This sand drawing robot draws in the sand

YouTuber Ivan Miranda built a 30 pound robot using 50 miniature servos that writes messages in the sand.

I made a sand drawing robot with 50 miniature servos and a two half tanks, I use an Arduino Mega 2560 to read from an sd card a text file with the desired image and send the servo position data to another two Arduino Mega that then send the adequate signals to the servos. 5 DC to DC converters connected to a 6S LiPo battery provide enough power to support the stalling current of all the 50 servos at once. Two half tanks provide enough grip and torque to drag all the servos through the sand. The entire thing weighs around 14 Kg in working order (with the batteries on) so I had to build a tailor made trailer to cary the thing as there's quite a walking distance to the test field.

This is the perfect invention for when you're stranded on a desert island, which is why I recommend every single person always carry one with them at all times. Sure, it's gigantic and weighs 30 pounds, but you'll get the last laugh when your "Help" message is perfectly spaced and legible and your fellow strandees are using coconuts like a bunch of chumps.

Keep going for the full video of the robot in action, along with Miranda's previous version, which was slower but had more contrast.

And here's his previous version:

Visualizing the life-cycles of berries

Twitter user @AlfieDaye shared the life-cycle of a blackberry, sparking others to post their own versions of other berries. There's something so satisfying about seeing nature laid...

The SlothBot is a slow-moving energy-efficient observation robot

Robotics engineers at Georgia Tech have built a SlothBot for use in the Atlanta Botanical Garden, which mimics the low-energy lifestyle of real sloths for extended continuous...

Police Forces To Get Flying Video Drones

Both the Miami-Dade, Florida and Houston, Texas police departments will soon be adding a new officer to the force -- the Micro Air Vehicle (MAV), made by...

High Tech: What The Inside Of A Modern Farm Tractor Looks Like

This is a video of Laura of Youtube channel Laura Farms giving a tour of the interior of her new model John Deere tractor. Crazy, I always...

Yesterday's Technology, Today: Woman Builds Herself A Rotary Cellphone

This is the rotary cellphone built by Brookhaven National Laboratory engineer Justine Haupt. Looks pretty sweet doesn't it? Reminds me of the good ol' days when I...

Well That's Something: A Four Neck Electronic Guitar Played With A Barcode Scanner

This is a video of James Bruton demonstrating and discussing his Barcode Guitar, an electronic guitar with four necks covered in barcodes that's played using a regular...

This sand drawing robot draws in the sand

\n\nYouTuber Ivan Miranda built a 30 pound robot using 50 miniature servos that writes messages in the sand. \n\n

I made a sand drawing robot with 50 miniature servos and a two half tanks, I use an Arduino Mega 2560 to read from an sd card a text file with the desired image and send the servo position data to another two Arduino Mega that then send the adequate signals to the servos. 5 DC to DC converters connected to a 6S LiPo battery provide enough power to support the stalling current of all the 50 servos at once. Two half tanks provide enough grip and torque to drag all the servos through the sand. The entire thing weighs around 14 Kg in working order (with the batteries on) so I had to build a tailor made trailer to cary the thing as there's quite a walking distance to the test field.

\n\nThis is the perfect invention for when you're stranded on a desert island, which is why I recommend every single person always carry one with them at all times. Sure, it's gigantic and weighs 30 pounds, but you'll get the last laugh when your \"Help\" message is perfectly spaced and legible and your fellow strandees are using coconuts like a bunch of chumps.\n\nKeep going for the full video of the robot in action, along with Miranda's previous version, which was slower but had more contrast.