The Raspberry Pi 500+ is most of a Raspberry Pi 5 Model B 16GB that’s been squeezed into a keyboard case, with fancy mechanical key switches and some fetching RGB lighting. It’s fair to ask whether this package is worth the $200 asking price, or whether you’d be better off with a regular Pi instead.
The weekend is so close I can almost smell it—and that means it’s time for another roundup of Raspberry Pi projects to try out over the next few days. This weekend, I’m focusing on building out self-hosted media servers and controllers to help simplify audio listening and controlling.
Key takeaways
Pi Network (PI) has been underperforming over the past three days and risks dropping below a critical support trendline. The on-chain data indicates an increase in supply pressure as Centralized Exchanges (CEXs) experience a surge in inflows.
Data obtained from PiScan reveals that user deposits over Pi Network’s Know Your Business (KYB)-verified CEXs totaled 2.75 million PI tokens in the last 24 hours. The deposit is far greater than the withdrawals of 1.76 million tokens. Thus, indicating a daily net inflow of CEXs, suggesting that investors might be selling some of their stash.
The PI/USD 4-hour chart is bearish and efficient as PI has lost 2% of its value in the last 24 hours. The cryptocurrency is retracing toward a local support trendline formed from the October 22 and November 4 lows.
At press time, PI is trading at $0.2267, with a bearish trend currently in play. The technical indicators are bearish, suggesting further downward movement. The RSI of 37 shows that PI is heading into the oversold region if the trend continues. The MACD lines are also within the bearish region.
If the trend persists, PI could decline below the Monday low of $0.2204, with another major support just around the $0.1919 region.
However, if the bulls regain control, PI could reclaim last week’s high at $0.2841. An extended bullish run would allow PI to eye the August 1 low at $0.3220.
However, the current market conditions remain bearish, with PI expected to underperform over the next few days.
The post PI could drop below $0.22 amid a strong bearish trend: Check forecast appeared first on CoinJournal.
I've been using Raspberry Pi devices and similar single-board computers for years. They all have in common their ARM processors, just like most desktop computers are x86-64 processors, but I'm getting an SBC with a RISC-V chip.
Raspberry Pi just announced software updates for its growing suite of AI products. This is coming with full support for the AI HAT+ on the Trixie release of Raspberry Pi OS and a brand new debugging feature for the AI Camera.
The Raspberry Pi 500+ is a ready-to-go single-board computer and keyboard combo, with a 256GB NVMe drive, mechanical keys, and Raspberry Pi OS preloaded. It’s the fastest way to get started with a Raspberry Pi, and it’s a highly capable ARM-based desktop computer replacement that runs Linux.
My Raspberry Pi 500+ has finally been delivered, but I kept the order brief so I could keep the cost down. In spite of my attempts at being frugal, I’d be lying if I said I hadn’t toyed with the idea of throwing a few more items on the order.
Raspberry Pi computers have remained relatively affordable over the years, even if that meant stock was limited at times. Unfortunately, most modern Pi boards are now going up in price due to AI-driven memory manufacturing costs.
Strategy CEO Phong Le has revealed the instance in which his company may be forced to sell its Bitcoin holdings. This comes amid concerns about the MSTR stock crash, which puts the company at risk of seeing its mNAV drop below 1.
During an interview on the ‘What Bitcoin Did’ podcast, the Strategy CEO said they could sell Bitcoin to fund dividend payments on their preferred shares if the mNAV is trading below 1. He alluded to the BTC yield, which is their primary KPI, and that under 1x mNAV, it is more “creative” to sell their BTC holdings to pay the dividends.
The Strategy CEO explained that they typically raise capital when their mNAV is above 1 to fulfill their obligations, even when it is below 1. He alluded to the 2022 crypto winter when they bought back their Bitcoin-backed loans as proof that they had prepared in advance for such market conditions. However, when they are unable to raise capital, Phong Le stated that they will have no option but to sell their BTC holdings.
Strategy data shows that their mNAV is currently at 1.19. Meanwhile, the company currently holds 649,870 BTC, worth around $55 billion. With the MSTR stock on a downtrend, Michael Saylor’s company still faces the risk of seeing its mNAV fall below 1 for a sustained period. TradingView data shows that the stock is now down over 40% year-to-date (YTD) from a 2025 high of around $455.
