nerdralph

4 ms·

31.
by nerdralph 9mo ago
Most residential 200A electrical panels use tin plated aluminum busbars. https://www.eaton.com/cr/en-us/catalog/power-connections/bus...
32.
by nerdralph 9mo ago
As a common-law legal system, I would expect Ireland to have something similar to Canada's Criminal Code identity fraud. 403 (1) Everyone commits an offence who fraudulently personates another person, living or dead, (a)
33.
by nerdralph 10mo ago
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
34.
by nerdralph 10mo ago
And TCXOs are surprisingly cheap. Less than $2 when I looked at some of Abracon's offerings.
35.
by nerdralph 11mo ago
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
36.
by nerdralph 11mo ago
It is rather long-winded, and ends with a donation request. I don't like that style of writing.
37.
by nerdralph 11mo ago
I had problems with Wise too. Here in Canada there at least is some federal regulation for money service providers.
38.
by nerdralph 1y ago
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 modul
39.
by nerdralph 1y ago
It is hard to set the posts with tight tolerances. I used angle brackets to get +/- 20mm of adjustment room.
40.
by nerdralph 1y ago
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.
41.
by nerdralph 1y ago
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 cost
42.
by nerdralph 1y ago
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
43.
by nerdralph 1y ago
Environment Canada has hourly historical data for many stations. Some may be daily. https://climate.weather.gc.ca/historical_data/search_histori...
44.
by nerdralph 1y ago
I was disappointed with how bad avr-gcc was at optimizing code. Here's one of several examples I found. https://nerdralph.blogspot.com/2015/03/fastest-avr-software-...
45.
by nerdralph 1y ago
In my younger years groups of friends would rent time on racing tracks in Ontario and Quebec. Mecaglisse and Shannonville tracks were a couple that I drove on, at speeds of over 220kph.
46.
by nerdralph 1y ago
Part of the problem is the different ways addresses are expressed throughout the world. I was born and grew up in Canada, and was confused when I started dealing with companies in China. Instead of street addresses, many are given by provi
47.
by nerdralph 1y ago
I've used OSRM and Arcgis for addresses in Canada. I think one or both of them have POI support in their APIs. https://route.arcgis.com/arcgis/
48.
by nerdralph 1y ago
I tried D several years ago, and liked the language. I didn't stick with it because of the lack of libraries compared to perl, python, C++, etc.
49.
by nerdralph 2y ago
I think schematics are easier to read than looking at a (fritzing?) breadboard layout. Discrete resistors aren't necessary for the buttons if you enable the internal pullups on the RP2040.
50.
by nerdralph 2y ago
When I traveled to KL in 2019 I was impressed with how open and tolerant it was. My wife and I were asked no questions upon entry. Our passports were stamped and we were told "Welcome to Malaysia". We went during Eid, and were
51.
by nerdralph 2y ago
Not as capable as Flea-Scope, but buck50 is another MCU-based oscilloscope and logic analyzer. https://github.com/thanks4opensource/buck50
52.
by nerdralph 2y ago
> Probably some development board with a microcontroller using Cortex-M33 would be the easiest to find and it should cost no more than $20 to $30. The Pi Pico 2 RP2350 has dual Cortex-M33 cores (and RISC-V), and costs US$5.
53.
by nerdralph 2y ago
I'm surprised RISC-V doesn't expose carry. Thanks for pointing this out. For embedded programming with AVR and ARM I often prefer ASM over C because I have access to the carry flag and I don't have to worry about C/C++
54.
by nerdralph 2y ago
What's the cost of annoying people trying to browse to your sites, some to the point where they'll just not bother?
55.
by nerdralph 2y ago
I don't bother with sites that have cloudflare turnstyle. Web developers supposedly know the importance of page load time, but even worse than a slow loading page is waiting for cloudflare's gatekeeper before I can even see the p
56.
by nerdralph 2y ago
OK, what you now call turnstyle. If I get one of those screens I just close the tab rather than wait several seconds for the algorithm to run and give me a green checkbox to proceed.
57.
by nerdralph 2y ago
As mentioned in other posts, the trick is using multi-color sprites to look like multiple single-color sprites. I did the scan line frequency calculations, and my though of changing the border color would not work. In one cycle the scanlin
58.
by nerdralph 2y ago
My guess is it is chasing the beam. Change the border color from black to your sprite color, then back to black again. The change takes a minimum of 4 cycles (store absolute), which I think explains the thickness of the numbers. Some cal
59.
by nerdralph 2y ago
I agree coding should start early. The design might look good, but might not be easy to implement, so you need to change the design. The statement sounds like something out of a book on the waterfall method of software development.
60.
by nerdralph 2y ago
> Very few abstractions exist in general application development. Just write the code you need. I don't try to foresee abstractions (premature optimization), but I often encounter them when adding to a codebase. A recent example wo

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