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Raspberry Pi (no longer the value proposition)
Though I have several?RasPi models in my possession, I find the current generation of RasPi to be overprescribed and definitely overpriced regarding their capabilities. If any of you have not noticed, there is a glut of ChromeBook laptops on the?market since about August 2022. Most of these machines are very power efficient, compared with business?laptops, yet can give any Raspberry Pi a run for the money, particularly when considering the integrated keyboard, display and internal battery. Most CBs are deliberately run at lower?clock?rates, in order to save power; however, with their dual-core and 4GB RAM they are fast enough to replace any of the current generation RPi's. I was able to purchase two new chromebooks, both for around?$100. My ASUS CB cost $129 and has full 1920x1080 screen resolution and four USB3 ports (two types "C"). My ACER CB cost $89 and it has a 1366x768 screen resolution and four USB3 ports (two type "C"). Both CBs came installed with native ChromOS; however, it was easy to install the Linux subsystem?(not an emulator) and run Linux native apps on both of these CBs. All things considered, why are we still stuck with the expensive RPi to be the core of any new design? ================= New subject -- operating Dell laptops from a 12VDC PS I am using an automotive "cigarette lighter" adapter like the one shown in the picture below to power my old Dell 63xx laptop.The adapter converts 12V (nominal) automotive power to the Dell old charging standard voltage of 19V at up to 4.62 A. For those of you who (like me) hate to discard your older laptops, this adapter may save you from building your own boost converter. If I remember right, I paid about $12 for this Dell automotive charger. 73's --Ron? ?N7FTZ |
When I don¡¯t want to deal with chrome or or winders and amd/ intel chromebook does not cut it.? Do does chrome book run linux cleanly that is with good video and sound?
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I run full MATE Fedora 37 on a $55.00 used chromebook. Ron
On Wednesday, November 2, 2022 at 08:32:24 PM EDT, ajparent1/kb1gmx <kb1gmx@...> wrote:
When I don¡¯t want to deal with chrome or or winders and amd/ intel chromebook does not cut it.? Do does chrome book run linux cleanly that is with good video and sound?
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Got me there!? Glad I got several RPI's before the shortage. Ron
On Wednesday, November 2, 2022 at 08:45:32 PM EDT, ajparent1/kb1gmx <kb1gmx@...> wrote:
Now put a 5 band 10w?multi mode transceiver in it. without it looking like it has a bag on the side. |
Allison, I use an Acer Chrombook 15 from a couple of years ago running the latest Linux Mint Cinnamon. It's common for sound not working unless you use a USB dongle. Storage is a problem unless you use a USB device. Mine boots off of a Samsung 512GB FIT USB flash drive. It's got a? nice 1920x1080 touch screen and backlight keyboard but I think it's to much work for most people to open up and set it up for developer mode. If it doesn't boot up from USB then what? On Wed, Nov 2, 2022 at 7:38 PM W2CTX via <w2ctx=[email protected]> wrote:
-- Jerry, AC9NM ÊÖÖеÄÄñÔÚ¹àľ´ÔÖÐÖµÁ½¸ö --
Jerry Ponko, AC9NM |
For those of you who may be ignorant about?CromeOS and Chrome Books, in general:
73's --Ron? ?N7FTZ |
I have 4intel/ amd laptops: dell is faster abd 64bit the key thing its a laptop not an embedable core
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To get to a point. ? if you need a laptop that may be a lo coat path.? if you need an embedable controller with compute power you don¡¯t want a laptop.? that is why itx, Rpi, beagle board, tinkerboard, and an amazingly long list of others.? |
I'm writing this on a Chromebook, love it.
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Zero interest in Windows 11, thus far the Google big brother has been more benign than the Microsoft big brother. Have turned on their linux-in-a-sandbox, which is also awesome if you want something other than ChromeOS apps, it can talk to USB UART Dongles (such as loading firmware to a Nano).. Erasing ChromeOS and installing some other linux distribution would open it up to more USB devices, though I seldom have need for that and ChromeOS is convenient for what I do on it. However, as Allison pointed out, the RPi has all those GPIO pins, and using them is well documented. That's the primary reason to go with an RPi. Well that, and the RPi-Zero is a whole lot smaller and lower power than my Chromebook. Though I don't plan to be buying any RPi's till they get back down around $50. Jerry, KE7ER On Wed, Nov 2, 2022 at 05:32 PM, ajparent1/kb1gmx wrote:
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Ron, What is important can you put a chromebook inside a radio? if your looking for a controller that is embeddable its not a good form factor. |
If you have a Dell laptop, be sure any power supply for it is designed to work with a Dell and is of appropriate wattage.
