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Raspberry Pi Zero 2 W

raspberrypi.com

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Re: Raspberry Pi Zero 2 W

#11

Post by jessfyi »

avhon1 wrote: post #10
jcun4128 wrote: post #9

side rant: it's annoying how you can't buy these things by themselves, usually bundled with crap I do want this, I think it's taken for granted how easy this thing can connect to a camera. I bought a Teensy/blue/BeagleBone/etc.. thinking "Oh I'll just plug in a camera into it". For the Teensy it won't but maybe the Beagle bone. I was using a single core Pi Zero so it was noticeable doing things like iterating over fr…

It seems pretty easy to order just the Pi? I opened the US suppliers, and of the ones that aren't already out of stock, you can: buy directly from Makerbright: https://makerbright.com/raspberry-pi-zero-2-w-.html or place an order, which will ship in early November, from: * Sparkfun https://www.sparkfun.com/products/18713 * PiShop https://www.pishop.us/product/raspberry-pi-zero-w-2/ * CanaKit https://www.canakit.com/r…

Ah thanks! I also just realized other vendors would likely ship later. Wish they mentioned them in the official blogpost as well.

Re: Raspberry Pi Zero 2 W

#12

Post by jcun4128 »

avhon1 wrote: post #10
jcun4128 wrote: post #9

side rant: it's annoying how you can't buy these things by themselves, usually bundled with crap I do want this, I think it's taken for granted how easy this thing can connect to a camera. I bought a Teensy/blue/BeagleBone/etc.. thinking "Oh I'll just plug in a camera into it". For the Teensy it won't but maybe the Beagle bone. I was using a single core Pi Zero so it was noticeable doing things like iterating over fr…

It seems pretty easy to order just the Pi? I opened the US suppliers, and of the ones that aren't already out of stock, you can: buy directly from Makerbright: https://makerbright.com/raspberry-pi-zero-2-w-.html or place an order, which will ship in early November, from: * Sparkfun https://www.sparkfun.com/products/18713 * PiShop https://www.pishop.us/product/raspberry-pi-zero-w-2/ * CanaKit https://www.canakit.com/r…

Thanks for that, yeah I saw the two on the rpi site suggested were already out of stock. I do normally buy from Amazon/locker but I just grabbed one from MakerBright.

Part of me feels bad whenever I use these so much computing wasted, like I have one taking a picture of an indoor garden/turning a light on/off with a cron job/Apache server and that's it. Oh well, good time for tech anyway.

Re: Raspberry Pi Zero 2 W

#13

Post by xgbi »

geerlingguy wrote: post #2

I've been testing one for a couple weeks, and a quick rundown on it: it has a quad-core A53, same CPU/SoC core as the Pi 3, with 512 MB of RAM. This means it can run 64-bit Pi OS, but it is memory-limited and even some of the benchmarks I ran needed extra swap space to complete. But for anything that does run in the 512 MB of LPDDR2 RAM, it is at least twice as fast as the Zero/Zero W, and sometimes 3-8x faster, depe…

Do you have power consumption numbers? Compared to the Pi Zero W, hom much more does it consumes?

Re: Raspberry Pi Zero 2 W

#15

Post by zxcvgm »

rektide wrote: post #4

Original RPi0 supposedly can idle at 0.4W, where-as the 3 (whose cpu this is based on) idles at >1.5W. It's cool to have this great small package, but this is a very different offering than the first RPi0W. It's felt really weird seeing so little progress in available low power ARM over the years. Atmel/Microships SAMA5D3 / SAMA5D2 with it's 600 MHz Cortex A5 (2009) still seems like- half a decade latter- one of a ra…

The processors on the Pis aren't really optimized for low power, and they aren't strictly ARM. These Broadcom chips have a VideoCore that starts up first, which then brings up the ARM cores (geerling goes into greater detail here [0]). I don't think there was any kind of work done to properly suspend both cores for sleep modes.

If you're looking for low power ARMs, maybe other boards may fit the bill better.

[0] https://www.youtube.com/watch?v=DHwL1_afSn8

Re: Raspberry Pi Zero 2 W

#17

Post by mikkelam »

Super exciting! We use the previous gen at my company to run octoprint software for our 3d printer farm and they do tend to run quite slow. This should be a nice needed upgrade.

In general the RPI Zero series is really great value for a tiny linux machine.

Re: Raspberry Pi Zero 2 W

#19

Post by alexellisuk »

I've been running one of these for a few months too and was excited when I saw an ARMv7 CPU. In the open source and container world, many projects have stopped supporting the Zero and RPi1 due to its lack of RAM and slow CPU speed. Even running "go build" can take multiple seconds on a simple program. Starting Node.js was also fairly slow.

The RPi zero shines for Python scripts that access hardware - for sensors and camera projects that are low power and cheap to make. It was actually perfect for the GrowLab project that we did over the summer with 20 others from the community https://growlab.dev - sensor data and camera images were aggregated to a more powerful RPi3/4 and then either uploaded to a static GitHub Pages site, fed into InfluxDB to create beautiful charts with Grafana.

The new Zero 2 means that I can start to run ARMv7 or even ARM64 containers on the zero again, but with the limit of 512GB of RAM. The launch blog post explains why this couldn't be made higher.

The first thing I tried out was not K3s, which I knew already suffers on a Raspberry Pi 3, but faasd. Faasd is OpenFaaS but built for pure containerd, no multi-node networking and no Kubernetes. It works fairly well for a few functions, even with NATS and Prometheus being deployed as part of the stack.

So whilst you're not going to be building K3s clusters with these, they can run containers - with Docker, containerd, nerdctl and even as a full application stack with faasd.

Where this gets more interesting for me, is hosting small applications, integrations or APIs. Perhaps with Ingress via a tunnel that can penetrate NAT/firewalls like Inlets, Argo or Ngrok.

I've ordered one of the release models to see how it performs. Look out for a blog post from me soon.

Re: Raspberry Pi Zero 2 W

#20

Post by geerlingguy »

xgbi wrote: post #13
geerlingguy wrote: post #2

I've been testing one for a couple weeks, and a quick rundown on it: it has a quad-core A53, same CPU/SoC core as the Pi 3, with 512 MB of RAM. This means it can run 64-bit Pi OS, but it is memory-limited and even some of the benchmarks I ran needed extra swap space to complete. But for anything that does run in the 512 MB of LPDDR2 RAM, it is at least twice as fast as the Zero/Zero W, and sometimes 3-8x faster, depe…

Do you have power consumption numbers? Compared to the Pi Zero W, hom much more does it consumes?

Yes; check my blog post [1] or latest YouTube video [2] for details, but the tldr is 0.4W (80 mA) idle minimum for Zero W, 0.6W (100 mA) idle minimum for Zero W 2.

Zero W goes up to 160 mA at load, while Zero W 2 gets up to 400-500 mA due to the three extra CPU cores.

[1] https://www.jeffgeerling.com/blog/2021/look-inside-raspberry...

[2] https://www.youtube.com/watch?v=lKS2ElWQizA

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