Category Archives: lipo

Cheap Strain Relief By Casting Hot Glue in a 3D Print

[Daniel Roibert] found a way to add cheap strain relief to JST-XH connectors, better known to hobby aircraft folks as the charging and balance connectors on lithium-polymer battery packs. His solution is to cast them in hot glue, with the help of 3D printed molds. His project provides molds fitted …read more

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Posted in 3d printed, 3d Printer hacks, battery, casting, drone hacks, hot glue, how-to, JST, jst-xh, lipo, mold, rc, strain relief | Leave a comment

Hackaday Links: December 15, 2019

When you’re right, you’re right. Back in January, we predicted that exoskeletons were about to break out as a mainstream product, and gave several examples of prototypes poised to become products. So it was with interest that we read about Sarcos Robotics and their new Guardian XO, a cyber suit …read more

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Posted in battery, Circuit Sculpture, e-scooter, exoskeleton, Extinction Rebellion, Hackaday Columns, Hackaday links, labview, lipo, maker faire, PLA, protest | Leave a comment

Protect Your Batteries Before You Wreck Your Batteries

[Jan] is solving a problem many of us have had, deeply discharging our project’s batteries and potentially damaging the cells.

His board can handle batteries from 6 to 34 volts and supports both LiPo or Lion batteries. The board can be flexible about its cut-off voltage. It also has a …read more

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Posted in battery, lion, lipo, protection, The Hackaday Prize, The Hackaday Prize 2019 | Leave a comment

Better Battery Management Through Chemistry

The lead-acid rechargeable battery is a not-quite-modern marvel. Super reliable and easy to use, charging it is just a matter of applying a fixed voltage to it and waiting a while; eventually the battery is charged and stays topped off, and that’s it. Their ease is countered by their size, …read more

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Posted in battery, battery analysis, battery life, battery technology, chemistry hacks, Engineering, Featured, lipo, lipo battery, lithium, lithium battery, lithium cell, lithium ion, lithium polymer, Lithium-ion battery, Original Art, science | Leave a comment

Charge All Your Batteries With USB PD

USB-C has been around for a while, and now that it can charge phones and Macbooks and Thinkpads, the hackers are starting to take note of power adapters that can supply lots of current. [Alex] was turned on to USB-C after he charged a laptop, Nintendo Switch, and phone with …read more

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Posted in hardware, lipo, USB C, USB-PD | Leave a comment

Plug Your Ears And Hop On This Jet-Powered eBike

Ah, the simple pleasures of a bike ride. The rush of the wind past your ears, the gentle click of the derailleurs as you change gears, the malignant whine of the dual electric jet turbines pushing you along. Wait, what?

Yes, it’s a jet bike, and its construction was strictly a case of “Why not?” for [Tech Ingredients]. They recently finished up a jet engine build using a hybrid design with electric ducted fans as compressors and fueled with propane. It was quite a success, and pretty spectacular, but left an embarrassment of riches upon its passing in terms of …read more

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Posted in 12s, Ducted Fan, ebike, EDF, esc, jet engine, lipo, transportation hacks | Leave a comment

Tiny Solar Energy Module (TSEM) Brings Big Performance

The Tiny Solar Energy Module (TSEM) by [Jasper Sikken] is not only physically tiny at one-inch square, but it is all about gathering tiny amounts of solar energy — amounts too small to be useful in a conventional sense — and getting meaningful work done, like charging a battery for later use. Elements that make this board easy to integrate into other projects include castellated vias, 1.8 V and 3.3 V regulated outputs that are active when the connected battery has a useful charge, and a low battery warning that informs the user of impending shutdown when the battery runs …read more

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Posted in battery charger, charger, energy harvesting, lipo, pcb, solar, solar hacks, The Hackaday Prize | Leave a comment

Charging USB-C Devices Off Of LiPo Battery Packs

When it was introduced in the late 90s, USB was the greatest achievement in all of computing. Gone were the PS/2 connectors for keyboards and mice, ADB ports, parallel ports, game ports, and serial ports. This was a Tower of Babel that would unite all ports under one standard universal bus.

Then more ports were introduced; micro, mini, that weird one that was a mini USB with more connectors off to the side. Then we started using phone chargers as power supplies. The Tower of Babel had crumbled. Now, though, there is a future. USB-C is everything stuffed into one …read more

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Posted in lipo, The Hackaday Prize, USB C, XT-30 | Leave a comment

Ultra-Low Power, Energy Harvesting Battery Charger

This half-inch square ultra-low power energy harvesting LiPo cell charger by [Kris Winer] uses a low voltage solar panel to top up a small lithium-polymer cell, which together can be used as the sole power source for projects. It’s handy enough that [Kris] uses them for his own projects and offers them for sale to fellow hackers. It’s also his entry into the Power Harvesting Challenge of the Hackaday Prize.

The board is essentially a breakout board for the Texas Instrument BQ25504, configured to charge and maintain a single lithium-polymer cell. The BQ25504 is an integrated part that takes care …read more

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Posted in battery charger, BQ25504, charger, energy harvesting, lipo, low power, SensorTile, solar, solar hacks, The Hackaday Prize | Leave a comment

Battery-Powered Watering Timer Converted to Solar on the Cheap

Watering the garden or the lawn is one of those springtime chores that is way more appealing early in the season than later. As the growing season grinds along, a chore that seemed life-giving and satisfying becomes, well, just another chore, and plants often suffer for it.

Automating the watering task can be as simple as buying a little electronic timer valve that turns on the flow at the appointed times. [A1ronzo] converted his water hose timer to solar power. Most such timers are very similar, with a solenoid-operated pilot valve in line with the water supply and an electronic …read more

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Posted in home hacks, irrigation, lipo, pv, solar, solenoid, timer, valve, watering | Leave a comment