ZBM) is it better to use those?
2. Do I need to recompile custom Marlin? I see two relevant sections in configuration_adv.h:
   1. X_DUAL_STEPPER_DRIVERS. Set to two? What about the resulting conditional variables, I don't think Z_MULTI_ENDSTOPS is relevant, I'm using