191–200 of 1001 posts
What is (or would be) the "Tsundoku" equivalent for Raspberry Pi? I started with Pi-Hole a few years back but ended up with a commercial paid DNS resolver. The timeline usually goes like this -- will stumble on another interesting video of Jeff Geerling, then spend the weekend tinkering with the Pi, keeps running, forget about it, found it to be not needed, plugs off and is lying around. [Tsundoku]( https://en.wikipe…
"raspberry pile"
No word on price. When Raspberry Pi first launched, this was the prime feature of the thing. Can we expect same price as the Raspberry Pi 4? (at the respective RAM level) Edit: found it here: https://www.raspberrypi.com/news/introducing-raspberry-pi-5/ So the 4 GB model is 60$, which is 5$ more than the 4 GB model of the Raspberry 4 when that was launched: https://www.raspberrypi.com/news/raspberry-pi-4-on-sale-now-.…
Raspberry Pi 5 8GB - US$80.00 (EAN 5056561803326)
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Not according to the video. 4 or 8GB.
From the product page: > LPDDR4X-4267 SDRAM (4GB and 8GB SKUs available at launch) This implies there will be either smaller or bigger SKUs at a later date. The 8 GB SKU of the Pi 4 wasn't available at launch, either.
https://shop.pimoroni.com/cdn/shop/files/PI_5_TOP_1500x1500....
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Did you read the blog post? :) "One of the most exciting additions to the Raspberry Pi 5 feature set is the single-lane PCI Express 2.0 interface. Intended to support fast peripherals, it is exposed on a 16-pin, 0.5mm pitch FPC connector on the left-hand side of the board. From early 2024, we will be offering a pair of mechanical adapter boards which convert between this connector and a subset of the M.2 standard, al…
> Did you read the blog post? :) As you keep spamming this here, did you read the HN Guidelines[0]? > Please don't comment on whether someone read an article. "Did you even read the article? It mentions that" can be shortened to "The article mentions that". [0]: https://news.ycombinator.com/newsguidelines.html
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I think they answer your question in the PSU section “Raspberry Pi 5 consumes significantly less power, and runs significantly cooler, than Raspberry Pi 4 when running an identical workload.”
Not on the linked page. "Will my Raspberry Pi 4 power supply work with Raspberry Pi 5? "Raspberry Pi 5 is a higher-performance computer than Raspberry Pi 4, and you may have problems using an under-powered supply. We recommend a high-quality 5W 5A USB-C power supply, such as the new Raspberry Pi 27W USB-C Power Supply." The question asks about power requirements, but the answer is about performance? The first time I…
Ermmm, what?
Out of curiosity, does 5V/5A USB-C changer common? All of my USB-C Chargers has 5V/3A only.
5V/5A means at least 25W. Plenty of chargers at that level and above on Amazon.
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I've gone to unholy ends to syncronize large herds of Pis using a patched NTP server and several other dirty tricks. The RTC is a huge deal to the people who care about it.
Won’t you still need an NTP or a GPS time module unless the RTC has a battery backup? How many applications would you have where timing is critical but you won’t have an external time reference that would be still viable without a guaranteed power backup?
Here's the deal: RPiThe first thing we did was deliver 12V down the wire with a high quality power supply. Then we used UBEC buck converter modules (intended for RC quadcopters) to deliver power directly into the Pi via its pins.
However, even now you're just chasing physics. There's no way to send a command to all of the Pis to do something right now. Instead, we tell all of them to do something at a very precise moment in about three seconds. In our case, this meant writing a very low-level C program to listen for raw UDP messages and trigger the camera module at the hardware register level.
The only way to verify that it was working as well as we believed it did was to create a reference clock. We had a friend build a 20 LED timer that would count 10ms and 1ms increments.
We achieved < 1ms syncronization across 70 Pis in this manner.
Five generations in and it finally gets radical features such as: - a power button - a real time clock Crazy it took this long but finally, seriously. Downsides here are that it might need more active cooling whereas previous generations worked without it. Also, ugh: > Gigabit Ethernet, with PoE+ support (requires separate PoE+ HAT)
> Gigabit Ethernet, with PoE+ support (requires separate PoE+ HAT) isn't this just like the 4?
I won't do PoE without reliable official hardware.
will it be unobtanium?
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Won’t you still need an NTP or a GPS time module unless the RTC has a battery backup? How many applications would you have where timing is critical but you won’t have an external time reference that would be still viable without a guaranteed power backup?
Nobody said anything about not having NTP in the loop! Here's the deal: RPi The first thing we did was deliver 12V down the wire with a high quality power supply. Then we used UBEC buck converter modules (intended for RC quadcopters) to deliver power directly into the Pi via its pins. However, even now you're just chasing physics. There's no way to send a command to all of the Pis to do something right now . Instead,…
