Category Archives: robots

A nice etch a sketch build

I like this build, the author with 2 steppers, an RPi, build this to draw pictures on an etch-a-sketch, could be a good way to into for kids into CNC or robotics. Bot Makes Etch A Sketch Art In One … Continue reading

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Cool CNC robot for sand (or spray gun)

Nice looking build for a robot (CNC based to write stuff out in sand, or adapted to use spray cans. Spraychalk Anoints your Sidewalks with Precision Sandprints main site https://openbuilds.com/builds/cnc-sand-and-spraycalk-drawmaschine.4792/

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Make your own sand printing robot

Nice build.  Most of it was 3D printed and I like the use of the servo and a “stick” to write in sand.  Downside, it seems to move pretty slow. https://gizmodo.com/this-automated-sand-printer-is-ready-to-flood-your-inst-1827313521

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Convert a windshield wiper motor into a servo

Servos are expensive for a motor, so if you need a big one, this is a nice alternative to buying one.  The author uses a windshield motor, pot, an arduino, to build one. Supersize DIY R/C Servos From Windscreen Wipers

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Nice arduino robot build

This is a water boat build, it would be a great project to do with kids. https://www.instructables.com/id/Waterbot-Arduino-Robot-Boat/

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3D print out your own automatic shade winders

The directions are in…Polish?  But the pictures are pretty good.  I like the build and looks pretty easy to make (just need to find where the motor/gear set came from). https://www.instructables.com/id/3D-Pprinted-Automatic-Window-Blinds/

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Build your own mini tank

Out of a wheelchair initially.  Nice build and was alot of work from the looks of it. On The Right Tracks: Electric Wheelchair Guts Find New Life As Tank

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Speed control without an arduino

Basically you are using a stepstick (motor controller) like board with some resistors  and caps to make a user controlled motor. http://www.instructables.com/id/Stepper-Motor-Speed-and-Direction-Control-Without-/

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Cool robot arm build

The build is pretty neat, the author posted up STL for 3D printing the arm out, even thought it was laser cut.  Looks like you can convert it either way. https://www.thingiverse.com/thing:2899185

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Print out your own tank treads

Cool idea. Me, I think I will just buy them since the amount of time to print out each tread could take my printer for ever. 3D Printed Tank Tracks

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