I got my diagnosis shortly after the DSM-5 release but my psychologist also gave me the DSM-IV Asperger's diagnosis at my request. I tell people I'm an Aspie, and that it is considered to be on the autism spectrum. I prefer the Aspie label because it is more specific. My interpretation was that the DSM-5 grouped it under autism spectrum distorders. I've never met a psychologist or psychiatrist that considered the autism spectrum to be a single condition.
Readit Newsnerdralph commented on Autism should not be treated as a single condition economist.com/science-and... · Posted by u/bookofjoe
nerdralph commented on Most Stable Raspberry Pi? Better NTP with Thermal Management austinsnerdythings.com/20... · Posted by u/todsacerdoti
You can go further and replace the cheap Pi oscillator crystal with a proper TCXO, as others using them for NTD have done and documented: https://raspberrypi.stackexchange.com/questions/74482/switch...
That should give you 4-5x less drift than his results (though you could pair the techniques for even better figures)
And TCXOs are surprisingly cheap. Less than $2 when I looked at some of Abracon's offerings.
nerdralph commented on Jakarta is now the biggest city in the world axios.com/2025/11/24/jaka... · Posted by u/skx001
Other than Singapore. I am not sure why SE Asian cities aren't going as all in on mass transit like China. Jakarta has a single subway line for 42 million people. They have some light rail line and buses. If you compare this with Tokyo, Shanghai, Beijing its really night and day.
KL has subways. Even better is the KL city bus network which is free, air conditioned, and has free wifi. Despite Malaysia being a nominally muslim state, I found it multicultural and tolerant. If it wasn't for the heat and humidity, I'd consider it a great place to retire.
nerdralph commented on Ditch your mutex, you deserve better chrispenner.ca/posts/mute... · Posted by u/commandersaki
It is rather long-winded, and ends with a donation request. I don't like that style of writing.
nerdralph commented on A change of address led to our Wise accounts being shut down shaun.nz/why-were-never-u... · Posted by u/jemmyw
I had problems with Wise too. Here in Canada there at least is some federal regulation for money service providers.
nerdralph commented on Cheap DIY solar fence design joeyh.name/blog/entry/che... · Posted by u/kamaraju
Well it's not a surprise that green energy fanatics act fanatic, is it?
Obviously there is a solution, but I'd say the vast majority of either fanatics or normies tinkering with the idea of installing a solar roof know anything about those severe problems.
I've installed one recently. I've asked every prospective contractor for the job beforehand about whether I should get some mesh around it. All said they never heard of such a problem. And if virtually all the people that installed all these roofs in your area tell the same story, what do you do?
Half a year later the whole block turned into Guano dump and once the plague is there, mesh around the panels won't do – you need to install spikes as well, because as long as not every solar roof in your vicinity is "meshed" these colonies are still going to use your roof for their "business" as well.
EDIT: Since you've mentioned ROI, the premium for installing the panels with the mesh directly would have been around 500€, having to do it separately (plus the additional spikes) cost 2500€
We install rodent guard mesh on all our residential rooftop installations. The Canadian Electrical Code requires it in most instances.
Rule 64-210 5):
Where the dc arc-fault protection referred to in Rule 64-216 is not located at the module, photovoltaic source circuit insulated conductors and cables installed on or above a building and installed in accordance with Subrules 1), 2), and 3) shall be provided with mechanical protection in the form of an enclosed raceway or other acceptable material to protect against damage from rodents.
nerdralph commented on Cheap DIY solar fence design joeyh.name/blog/entry/che... · Posted by u/kamaraju
I wonder if you couldn't do something incredibly simple like get some pressure treated 4x4 posts and use a router to make shallow slots for the panels to sit in. Plant them the right width and run a 2x4 along the bottom to let the panel rest on it.
What is it about solar panels that makes everyone want to use these really expensive mounting solutions? Is it just because they're trying to engineer a full 30 year lifespan right from the start?
You will still need the conduit for the wire of course, at least up to the inverter. That will add up pretty quickly if your mounts are spread out.
It is hard to set the posts with tight tolerances. I used angle brackets to get +/- 20mm of adjustment room.
nerdralph commented on Cheap DIY solar fence design joeyh.name/blog/entry/che... · Posted by u/kamaraju
I used 605W LONGi TOPCon panels for my vertical PV experiment. If they are too tall, 440-450W JA or Jinko TOPCon panels are 176cm.
Ditching the rails and bolting to the panel mounting holes with galvanized angle is a lot cheaper.
nerdralph commented on Vertical Solar Panels Are Out Standing hackaday.com/2025/09/25/v... · Posted by u/lxm
We need more data on bifacial performance in order to simulate the performance. I've done some experiments with vertical bifacial TOPCon panels, and the lower production vs 45-degree tilt seems to be offset by the lower mounting costs.
I run a solar company, and for ground mount systems the cost of the frames and foundations is more than the panels. With vertical PV it doesn't matter if power production is maximized, what matters is return on investment.
nerdralph commented on Solar panels + cold = A potential problem linspyre.com/ecoholics/te... · Posted by u/behnamoh
Calculating temperature correction is in both the NEC and CEC. Here's the CEC version:
64-202 Voltage of solar photovoltaic systems (see Appendix B)
1) The maximum photovoltaic source and output circuit voltage shall be the rated open-circuit voltage of the photovoltaic power source multiplied by 125%.
2) Notwithstanding Subrule 1), the maximum photovoltaic source and output circuit voltage shall be permitted to be calculated using a) the rated open-circuit voltage of the photovoltaic power source; b) the difference between 25 °C and the lowest expected daily minimum temperature; and c) the voltage temperature coefficient as specified by the manufacturer.