Pi Zeroes always looked like a scam from Canada, as the approved resellers limit you to 1 unit and shipping was more expensive than the unit. Now at 15USD, it's the first time shipping is cheaper than the unit, but I can't get it below 35CAD (28USD) shipped to Toronto.
Raspberry Pi Zero 2 W
61–70 of 95 posts
Re: Raspberry Pi Zero 2 W
#62I ordered one, then quickly cancelled because of the lack of pre-soldered header. Looking for a drop-in replacement for my Pi Zero WH due to time constraints (new baby).
I presume they didn't make the pre-soldered header available at launch due to high demand and the ongoing chip shortage. Much easier to produce one less complex package.
Despite having just 512MB RAM, I think it's perfect for the its common use cases. For me, the CPU increase will be helpful for getting it set up and installing software (especially if it needs to be compiled), not so much for when it's actually being used.
Re: Raspberry Pi Zero 2 W
#63Original 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…
i.mx8 Nano supposedly can idle at As for the relative unpopularity of Cortex A3x series, I suspect that might partly because Cortex M series has been creeping into similar performance territory, like for example the i.mx rt mcu on Teensy 4.x, which has Cortex M7 running at 600 MHz.
Re: Raspberry Pi Zero 2 W
#64How long before cutting edge hardware trickles down to stuff like the Pi Zero? I think a usb-c port would be more useful for these small form-factors, but it's probably a long way of considering there's only usb 2.0.
Re: Raspberry Pi Zero 2 W
#65Original 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…
"Low power" and "something that runs an OS as heavy as Linux" are two conflicting features.
Re: Raspberry Pi Zero 2 W
#66> a micro USB port, and a micro USB power port
That's pretty sad.
Re: Raspberry Pi Zero 2 W
#67Random thought upon reading the linked announcement: If you stacked multiple Pi boards on top of each other, connected through the GPIO HAT connector, could you network them? Apologies, just woke up and coffee not kicked in. This is probably silly :) EDIT: yes, I should search for this sort of thing before posting: https://forums.raspberrypi.com/viewtopic.php?t=127660 tl;dr "serial port, RS485 + SLIP of some sort, pr…
RS485 is just an electrical standard for serial transmission that includes multiple devices on the same bus. It is not a network or transport protocol. I doubt SLIP would function on an RS485 connection as 485 is typically used in master-slave configurations where only one master unit sends messages and listening "slave" devices only respond if addressed. You'd have to write a protocol layer to handle the transport o…
If the RPi SoC supported being an SPI slave (it doesn't) you could do something similar to a token ring network at up to - theoretically - something like 100 mbit/s.
Re: Raspberry Pi Zero 2 W
#68> a micro USB port, and a micro USB power port That's pretty sad.
I can think of a half dozen reasons to justify going with micro B but I feel the same.
Re: Raspberry Pi Zero 2 W
#69Earlier quoted context omitted.
64bit is great news (if only because I can target it with the same binaries), but only 512MB of RAM and no EMMC is disappointing, regardless of power budget constraints. I have been using 3As because of the reduced size (and the full sized HDMI port, which comes in handy), so I hope those get updated to a 4-grade chipset —- I feel that there is a gap between the Compute Module and the A that needs filling.
next we need a RPi4A with 2GB of ram, the full size HDMI, usb C and updated silicon
At some point we have to ask what the raspberry pi platform is for - they used to be low budget, low cost, low power general purpose computing in an extremely small formfactor.
It seems like there's still one product, but increasing divergent use cases for that product.
Re: Raspberry Pi Zero 2 W
#70Random thought upon reading the linked announcement: If you stacked multiple Pi boards on top of each other, connected through the GPIO HAT connector, could you network them? Apologies, just woke up and coffee not kicked in. This is probably silly :) EDIT: yes, I should search for this sort of thing before posting: https://forums.raspberrypi.com/viewtopic.php?t=127660 tl;dr "serial port, RS485 + SLIP of some sort, pr…
RS485 is just an electrical standard for serial transmission that includes multiple devices on the same bus. It is not a network or transport protocol. I doubt SLIP would function on an RS485 connection as 485 is typically used in master-slave configurations where only one master unit sends messages and listening "slave" devices only respond if addressed. You'd have to write a protocol layer to handle the transport o…
or just use the standard rs485 protocol that all industrial hardware has used for decades and has preexisting nice libraries - modbus. Built in CRC, dirt simple, reliable.