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The supply has an extra wire, the laptop and supply talk it over before they decide to let the batteries charge. Most other brands of laptop are just power and ground. This is described as a "Dell automotive charger", so would probably work fine with a Dell laptop On Wed, Nov 2, 2022 at 05:08 PM, Dr. Flywheel wrote:
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A few chromebooks have an honest to gosh HDMI port.
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Modern chromebooks have USB-C ports which are fast enough to support a USB-to-HDMI dongle ?? Those work fine under ChromeOS on my $200 Asus 15" Chromebook at 1080p (1920x1080 60hz non-interlaced) Don't know how well they work on a Chromebook that has had ChromeOS replaced with some standard Linux distro. Jerry On Wed, Nov 2, 2022 at 05:32 PM, ajparent1/kb1gmx wrote:
Besides a few usb is there hdmi or access to other io.? |
Chromebooks can be really cheap, down under $100.
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An excellent choice to have stolen at the local coffee shop, or for dropping to the floor while falling asleep. Most of what I create comes down to text editing (preferably in vi), which needs about 0.1% of the power available in a chromebook. At my workdesk, I have an RPi4b. And several elderly x86 machines which I mostly run under Ubuntu linux. A couple of them can also boot to WinXP or Win7. When I do that?they aren't allowed out on the net. Have a full backup of the drives. Occasionally there's some windows only app I want to try.? If it doesn't immediately work I give up. Have zero interest in debugging things windows. Jerry, KE7ER On Thu, Nov 3, 2022 at 09:40 AM, ajparent1/kb1gmx wrote:
As is any laptop may require proprietary drivers not supported yet by linux. ? So its not only chrome books. |
I flipped winders when they dumped NT4, went Ubuntu never looked back.
I generally hate winders. Generally very little here runs winders.? The exceptions had a purpose? Like the P1 with ISA16? so I could run a GPIB card. Or the 486SX/66 that I used for NT4 testing around time of Y2K. There's a second drive in that with Slackware 1.4 still running its big feature is like the P1 box ISA16 and some exotic cards including a dual 6502 apple-II machine. A IBM R40 (PII 1.6ghz) is 32bit so its stuck in the past with Ubuntu but it also carries my build envronment for AD Blackfin and it did large compiles faster than a cup of coffee. Machines I use are generally small physically, low power, typical is 1.6ghz dual or quad core 64bit so I can run up to date browsers and? Mint or Ubuntu.? So far the Rpi-3B+ was more than enough power to run 4NEC2 in a windows emulator.? The Pi4 is much faster for the optimiser task? about 4x faster. Over all if it runs a current browser its fast enough, favorits is Chromium. The Dell 5440 is a exception case (still Ubuntu) as its an I5-2.4ghz machine with lots of ram.? WHy do I have it retirement, aka it was free. I run still like Elsie, LTspice, 4NEC2, Hobbies, as some of the emulations needs some ram and cpu.? ?Its actually remarkable how little CPU is often needed but ram usually pays for itself. As to Vi, for that I have to boot the pdp/11-73 off the Unix V6 pack. Or the MicroVAX2000 running Ultrix V4.2, (Ultrix is DEC BSD UNIX variant). Then again I also have Z80 running VTEDIT a sorta teco/Vteco editor that's very fast.? That's up and running before the rest start thinking about it. It takes very little to do decent text work, though? a large (space) hard disk on the system doesn't hurt.? That and its been up to the task for the last 40 years. Allison ------------------ Please use the forum, offline and private will go to bit bucket. |
From people's responses to my last post, I can see that there is confusion about running the Linux subsystem on a ChromeBook. Perhaps item #3 on my list covering?the subject matter should be elaborated on:
As usual, to each his/her own. For those of you who need I/O pins access, any arduino "nano" low cost USB to I/O can be a solution for interfacing to external?hardware. This is assuming that your I/O requirements are limited in clock speed. I prefer an RP2040 module for external I/O, mostly due to its built-in eight "bit-banger" programmable state machines. Regardless, for such applications, particularly for low-latency real-time applications, the standard Linux kernel and particularly the RPi standard Linux kernel is completely inappropriate, due to multiprocessor interrupt arbitration issues. These limitations can be resolved by replacing Linux with a real-time OS such as FreeRTOS; however, this would not be what most of you are using... At the moment, the best candidate for best bang-for-the buck for bit-banging FP calculations and wireless connectivity, seems to be the ESP32, which has tremendous I/O capabilities, at a very low cost, in addition to running FreeRTOS natively. RPI is no longer the value proposition that it was when it was sold for $35/piece 73's --Ron? ?N7FTZ |
Who cares, if you can not embed it, it is useless.? if you are building
self contained radio, a laptop on the side is not an advance. The RP2040 is not a solution if it doesn't have what you need. One is code security. STM32F4xx is way ahead for that. Allison ------------------ Please use the forum, offline and private will go to bit bucket. |