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Lots of stuff. Like, lots.

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Long gaps between posts are a sure sign of either nothing getting done or a whole lot of stuff happening. In this case something of the latter. Since the last post, I extracted the shop vac, which is now living happily in the attic with Bob, our friendly funnely spider who lives right by where your face emerges from the stairs to the attic and who we met while taking down the xmas decorations this year.

So Bob’s new companion shop vac joined the mitre saw which I have no room for in the shed, and I kicked and prodded the new cart until it fitted into where the vac used to be.

It almost looks tidy if you don’t look too close or turn around…

Yeah, that’s why you don’t want to look too close.… Read the rest

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Mark Dennehy in 4 Comments

More toys…

ElectronicsNew Toys!

So at the same time that I bought the lidar, I had dropped about a hundred euro on aliexpress on other stuff as well. Most were presents or non-present things for xmas or general stuff like torches, but a few were just for me to play around with on the Raspberry Pis that have been building up around here — an old project came home from work and I realised I had one Raspberry Pi B+, two Zeros and three Zero Ws, one of which I had ordered back in October because I had literally lost one of the two Zeros in my toolbox.

Yes, you can now lose a complete linux computer (which costs a fiver, I’m not rich) in your toolbox. It doesn’t even have to be that full.… Read the rest

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Mark Dennehy in 4 Comments

New Toy…

ElectronicsGeneralHardware
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New Toys!Robotics

Way back in the mists of time, I mentioned how we had laser scanners in the CVRG (one of which was mounted on Dagda for a while). We used the SICK for a long while, which is a block of steel that’s pretty adept at toe crushing, only scanned through a partial circle and was enormously expensive (and later we acquired a 3D scanner which was even more expensive but could at least do 360 degrees). That was fifteen years ago though. 

Meet the modern version: 

The YDLIDAR X4, evolved from roomba sensors and possibly a knockoff of a slightly more well-known sensor. Weighs next to nothing, costs $80, fits in the palm of your hand, scans through 360 degrees seven times a second taking 5000 samples in the process (so about half-degree resolution), ranges out to ten meters on a good day with a following wind. … Read the rest

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Mark Dennehy in 2 Comments