The sport of fencing requires keeping score, just like so many other similar pastimes. When their club’s existing scoring rig broke, [jc0025] stepped up to build a scoring box of their own, using the typical tools of the maker trade.

The brains of the operation is an Arduino Nano, running the venerable ATmega328P. It’s set up to drive a pair of 8×8 WS2812B addressable LED panels. It’s also hooked up to a pair of fencing socket blocks, which hook up to the lamé (jacket), weapon, and guard of each player for electronically scoring hits. The Arduino is thus programmed to respond to various conditions, lighting the LEDs in turn. For example, the tip of one player’s weapon hitting the other player’s lamé will fire a colored light, allowing the hit to be scored. Meanwhile, a tip hitting the floor will fire a white light, indicating off-target. There’s also a buzzer for sonic indication, as well. Everything is wrapped up in a tidy 3D-printed housing, while power is courtesy of a USB-C charger hooked up to the unit.

If you’re looking to replace some old broken fencing scoring gear on the cheap, this project is probably a good place to start. We’ve featured some other great scoreboard projects over the years, too. Meanwhile, if you’re whipping up your custom own gear for your local sporting club, we might like to hear about it on the tipsline.

For year after year, more Americans have bought Toyota RAV4s than anything that isn't a pickup truck. The brand's reputation for solid reliability has kept it ahead of SUVs from other automakers, and the nation's embrace of SUVs and crossovers relegated the poor old Camry to near-bottom of the top 10. For the latest generation—the sixth since 1994—all RAV4s are electrified. Most will use a mix of internal combustion engine and brakes to recharge their hybrid powertrains' traction batteries, like the millions of Priuses out there on the roads. But there's also a plug-in hybrid EV option, with an all-new powertrain with some noticeable improvements compared to the outgoing PHEV.

Just as Toyota's designers and engineers have tried to improve on the previous RAV4 with each successive generation, their counterparts in the powertrain department have similarly been iterating and improving the combination of electric motors and piston engine. Under the hood there's a naturally aspirated 2.5 L four-cylinder engine that operates on the Atkinson-cycle, aided by variable valve timing on both intake and exhaust sides.

The engine, which on its own generates 186 hp (139 kW) and 172 lb-ft (233 Nm), is connected to one of two electric motors under the RAV4's hood, as well as to Toyota's electronically controlled variable ratio transmission.

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An Australian-designed cargo ship just did something no purpose-built military landing vessel has managed before, driving stern-first onto a beach near Darwin, holding position while it dropped a ramp wide enough to drive tanks off, then reversing back out to sea in under a minute. The 73-meter (240-foot) vessel, named Matilda 1, is a stern […]