Linux

l a p p i e s

Low power and arm architecture are big differentiators between Pi and laptops.

I totally agree recycle laptops where possible, but they're generally noisier and less energy efficient plus the battery degrades over time and is a fire risk.

They're not necessairly a good fit for always-on server or service type uses comparef to a small board like Raspberry Pi. But a cheap or free second hand laptop is definitely good for tweaking, testing and trying our projects.

It's low power that is still making arm small computers popular. It's impossible to get a pc down into the 2-5 Watt power consumption range and over time it's the electrical costs that add up. I would suggest the RPI5 is the thing to get because it's expensive for what it is and more performance is available from other options supported by armbian.

The power constraints are more important to most than the size constraints honestly.

You lose the I/O and power efficiency is no comparison. You can get better power efficiency and sometimes some I/O with an old router and OpenWRT, but you'll be in the class of a Beagle Bone and a much harder learning curve. I've never managed to get a sensor or peripheral working on some old laptop's SPI or I2C buses like how easy it is on a Rπ.

raspberries were viable while those were cheap. I think I got a 3b (plus?) in pre-deficit years for like $25 second-hand AND I got some shitty case AND a microSD card AND it could run off of a somewhat normal USB phone charger. so using those instead of a 10 year old decommissioned desktop was an awesome value proposition.

nowadays, those devices are encroaching on trip-digits territory and the power adapter is like $30. the computing power you can buy for a third of that designates raspberries exclusively for niche use cases where footprint and power consumption are primary considerations.

not to mention fake Jason Statham just rubs me the wrong way, like all them "visionaries". he makes this sound like he's the head of Feed Africa or something, on a noble mission to save humanity and whatnot.

I dislike posts like this. Technology moves quickly. PIs are great for hobby electronics where you need a little computer. Want a cheap computer to run a few things 24/7 and know what you're doing? Pi it is. You don't need to run containers on a pi because you have the skills to install the dependencies manually. They cost pennies to run 24/7.

I think of pis as beefed-up calculators. I have made lots of money using a pi zero running code I needed to run 24/7. Code I developed myself.

Having an old laptop with outdated parts taking up lots of space, weighing a lot, and having components like fans, keyboard, and mousepad most-likely soon dying and needing replacing is an additional concern you don't want.

Someone below saying use an old laptop if you're living with parents and don't pay the electricity bill is a bit lame. Do your part for the world. Someone will be paying for it.

Ultimately, use what you want but if you're just starting with servers, use a virtual machine on your computer and log in to it. You can dick about with it as much as you want, and reset back to a working state in seconds.

Rockchip boards are way more efficient than Pis

There are also a lot of mini PCs that are comparable in price to a Raspberry Pi 5 once you factor in the cost of a case, SD card, and power supply for the Pi.

I have an old pentium laptop N3520 with 4GB DDR3. I removed everything and put it in a receiver box 1U size. It consumes so little energy that it can run 5-7 hours from its battery (I call it build in USV). Last time I measured 3-7w. Also passiv cooled , no noise. Another machine I use , is with a i7 4770 with 16GB for Proxmox, 7-20w , peak is much higher but rarely used , only on boot and vm startup.

I now have a stack of Thinkpads laying around. Right next to my two RPis 😂

Add use of gpio to reasons to use pie.

While gpio adaptors are available for pc. The software architecture is not as well rounded and documented.

So for any complex hardware project development. Gpio based SBCs are often essential.

So space, low power and gpio development.

Otherwise yep old laptop or even desktop can be cheaper and more able.

But overall. The wide software support and documentation for hardware connectivity is a bloody good reason to keep pie supported.

I'm setting 2 up to control the hot water and solar dump system on my shared little boat. As I want to link 12v Lifepo4 batt charging with the solar dump and visually impaired control for AC and diesel heating of the water.

Pies really are the best option to play with. While low power and easy to design a unique low vision interface.

Also UK boat safty. Is issuing warning about permanently connected li ion batts on boats. So it is likely setting up a laptop to manage this while not on the boat. Will be banned in the near future.

Only an issue for UK boating but worth considering the risks of leaving laptops to run when not observed.

Better than an old laptop, get a mini-pc like thinkcentre tiny. They're more upgradeable, space-efficient, power efficient, have better cooling

I wish there was a convenient place to get these