81–90 of 154 posts
They might be good performance wise, but if you watch the Jeff Geerling video he mentions in the post, it will show you how much trouble he has with it. Custom distros with broken repos, non mainlined outdated kernels.
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If you are hobbling with a PI it's all about the community support, form factor, low power and the header pins. Hopefully if you are buying a Pi you already have a specific project in mind. For example: I use a few zero 2 w's with shairport-sync to make Airplay stereos. I use the header pins to control a relay to turn on and off an audio amp. Pi 4+ would actually work a lot better for this especially when playing aud…
I wouldn't go too far down the "community support" thing with the RPi foundation. Careful if you say anything negative, even in a constructive tone, in case Liz shuts your threads down. I had some problems with brownouts on the RPi 2 and posted a technical thread. It was deleted and my account terminated. There are various reports of this from community refugees who switched to other platforms.
Geez for the prices listed in the article (153 EUR and 301 EUR), get a TMM (tiny mini micro - https://www.servethehome.com/introducing-project-tinyminimic... ) computer. These are the SFF/USFF off-lease older enterprise computers like Dell Optiplex. Note that ServeTheHome.com does power consumption for every model it reviews. These ~1L sized computers idle in the 7-13W range. Even with EU electricity prices, it would…
I love the silence, and run proxmox with enough memory and storage.
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This sort of underscores the weakness of RPi as a complete computer: A complete computer is at least somewhat hardened against ESD and what not, has onboard storage of some description, and isn't severely throttled from a power standpoint. I like RPis and similar for rapid prototyping if I know I need GPIO control, but if you don't, there are better machines out there, at similar price points.
If you need GPIO you might be able to use a uc like an rp2040 or esp32 and connect that to your dell machine. The uc run as cheap as $5 for something that is 32bits with wifi.
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This sort of underscores the weakness of RPi as a complete computer: A complete computer is at least somewhat hardened against ESD and what not, has onboard storage of some description, and isn't severely throttled from a power standpoint. I like RPis and similar for rapid prototyping if I know I need GPIO control, but if you don't, there are better machines out there, at similar price points.
If you need GPIO you might be able to use a uc like an rp2040 or esp32 and connect that to your dell machine. The uc run as cheap as $5 for something that is 32bits with wifi.
[0] https://pine64.com/product/pineseed-bl602-wifi-ble5-soc/
They're all shit. Get a Lenovo mini PC off eBay and stick Debian on it. I replaced my shitty Pi with a Lenovo M600. If you want a dependable computer, stay away from pseudo-embedded hardware.
I like this idea, but what do you do for GPIO (and SPI, I2C etc.)?
Found this:
"Ryanteck RTk.GPIO (PC GPIO Interface)" https://uk.pi-supply.com/products/ryanteck-rtk-gpio-pc-gpio-...
gpiozero > Remote GPIO: https://gpiozero.readthedocs.io/en/stable/remote_gpio.html :
> GPIO Zero supports a number of different pin implementations (low-level pin libraries which deal with the GPIO pins directly). By default, the RPi.GPIO library is used (assuming it is installed on your system), but you can optionally specify one to use. For more information, see the API - Pins documentation page.
> One of the pin libraries supported, pigpio, provides the ability to control GPIO pins remotely over the network, which means you can use GPIO Zero to control devices connected to a Raspberry Pi on the network. You can do this from another Raspberry Pi, or even from a PC.
Presumably, e.g. TLS to secure that control channel is your responsibility.
Parallel ports > Pinouts: https://en.wikipedia.org/wiki/Parallel_port#Pinouts
"The parallel port" (2023) https://news.ycombinator.com/item?id=34585216
Serial port: https://en.wikipedia.org/wiki/Serial_port
UART: Universal asynchronous receiver-transmitter:
Serial TTL: https://en.wikipedia.org/wiki/Transistor%E2%80%93transistor_... :
> TTL serial refers to single-ended serial communication using raw transistor voltage levels: "low" for 0 and "high" for 1. [31] UART over TTL serial is a common debug interface for embedded devices.
"Possible to use a 9 Pin Serial port as "GPIO" using ioctl()?" https://stackoverflow.com/questions/27789099/possible-to-use...
D-subminiature > Typical applications > Communications ports: https://en.wikipedia.org/wiki/D-subminiature#Communications_...
Crosstalk: https://en.wikipedia.org/wiki/Crosstalk
"Can you hotwire this computer to transmit a tone through the radio?" https://www.getyarn.io/yarn-clip/aac07d77-c6d6-4da7-bdd3-b93... https://en.wikipedia.org/wiki/Air-gap_malware
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No they don't. It is a barrel jack you can obtain an adapter for elsewhere, but your adapter is going to be missing the third pin. This type of system uses the 3rd line to communicate with the power supply and during startup the computer asks it how much power it is capable of supplying. If the power supply doesn't answer, it drastically throttles your CPU. Sure, you can boot the system, though it would be throwing a…
Lenovo uses a resistor to check the PSU power, should be easy enough. Don't know what Dell is doing.
https://hclxing.wordpress.com/2014/02/09/hacking-a-dell-powe...
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FWIW once I started deploying my Pis with automotive-grade SD cards bought from Arrow and Canakit 5.1v PSUs, all the stability & integrity issues completely disappeared. Costs a bit more, bringing the price of a setup closer to a used SFF HP or whatever, but it’s super stable. Whether we should feel bound to go to such lengths is another topic…
Yeah, that's what kills me with rpis. Yes they're cheap... until you add a chassis, a safe SD card, a 1st party power supply that won't give you the dreaded voltage warning icon, etc. I don't regret owning some since they basically taught me to do Linux adminning, but the shopping experience is a bit like buying an airline ticket.
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If you need GPIO you might be able to use a uc like an rp2040 or esp32 and connect that to your dell machine. The uc run as cheap as $5 for something that is 32bits with wifi.
Or less that $1 for a SoC powered by 32-bit RV32IMAFC RISC-V “SiFive E24 Core”.[0] [0] https://pine64.com/product/pineseed-bl602-wifi-ble5-soc/
Geez for the prices listed in the article (153 EUR and 301 EUR), get a TMM (tiny mini micro - https://www.servethehome.com/introducing-project-tinyminimic... ) computer. These are the SFF/USFF off-lease older enterprise computers like Dell Optiplex. Note that ServeTheHome.com does power consumption for every model it reviews. These ~1L sized computers idle in the 7-13W range. Even with EU electricity prices, it would…