There were recently rumors that Strategy supposedly sold some of its Bitcoin holdings, which Saylor quickly denied. The company then went on to make one of its largest purchases this year, buying 8,178 for $836 million. This formed part of the proceeds from the company’s STRE offering.
In an X post, Michael Saylor teased another Bitcoin purchase from Strategy. He posted the company’s BTC portfolio tracker with the caption, “What if we start adding green dots?” It is worth noting that these conventional Sunday posts have usually preceded a BTC purchase announcement by the company the following day.
Based on this, Strategy likely bought more Bitcoin between November 24 and 30 last week. This comes amid the Bitcoin downtrend, with the flagship crypto again dropping below the psychological $90,000 level. Besides the BTC crash, the possibility of an exclusion from MSCI indices is another factor that paints a bearish picture for Saylor’s company. The MSCI will decide by January next year whether treasury companies like Strategy should remain in their indices.
At the time of writing, the BTC price is trading at around $86,000, down over 5% in the last 24 hours, according to data from CoinMarketCap.
I use all sorts of software when I travel: a VPN, streaming music apps, cloud storage, and more. I turned my Raspberry Pi into a one-stop-shop travel router that combines all of those uses into one device, so I don't have to worry about them individually on my phone, laptop, or console.
The Raspberry Pi 500+ is the latest iteration of the best-selling single-board computer with 16GB RAM and 256GB of solid-state storage, all wrapped up in a keyboard that’s beautiful to type on, and I love it.
These days, everyone’s got a million different devices that can take a passable photo. That’s not special anymore. A camera that draws what it sees, though? That’s kind of fun. That’s precisely what [Jens] has built—an instant sketch camera!
The sketch camera looks like a miniature drawing easel, holding a rectangular slip of paper not dissimilar in size to the Polaroid film of old. The 3D-printed frame rocks a Raspberry Pi controlling a simple pen plotter, using SG90 servos to position the drawing implement and trace out a drawing. So far, so simple. The real magic is in the image processing, which takes any old photo with the Pi camera and turns it into a sketch in the first place. This is achieved with the OpenCV image processing library, using an edge detection algorithm along with some additional filtering to do the job.
If you’ve ever wanted to take Polaroids that looked like sketches when you’re out on the go, this is a great way to do it. We’ve featured some other great plotter builds before, too, just few that are as compact and portable as this one. Video after the break.
Raspberry Pi OS has a new way to set the Wi-Fi network name and password, SSH access, and other options while you install it. The latest update switched to cloud-init, so setting up a Pi from scratch is more like other Linux systems.
The Sharp PC-G801 was an impressive little pocket computer when it debuted in 1988. However, in the year 2025, a Z80-compatible machine with just 8 kB of RAM is hardly much to get excited about. [shiura] decided to take one of these old machines and upgrade it into something more modern and useful.
The build maintains the best parts of the Sharp design — namely, the case and the keypad. The original circuit board has been entirely ripped out, and a custom PCB was designed to interface with the membrane keypad and host the new internals. [shiura] landed on the Raspberry Pi Zero 2W to run the show. It’s a capable machine that runs Linux rather well and has wireless connectivity out of the box. It’s paired with an ESP32-S3 microcontroller that handles interfacing all the various parts of the original Sharp hardware. It also handles the connection to the 256×64 OLED display. The new setup can run in ESP32-only mode, where it acts as a classic RPN-style calculator. Alternatively, the Pi Zero can be powered up for a full-fat computing experience.
The result of this work is a great little cyberdeck that looks straight out of the 1980s, but with far more capability. We’ve seen a few of these old pocket computers pop up before, too.
Pi Network (PI) is among the altcoins to hold onto gains in the past 24 hours as of writing.
After ranking among top-performing tokens in the top 100 by market cap, PI shed gains to just over 2% over the last 24 hours.
However, PI still trades green alongside Sky and Monero, and at $0.25, hovers at a key level for both bulls and bears.
Notably, Bitcoin’s surge above $90,000 helped flip sentiment. More than that, Pi Network’s recent gaming partnership looks to be a crucial catalyst.
“The partnership between Pi and CiDi Games reinforces Pi’s ongoing initiative toward building out a viable, self-sustaining gaming environment in the Pi ecosystem, and will take these efforts to the next level, scaling game integration, social interactions and innovation across the network,” the team wrote in a blog post.
