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Cake day: June 13th, 2023

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  • 3.53V on input, 2.61V on the output.

    There’s your problem! The BLE chip isn’t getting enough voltage, likely because you’re overloading the port with that device requiring more current than the NES port can supply…

    I don’t know enough about the NES to walk you through how to mod it to increase the available current, and I’m unfortunately not seeing any immediately available guides on the problem your facing but your two options would be to see if there’s some current limiting inside the NES for those ports (and risk full device brownouts, overloading, damage to power further upstream) or isolate the existing power rail and essentially replace it with the USB power adapter… Or just use the external power adapter…

    From what I got, the SNES, N64 & GameCube controller ports are outputing 3.3V directly, not 5V.

    Doing a quick google, this excerpt about the GameCube is enlightening:

    There are two power rails on the connector, a 3.43V supply that is probably used for the logic, and a 5V supply that appears to be used to power the rumble motor (and perhaps logic also).

    I’m willing to bet the 5V for the rumble is what is being used to power that module as it had significantly higher current capacity and would explain why it works on that device but not the NES.


  • Given that the Blueretro is taking 3.3V apparently, is it possible to step down from 4.6V to 3.3V instead? Is it wiser than stepping up?

    That’s what the AMS1117 you identified does! One of the pins on that IC will be the 4.6V input, one will be the 3.3V output. Looking at the datasheet it has a dropout (minimum vin-vout) of 1.3V meaning that voltage regulator doesn’t have much margin…

    Power issues/brownouts do seem like a possible explanation. Great job at tracking the issue down as far you did, but I think it’s a bit to early to jump to the conclusion that that is definitely the issue.

    • What’s is the voltage you measure on the AMS1117?

    • Does the voltage you measure change when you connect via Bluetooth?

    • Do your measurements change when USB powered?

    • Does the 4.6V output from the controller drop when you connect over Bluetooth?

    • Are you measuring the ports when something is connected or when the ports are open?

    • Does your blueretro work on the ports of the other NES devices?

    My hunch is the ports don’t output enough current for reliable Bluetooth which isn’t going to be fixed without some NES surgery… You might be better off just using the USB power.



  • Also the definition of ‘gay’ and ‘gayest’ is poorly defined. This assumes that gay is some sort of scalar, where in reality it’s a projection from a multidimensional ‘queerspace’ that can change the appearance of the spectrum wildly depending on the methodology the one projecting uses.




  • Except that’s not even how most bus systems work because most of them are majority funded by taxes with fares originally meant to serve as a stopgap but then slowly converted into a profit engine (usually after privitization). Fares are a way to gatekeep a service which your taxes already pay for, which I would argue, is by itself a form of theft.

    As an example check out the latest MTA report only 26% of funding comes from fares, and that ones a bit in the higher end from what I’ve seen (NYC public transit, picked as the example a it’s recently been in the news for issues with fare evasion)

    All that aside, it’s also worth noting that fare increases are extremely unpopular and it’s not that easy to increase them without potential serious backlash (ie the mass protests in Chile a few years back that were in part set off by the fare hikes.)



  • More abstractly what you’re doing with the resistor is creating a very crude linear regulator, which is fine for most applications and if you’re careful about keeping your source voltage close-ish to the forward voltage of the LED this method can be fairly efficient.

    Using an active constant current supply (as an example or many dedicated LED driver ICs do something very similar) can be marginally better as it allows you to reduce the waste from the linear regulator.

    However, if efficiency is what you really care about you’ll need to go with a switching regulator. Here’s an app note going over the basics of that approach. and again you can usually find dedicated ICs for that approach.

    Overall I’d recommend doing a detailed power budget and really seeing whether it’s worth the cost/trouble of implementing that because while you are correct it is usually more energy efficient it can be significantly less labor/material/maintenance/longevity efficient (hence the prevalence of the humble resistor…)


  • The numbers presented are funny.

    Global carbon dioxide emissions hit an all-time high of 36 billion metric tons last year.

    Discussing Occidental’s plants:

    Powered by solar energy, and have the potential to capture and sequester 500,000 metric tons (0.0000005 billion metric tons) of carbon dioxide per year.

    Which then they say they plan on building more of said plants:

    Occidental said it planned to build 100 facilities, each capable of capturing 1 million metric tons of carbon dioxide a year

    The annual amount captured magically doubles bringing it up to 0.000001 billion metric tons per plant and 0.0001 billion metric tons total annually.

    It really seems like we should listen to the Vicki Hollub, Occidental’s chief executive, when they state the real purpose of direct air capture which could:

    “preserve our industry. This gives our industry a license to continue to operate for the 60, 70, 80 years that I think it’s going to be very much needed.”

    This is ignoring their main usage of that 0.0001 billion metric tons is for oil extraction thus increasing the 36 billion metric tons.

    In other words shame on the NYT for burying the lead and being deceptive with their numbers.

    (@facedeer, I’d be curious to get your take on this article)


  • Right and I linked that article because it’s functions as a media literacy litnus test. It takes the viewpoint of the CEO and the scientists as equally valid, and you did get the main points, but you missed the lead that was buried:

    A paper he coauthored last year in Nature Communications, using the massive sargassum seaweed bloom in the Atlantic in recent years as a model, concluded that seaweed farming in the ocean could even become a source of increased carbon dioxide. That’s because the seaweed competes for nutrients with other carbon-sucking species like phytoplankton, among other complex biogeochemical feedback effects.

    Which if you actually look at the paper from the scientist (and ignore the bullshit from the CEO):

    Ocean afforestation at the scale of Sargassum growth in the GASB during 2018 could contribute −0.0001–0.0029 Gt CO2 of CO2 removal, if all of the seawater CO2 consumed through biomass formation is balanced by permanent influx of atmospheric CO2.

    In other words, carbon source to negligible because it kills the photoplakton was already doing that, and doing it more efficiently (albeit at a lower biomass). The paper also, briefly, touches on other concerns (where we get a nice crossover with solar radiation modification) which it unfortunately doesn’t delve much further into:

    Furthermore, we estimate that increased ocean albedo, due to floating Sargassum, could influence climate radiative forcing more than Sargassum-CDR.

    It makes climate change worse because it acts as a potential net CO2 source, requires maintenance and human intervention to maintain, destroys the local ecosystem which was doing carbon sequestration in the first place, and lowers the ocean albedo thus increasing radiative warming.

    If you want to talk SRM instead the oft cited paper is this one However the final line is the important one:

    The sobering reality is that unanswered questions such as these will remind the research and policy communities that relating climate response to anthropogenic perturbations is still a long way from being an exercise in engineering design.

    As it was published in 1992 a lot of the questions it left at the end have answers now, and there have been attempts at some engineering design. Why don’t you try to find one you think is a good potential and we can drill into its possible pros/cons (warning that meteorological stuff gets real math heavy, real quick).