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Knowing the Bits and Bytes that Make Images Live in Memory

We know we’re living in the future because there’s hi-resolution, full color images plastered on every high-density screen in sight. Of course this comes at a cost, one that’s been hidden away by the myriad improvements in the way we digitally represent those pretty pixels and how we push them to the screens. Nobody thinks about this, except those who...

Light Bulb Plant Propagation Station is a Bright Idea

We’ve always enjoyed having a few indoor plants around the Hackaday dungeon because they just make the days more cheerful. Apparently there’s a big craze for them right now, which has led to price increases of things like propagation stations — places where cuttings from mature plants go to grow a root system before getting planted in dirt. Many plants...

Phase Coherent Beamforming SDR

The days when software defined radio techniques were exotic are long gone, and we don’t miss them one bit. A case in point: [Laakso Mikko’s] research group has built a multichannel receiver using 21 cheap RTL-SDR dongles to create a phase coherent array. This is useful for everything from direction finding and passive radar or beam forming. The code...

Upgrade A 3D Printed CNC Milling Machine By Using It

One of the original ideas behind the RepRap project was for the machines to create their own upgrades. That philosophy is shining brightly in [Ivan Miranda] CNC milling machine project, which has been used to upgrade its aluminum and 3D printed frame components to steel. For precision machining on hard metal, machine rigidity is of utmost importance....

Working LEGO Space Computers are a Chip off the Old Block

We all have our favorite classic LEGO bricks, and wouldn’t be surprised if one or more of the various space computers showed up on pretty much everyone’s list. [dyoramic] loves them so much that they built two different working versions that do different things. The first one is about six times the size of the original brick. Inside the 3D printed...

Cablecam Is An Exercise In System Integration

Drones have become the standard for moving aerial camera platforms, but another option that sees use in the professional world are cable cameras. As an exercise in integrating mechanics, electronics, and software, [maxipalay] created his own Cablecam. Cablecam is build around a pair of machined wood plates, with some pulleys and motor reduction gearing...

New Part Day: An ESP With ZigBee

It seems that the folks at Espressif are doing their best to produce chips to fit every possible niche in the microcontroller-with-radio market, because here comes news of their latest chip bearing the ESP32 name: a single-core 96MHz RISC-V part with built-in IEEE 802.15.4 to support ZigBee 3.x and Thread 1.x. The ESP32-H2 is not the most powerful of...

Better Mousetraps (or Screw Drives) Don’t Always Win

I’ve noticed, lately, that slotted screw heads are all but gone on new equipment. The only thing that I find remarkable about that is that it took so long. While it is true that slotted heads have been around for ages, better systems are both common and have been around for at least a century. Check out those cool threads. The reason slotted heads...

We’re Hiring: Come Join Us!

You wake up in the morning, and check Hackaday over breakfast. Then it’s off to work or school, where you’ve already had to explain the Jolly Wrencher to your shoulder-surfing colleagues. And then to a hackspace or back to your home lab, stopping by the skull-and-cross-wrenches while commuting, naturally. You don’t bleed red, but rather #F3BF10. It’s...

Semiconductor Shortage? Never Mind That, There’s A Vacuum Shortage!

As those of us who work in electronics are grappling with a semiconductor shortage making common devices unobtainable and less common ones very expensive, it’s worth noting that there’s another supply crunch playing out elsewhere in the electronics industry. It’s not one that should trouble most readers but it’s a vexing problem in the guitar amp business,...

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