With the price of gas these days, it's no wonder people are skittish when it comes to mowing lawns. What's more, gas-powered mowers have been shown to pollute up to 7 times as much as vehicles. Sure, you could go get a manual mower and get some exercise, but why do that when you can convert your gas-powered mower into an electric one? This modification takes you through three steps to do just that, including: removing the engine and installing an electric replacement, converting the engine to one powered by solar panels, and installing the solar panel. Expect conversion costs to run around $1,500. Of course, you could always just buy a Huskvarna and skip all this tomfoolery.

Robotic lawn mowers have been keeping yards tidy for their masters for a good while now, but Husqvarna is looking to teach an old robot new tricks with its Automower. As expected, the grass muncher is ultra-quiet and outputs zero emissions, and you can even program it to take off and get to work whenever you please. Reportedly, a fully charged battery can get about 40 minutes of cutting done, and best of all, the unit will automatically return to its charging base to juice back up if the sun isn't out. Still, with a price tag of around £2,000 ($3,971), you may just be better off paying that punk kid down the street to handle your mowing needs.

[Via Pocket-lint, video at Megawhat]

iRobot may own the market for autonomous indoor cleaning devices, but when it comes to taming that wild jungle you call a backyard, the new king of the hill may well be the LawnBott LB3500. This fourth-generation LawnBott from Kyodo America improves upon its predecessors in nearly every category: even though it weighs ten pounds less than the entry-level LB2000, it offers up a greater coverage area, increased cutting width, greatly improved incline climbing capability, longer runtime, and best of all, a Bluetooth radio for programming or direct control by cellphone. Of course, all these high-end features don't come cheap, and when the LB3500 does come to market (date: unknown), we imagine that it's gonna cost a good deal more than the current high-end, $2,500 LB3200. Check out the gallery below for some more angles.

Update: Wow! Reader John Locke somehow managed to send an email from the island notifying us that The Robot Store has the LB3500 listed at $3,699, on sale for "only" $3,249. Also available is the "Super" LB3500, which is really just a kit that includes two extra lithium-ion batteries and tacks almost $600 on to the price. Thanks, John, but we bet Jack and Kate won't be too happy when they find out you have Gmail access.



[Via Slashgear]

In what we surely hope isn't the opening salvo of the robot insurrection, a 45-year old Danish municipal worker was tragically killed by an industrial robotic lawnmower this afternoon, after the unit tumbled off a slope and onto the poor fellow doing his job. Although we've seen quite a few robotic lawnmowers, we're not too familiar with the RC-controlled Dvorak Spider 01 unit the man was using; our only hope is that this is, of course, an isolated incident.

Sure, you could be boring and just buy a remote control mower all primed and ready to go, but where's the fun in that? Friendly hacker Terry is sharing his instructions for building your very own Destroyer of Lawns, and it doesn't sound too terribly hard as far as awe-inspiring hacks go. The lawnmower cannibalizes parts from a powered wheelchair, requires a bit of electronics knowhow to get the RC bits to interface with the wheelchair control, and the rest is pretty much welding. The Hack-A-Day folks recommend recommend a failsafe for shutting off the mower if it loses radio communications, but they were always worrywarts like that.

[Via Hack-A-Day]

If EEStor's elaborate claims are to be believed, we suppose all these other fuel alternatives should just hang up the gloves while they're at it, but just in case things don't pan out so well, we suppose the continued research in hydrogen fuel cell power isn't such a bad idea. Although we've seen glimpses of hydrogen-powered vehicles (and um, crafts) in the past, most of these modes of transportation have been large-scale, and now it seems that a closed system has been crafted which would make these techniques suitable for more diminutive applications such as chainsaws and lawnmowers. The research team has reportedly found a way to better control the way the fuel is used, thus eliminating the need for costly recycling stations, and they insinuate that their findings are "ideal" for devices currently using small internal combustion engines that lack emissions controls. Of course, the system has yet to be broadly trialed, but if things go as planned, there's even hopes to link several of the new cells together to rival the power of cells currently being tested in the automotive industry.

First Roomba, then came Scooba, next up: an iRobot lawnbot? Well, according to a Forbes profile of everybody's favorite domestic-botmaker, iRobot's working on a bomb sniffer to round out its compliment of functional droids, as well as "a robot lawn mower." Yep, another one of those things. So, what shall it be named, we wonder? We'd put our cash on Lawnie, but we'll still hit up the 5:1 on Lawnba. Just be sure and stay away from the 10:1 on Yardba, though, that one's definitely not gonna happen.

[Via GoRobotics]