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News about Raspberry Pi 6 and Microcontroller Development

jeffgeerling.com

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Re: News about Raspberry Pi 6 and Microcontroller Development

#81

Post by bradfa »

hedora wrote: post #69
sq_ wrote: post #20

Earlier quoted context omitted.

A physical TPM with their overall high-quality software support would be awesome. I've spent far too much time messing around trying to get TPMs working over SPI or I2C to meet security requirements with 4Bs and 5s over the years.

You do know those are trivially bypassed with a signal processor, right? If physical access is outside your threat model, that's OK, but it makes (for example) the forced Win11 upgrade for DRM^H^H^H boot integrity enforcement seem ridiculous. https://pulsesecurity.co.nz/articles/TPM-sniffing

The article you link to explains how to defeat the sniffing with TPM 2.0. But also, there’s no reason a physical TPM has to be a separate IC package.

Re: News about Raspberry Pi 6 and Microcontroller Development

#82

Post by kllrnohj »

hedora wrote: post #66
tredre3 wrote: post #59

Earlier quoted context omitted.

> I looked into using an N150 for a NAS [...] Lo-and-behold, they all have crazy PCIe / memory subsystem data corruption issues. Source? I've never had a single problem with PCIE on N100/N150/N200. I have had a ton of issues with drive corruption on the pi, both via USB3 and PCIE.

https://www.phoronix.com/news/Linux-6.4-Lands-PCID-INVLPG https://forum.opnsense.org/index.php?topic=48343.0

so a single 3 year old errata for the n100 that was long since patched?

Re: News about Raspberry Pi 6 and Microcontroller Development

#83

Post by Scene_Cast2 »

mrlambchop wrote: post #15
peteforde wrote: post #11

Pi's refusal to drop a USB-C on Pico due to cost increases is a terrible call IMO. I seriously cannot fathom being someone doing development who wouldn't pay $0.50 extra to purge the last micro USB from their desktop.

A very small point, but pulling from a feather form factor BOM to compare. $0.12 for microUSB female connector (rated 1A) $0.26 for a USB-C female (rated 3A). Needs 2 x resistors ( I think the power capabilities are the biggest item. If you want to pull higher current from a laptop for development or supply from a wall, you have to switch to USB-C. I don't think either of these prices are that aggressive - pretty sur…

I get my USB-C connectors at around $0.08 at low volumes (LCSC).

Re: News about Raspberry Pi 6 and Microcontroller Development

#84

Post by everforward »

myself248 wrote: post #63
wrxd wrote: post #32

Earlier quoted context omitted.

It's still true that people, out of convenience and familiarity, used Raspberry Pi for tasks where a microcontrollers would have been perfectly adequate

This just clarified something for me. I've always been annoyed when I see a Pi with nothing connected to its GPIO header; why not just use a cheap thin client? Or an old laptop, for that matter? But that's missing the point. Here's the point: Pre-Beagleboard-and-Pi, if you wanted an programmable thing to work with GPIO, you used an Arduino or a BASIC Stamp, or just a plain old PIC. But they wouldn't run a real OS. Pr…

> I've always been annoyed when I see a Pi with nothing connected to its GPIO header; why not just use a cheap thin client?

There have also been times when Pi's were cheap enough and x86 idled so power-inefficiently that you'd save money over a reasonable time horizon if you couldn't run your old laptops at full throttle.

Absurdly extreme example, but at one point I decided to replace a couple (maybe 3) RPi's with a single old Dell rack server off Ebay plus replaced my router with one running pfsense. I knew it would be mostly idle, that thing had 2 Xeon processors to replace 3 cheap ARM processors.

Between the 2 rack servers, my power bill went up by enough to buy a new Pi or two every month. It was like $80/month extra in power bills.

Re: News about Raspberry Pi 6 and Microcontroller Development

#85

Post by armx40 »

porphyra wrote: post #16

The 8GB Pi 5, at $170 [1], is encroaching on Jetson Orin Nano Super's $240 price point [2]. But the Jetson has a faster CPU (newer a78ae cores rather than a76) and, obviously, a whole-ass GPU. [1] https://www.microcenter.com/product/673711/raspberry-pi-5 [2] https://www.microcenter.com/product/691058/nvidia-jetson-ori...

Yup. At this moment in the embedded world Jetson Orin Nano is the best value for money purchase. Absolute beast at the price point.

Re: News about Raspberry Pi 6 and Microcontroller Development

#86

Post by armx40 »

My opinion is that Raspberry Pi has to release an NPU, and start/revolutionise the open source NPU communities and tech. Raspberry Pi's has to find itself useful in vision AI applications (extremely common in industries these days). Without it I think Arduino with its new Qualcomm boards will kill it.

Re: News about Raspberry Pi 6 and Microcontroller Development

#87

Post by ahepp »

hedora wrote: post #68
dirtikiti wrote: post #17

I have bought an rpi at every generation. And I still have yet to find an actual use for them. Everything they do from a compute perspective is just better with a mini pc or old laptop with a mobile spec chip. Everything they do from a programmability perspective is just better with a microcontroller specific to the task. I just don't see the actual market position for these things. They were supposed to be a cheap b…

I think I found a use case, but would love to be proven wrong with some faster / cheaper approach: I've tired of buying S1 compatible sonos speakers on ebay, so I'd like to build a speaker enclosure with a WiFi device that has a high-quality DAC and the ability to use pipewire or similar to do real-time DSP and multi-room audio sync. A RPI + third party hat should work well for this, or so I am told.

This sounds like a great approach to me. I've thought some kind of pi zero 2w based smart speaker system would be an awesome project for a while. I am having a difficult time imagining a cheaper option, especially if you want something like the hat ecosystem.

Re: News about Raspberry Pi 6 and Microcontroller Development

#88

Post by SirHumphrey »

dirtikiti wrote: post #17

I have bought an rpi at every generation. And I still have yet to find an actual use for them. Everything they do from a compute perspective is just better with a mini pc or old laptop with a mobile spec chip. Everything they do from a programmability perspective is just better with a microcontroller specific to the task. I just don't see the actual market position for these things. They were supposed to be a cheap b…

I would tend to agree unless you need those gpio pins. Then there are few other good options.

Re: News about Raspberry Pi 6 and Microcontroller Development

#90

Post by myself248 »

michaelt wrote: post #72
myself248 wrote: post #63

Earlier quoted context omitted.

This just clarified something for me. I've always been annoyed when I see a Pi with nothing connected to its GPIO header; why not just use a cheap thin client? Or an old laptop, for that matter? But that's missing the point. Here's the point: Pre-Beagleboard-and-Pi, if you wanted an programmable thing to work with GPIO, you used an Arduino or a BASIC Stamp, or just a plain old PIC. But they wouldn't run a real OS. Pr…

Then the esp8266 came along, offering wifi and gpios and an arduino-like programming experience at a price point of literally $1

And the ESP32 is offering CPU power on par with many of the embedded-x86 SOCs that powered some of the early wifi routers...
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