YANBO: Yet Another Nameless Bot

Let's Make Robots Robots
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All my project ideas needed CNC motion, which was due, at least in my shop, for a standardized approach which will hopefully classify the extruder, laser diode, and (eventually) laser scanner and vision system as forks of this foundation project. ServoCity stands out in my mind for the unified system of drives, mounts, adapters, and so on. YANBO uses 4 of their standard mounting plate C, 4 standard lightweight hubs, a 1.5" channel, and a bag of cap screws, plus some odds and ends from the local hardware store. Next motion base I'll just budget for a servoblock for each servo. That way the right angles and bearings come in the same box, rated for cantilever loads. The Arduino is YANBO's initial controller because it's so simple to test servos with. Got the BeagleBoneBlack reflashed with Debian, now just need to take LinuxCNC/Machinekit to the finishline. This will bring the Hardware Abstraction Layer, inverse kinematics, and lots of other 32 bit goodies. The protractor form is from my radar days- http://www.weathergraphics.com/reference/ . Fascinating site in its own right.

A few days later, having replaced the PC power supply with the 6 and 12v batteries on hand, moving YANBO to a bigger baseboard, and adding an upper tray for all that support gear, the umbilical wiring had an elegant solution- upstairs. Glad I used 180 degree servos!

I'd been thinking of a quick-change tool mount, but wiring both heater/nozzles, even with only 1 thermocouple, was making that and my servos' ability to move it accurately and reliably increasingly dubious. But I'd devoured Byerly's CCSR buildlog and vids during this time. After all, my BBB is a yocto-compliant Angstrom (now Debian) board.

And I've got 6 of Pololu's micro gearmotors just begging to power a small fleet of Pololu mini sumobots. 1 for each of my microcontrollers. The OWI arm will soon become mobile, YANBO will fork into a pair of arms, each on treads. One will be optimized for laser, one for the extruder. Will add more pix tomorrow.

This is a companion discussion topic for the original entry at https://community.robotshop.com/robots/show/yanbo-yet-another-nameless-bot
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Thank you, too, Yahmez.

Thank you, too, Yahmez. Seems Kickstarters keep paying to re-iterate the precision relative motion machine, lol. This is the part where I could wax or ramble philosophic about low mass, clean lines, inherently low cost & pollution, but it’s past my bedtime. More pix on the way!

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A delta table?
What about using a delta mechanism (like some 3d printers)? That should be robust enough for the uses you want.

I think I want to build a large delta printer some day in the future. I’ve read an article where people have used an inverse delta table with a standard mill: they keep the mill head still and let the table move under it. That would make for a nice CNC system for a mill, and if you can replace the head (or move it out if the way), you could use the table for 3d printing, scanning, and laser cutting.

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Delta Mechanism Approach

@DT: Sorry I took so long responding. Thanx for the depression thread. Mostish/ mostish describes my last few decades fairly well, and gives me a lot more perspective. Fortunately my steady job is mostly about (trained) eye-hand co-ordination lol.

Seems that most components design easier upside down. Yes, placing the build bed atop the Delta carriage and below a fixed printhead would produce a similar motion profile, albeit inheriting the frame hassles of a cartesian design. That said, Machinekit/Linuxcnc running on a Beaglebone or Intel should still work fine.

Something I haven’t sketched yet is using a WP or printer platen to power a neoprenish conveyor below the obvious print carriage.