Category Archives: power

Anatomy Of A Power Outage: Explaining the August Outage Affecting 5% of Britain

Without warning on an early August evening a significant proportion of the electricity grid in the UK went dark. It was still daylight so the disruption caused was not as large as it might have been, but it does highlight how we take a stable power grid for granted.

The …read more

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Posted in electricity grid, news, power, power grid, utility | Leave a comment

Spin Me Right Round, Baby: Generator Building Experiments for Mere Mortals

How many of you plan to build a wind-powered generator in the next year? Okay, both of you can put your hands down. Even if you don’t want to wind your coils manually, learning about the principles in an electric generator might spark your interest. There is a lot of …read more

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Posted in 3-phase, alternating current, alternative fuel, alternative power, current, dynamo, Educational, generation, generator, how-to, magnet, motor, power, three-phase, turbine, wind | Leave a comment

Pop-Up Outlet Helps Make the Most of a Tiny Shop

You’ve got to admire the steps some people take to squeeze a shop into a small space. Finding ways to pack in ever more tools and to work on bigger and bigger projects become ends to themselves for some, and the neat little tricks they find to do so can …read more

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Posted in bench, optimization, outlet strip, pneumatic spring, power, shop, small, tiny, tool hacks | Leave a comment

Wireless Charging Without so Many Chargers

[Nikola Tesla] believed he could wirelessly supply power to the world, but his calculations were off. We can, in fact, supply power wirelessly and we are getting better but far from the dreams of the historical inventor. The mainstream version is the Qi chargers which are what phones use to charge when you lay them on a base. Magnetic coupling is what allows the power to move through the air. The transmitter and receiver are two halves of an air-core transformer, so the distance between the coils exponentially reduces efficiency and don’t even think of putting two phones on a …read more

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Posted in charging, mobile, Nikola Tesla, power, tesla, wireless, wireless hacks, wireless phone charging, wireless power transfer | Leave a comment

Weather Station Is A Tutorial in Low Power Design

Building your own weather station is a fun project in itself, but building it to be self-sufficient and off-grid adds another set of challenges to the mix. You’ll need a battery and a solar panel to power the station, which means adding at least a regulator and charge controller to your build. If the panel and battery are small, you’ll also need to make some power-saving tweaks to the code as well. (Google Translate from Italian) The tricks that [Danilo Larizza] uses in his build are useful for more than just weather stations though, they’ll be perfect for anyone trying …read more

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Posted in arduino, battery, code, Microcontrollers, NodeMCU, optimization, panel, power, solar, Station, weather | Leave a comment

Save Fingers, Save Lives With A No-Voltage Release For The Shop

Imagine the scenario: you’re spending some quality time in the shop with your daughter, teaching her the basics while trying to get some actual work done. You’re ripping some stock on your cheap table saw when your padiwan accidentally hooks the power cord with her foot and pulls out the plug. You have a brief chat about shop safety and ask her to plug it back in. She stoops to pick up the cord and plugs it back in while her hand is on the table! Before you can stop the unfolding tragedy, the saw roars to life, scaring the …read more

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Posted in dangerous restart, e-stop, no-voltage release, NVR, power, power tools, switch, tool hacks, workshop safety | Leave a comment

PTPM Energy Scavenger Aims for Maintenance-Free Sensor Nodes

[Mile]’s PTPM Energy Scavenger takes the scavenging idea seriously and is designed to gather not only solar power but also energy from temperature differentials, vibrations, and magnetic induction. The idea is to make wireless sensor nodes that can be self-powered and require minimal maintenance. There’s more to the idea than simply doing away with batteries; if the devices are rugged and don’t need maintenance, they can be installed in locations that would otherwise be impractical or awkward. [Mile] says that goal is to reduce the most costly part of any supply chain: human labor.

The prototype is working well with …read more

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Posted in battery, energy harvesting, generator, green hacks, LTC3331, magnetic induction, piezo, piezoelectric, power, recharge, rechargeable, selectable voltage, sensor, sensor node, solar, solar hacks, supercap, The Hackaday Prize, Thermal, thermoelectric, wireless | Leave a comment

Tricking A Vintage Clock Chip Into Working On 50-Hz Power

Thanks to microcontrollers, RTC modules, and a plethora of cheap and interesting display options, digital clock projects have become pretty easy. Choose to base a clock build around a chip sporting a date code from the late 70s, though, and your build is bound to be more than run-of-the-mill.

This is the boat that [Fran Blanche] finds herself in with one of her ongoing projects. The chip in question is a Mostek MK50250 digital alarm clock chip, and her first hurdle was find a way to run the clock on 50 Hertz with North American 60-Hertz power. The reason for …read more

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Posted in mains, MK50250, Mostek, power | Leave a comment

Monitor Power Consumption of Low-Power Devices

Perhaps the most important consideration to make when designing a battery-operated device of any kind is the power consumption. Keeping it running for longer between battery changes is often a key design point. To that end, if you need to know how small programming changes will impact the power consumption of your device then [Daniel] has a great tool that you might find helpful: an ESP8266-based live power meter.

The power meter itself is battery-powered via a 600 mAh battery and monitors an e-paper module, which also displays information about power consumption. It runs using a NodeMCU and measures voltage …read more

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Posted in meter, NodeMCU, power, tool hacks, usage | Leave a comment

Careful Testing Reveals USB Cable Duds

What’s worse than powering up your latest build for the first time only to have absolutely nothing happen? OK, maybe it’s not as bad as releasing the Magic Smoke, but it’s still pretty bewildering to have none of your blinky lights blink like they’re supposed to.

What you do at that point is largely a matter of your troubleshooting style, and when [Scott M. Baker]’s Raspberry Pi jukebox build failed to chooch, he returned to first principles and checked the power cable. That turned out to be the culprit, but instead of giving up there, he did a thorough series …read more

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Posted in jack, misc hacks, plug, power, Raspberry Pi, testing, usb | Leave a comment