As cryptocurrencies experienced a slight uptick over the week, one of top top-gaining tokens was PI.
The announcement around PI’s expansion into the burgeoning gaming sector, which came earlier in the week, has buoyed prices.
Mainly, adding to the real-world utility of PI is attracting attention.
On November 26, the token traded around $0.24.
Yet amid the news, prices rose sharply, and buyers hit multi-week highs above $0.28.
With bulls managing to retest highs of $0.28, the highest level in over a month, the $0.30 supply zone came into view.
Above this lies the all-important April-May 2025 floor around $0.50-$0.58.
The latest uptick for PI price is therefore key to momentum, particularly as sellers have pushed prices back to the $0.25 support area.
On the technical front, bulls have retreated from the resistance line of an ascending triangle on the daily chart.
The immediate hurdle lies in the $0.27-$0.28 range, and a flip from this mark has bulls currently battling to keep the $0.25 level.
Indicators such as the Relative Strength Index (RSI) and Moving Average Convergence Divergence indicator paint a mixed outlook.
The RSI on the daily chart is downsloping after bouncing off the overbought level at 70, with overbought conditions having helped buyers push lower.
RSI is currently around 60, but a bullish divergence favours bulls.
If RSI holds 60, an upsloping trajectory could see PI price recover to $0.28 and allow for a potential breakout beyond $0.50.
This outlook will strengthen if MACD maintains the positive structure that has a histogram in green.
On the downside, a breakdown to $0.20 risks sending bulls to October 2025 lows of $0.15.
The post Pi Network price retests $0.25 amid major gaming deal appeared first on CoinJournal.
If you want to protect a system from being hacked, a great way to do that is with an airgap. This term specifically refers to keeping a system off any sort of network or external connection — there is literally air in between it and other systems. Of course, this can be limiting if you want to monitor or export logs from such systems. [Nelop Systems] decided to whip up a simple workaround for this issue, creating a bespoke one-way data extraction method.
The concept is demonstrated with a pair of Raspberry Pi computers. One is hooked up to critical industrial control systems, and is airgapped to protect it against outside intruders. It’s fitted with an optocoupler, with a UART hooked up to the LED side of the device. The other side of the optocoupler is hooked up to another Raspberry Pi, which is itself on a network and handles monitoring and logging duties.
This method creates a reliable one-way transmission method from the airgapped machine to the outside world, without allowing data to flow in the other direction. Indeed, there is no direct electrical connection at all, since the data is passing through the optocoupler, which provides isolation between the two computers. Security aficionados will argue that the machine is no longer really airgapped because there is some connection between it and the outside world. Regardless, it would be hard to gain any sort of access through the one-way optocoupler connection. If you can conceive of a way that would work, drop it down in the comments.
Optocouplers are very useful things; we’ve seen them used and abused for all sorts of different applications. If you’ve found some nifty use for these simple parts, be sure to drop us a line!
When AI is being touted as the latest tool to replace writers, filmmakers, and other creative talent it can be a bit depressing staring down the barrel of a future dystopia — especially since most LLMs just parrot their training data and aren’t actually creative. But AI can have some legitimate strengths when it’s taken under wing as an assistant rather than an outright replacement.
For example [Aarav] is happy as a lark when birdwatching, but the birds aren’t always around and it can sometimes be a bit of a wild goose chase waiting hours for them to show up. To help him with that he built this machine learning tool to help alert him to the presence of birds.
The small device is based on a Raspberry Pi 5 with an AI hat nested on top, and uses a wide-angle camera to keep an eagle-eyed lookout of a space like a garden or forest. It runs a few scripts in Python leveraging the OpenCV library, which is a widely available machine learning tool that allows users to easily interact with image recognition. When perched to view an outdoor area, it sends out an email notification to the user’s phone when it detects bird activity so that they can join the action swiftly if they happen to be doing other things at the time. The system also logs hourly bird-counts and creates a daily graph, helping users identify peak bird-watching times.
Right now the system can only detect the presence of birds in general, but he hopes to build future versions that can identify birds with more specificity, perhaps down to the species. Identifying birds by vision is certainly one viable way of going about this process, but one of our other favorite bird-watching tools was demonstrated by [Benn Jordan] which uses similar hardware but listens for bird calls rather than looking for the birds with a vision-based system.
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