❌

Normal view

There are new articles available, click to refresh the page.
Before yesterdayMain stream

A Deep Dive into Using PIO and DMA on the RP2350

✇Hackaday
By: John Elliot V
30 November 2025 at 22:00
[Piers] explains his code

Here’s a fun rabbit hole to run down if you don’t already have the RP2040/RP2350 PIO feather in your cap: how to serve data without CPU intervention using PIO and DMA on the RP2350.

If you don’t know much about the RP2040 or RP2350 here’s the basic run down: the original Raspberry Pi Pico was released in 2021 with the RP2040 at its heart, with the RP2350 making its debut in 2024 with the Pico 2. Both microcontrollers include a feature known as Programmed I/O (PIO), which lets you configure tiny state machines and other facilities (shift registers, scratch registers, FIFO buffers, etc) to process simple I/O logic, freeing up the CPU to do other tasks.

The bottom line is that you can write very simple programs to do very fast and efficient I/O and these programs can run separately to the other code running on your micro. In the video below, [piers] explains how it works and how he’s used it in his One ROM project.

This is the latest installment from [piers rocks] whose One ROM project we’ve been tracking since July this year when we first heard about it. Since then we’ve been watching this project grow up and we were there when it was only implemented on the STM32F4, when it was renamed to One ROM, and when it got its USB stack. Along the way [piers rocks] was on FLOSS Weekly Episode 850: One ROM To Rule Them All too.

Have you seen PIO being put to good use in other projects? Let us know in the comments, or on the tips line!

Bitcoin Mining Blaze: Fire Strikes Greenidge Site Running NYDIG Hardware

✇Bitcoinist
By: Christian Encila
29 November 2025 at 22:00

Fire knocked out power and halted bitcoin mining at Greenidge’s Dresden, New York site after an electrical failure sparked a blaze last week.

According to reports, the incident forced the plant to shut down its generation and data center operations, temporarily stopping both company-run rigs and machines operating for clients.

Electrical Switchgear Failure Reported

Based on reports, an electrical switchgear malfunction on November 23, 2025 started the fire and triggered automatic safety systems that de-energized the facility.

The Dresden plant, which has about 106 megawatts of generation capacity, was taken offline immediately to prevent further damage.

Company filings and local updates said none of the hosted mining machines — including those co-located for NYDIG — suffered material damage during the event.

⚠ A fire just halted operations at Greenidge Generation’s #Bitcoin mining site — a major facility co-hosting rigs for NYDIG. No hardware lost, but the incident reveals a hidden risk: physical infrastructure fragility in the mining stack. #BTC #MiningOps #CryptoInfra #NYBitcoin pic.twitter.com/35sMu2x3le

— ₿itBlitz (@BitBlitz) November 28, 2025

Emergency crews responded and the fire was contained, but the outage left the site idle while technicians inspected equipment and repaired infrastructure.

Impact On Mining Operations And Clients

Reports have disclosed that the shutdown means lost hashing time for every miner at the site. For co-hosting customers like NYDIG, downtime translates to missed block rewards until the machines can be safely powered up again.

Mining firms typically earn revenue only while rigs run, so even a short stoppage can cut into weekly receipts. Industry observers noted that the Dresden plant is a major part of Greenidge’s US footprint, so the pause affects a sizable share of the company’s output.

Bitcoin Mining Economics Under Pressure

Mining profitability is under strain across the board as network difficulty climbs and competition increases. Based on recent market data, margins are tighter than in prior cycles, making every hour of offline time more costly.

Investigation And Recovery Timetable

According to the company, crews are working to restore service and Greenidge expects a return to normal operations within a few weeks.

That timetable is provisional and tied to the results of inspections and replacement of damaged switchgear. Regulators and insurers will likely review the incident, and an internal investigation is expected to clarify the cause of the failure and whether any maintenance gaps contributed.

Stakeholders will watch closely for confirmed repair schedules and any disclosures about lost bitcoin production or costs tied to the outage. Co-hosts will also monitor whether the incident prompts changes to safety practices or contract terms for hosted rigs.

Featured image from FMC Fire, chart from TradingView

The Hong Kong High-Rise Fire Shows How Difficult It Is to Evacuate in an Emergency

✇Homeland Security Newswire
By: Guest Writers
28 November 2025 at 06:48
11/28/25
EMERGENCY EVACUATIONS
Enable IntenseDebate Comments: 
Enable IntenseDebate Comments

The Hong Kong high-rise fire, which spread across multiple buildings in a large residential complex, has killed dozens, with hundreds reported missing.

read more

U.S. plans growth in JAGM and Hellfire production pipeline

✇Defence Blog
By: Colton Jones
27 November 2025 at 04:04
The United States is preparing for a large-scale expansion of its sustainment and supply chain framework for the Army’s Joint Air-to-Ground Missile (JAGM) and AGM-114 Hellfire systems, according to a new notice from the Defense Logistics Agency. Both missile families are manufactured by Lockheed Martin, the long-time prime contractor responsible for their production and lifecycle […]
❌
❌