Will Jessop's Writings

Sailing, Food, Programming, Technology, and other things

Do you have a Ruby on Rails application you'd like to be faster, more scalable, or just upgraded safely? I'm currently open to new contracts doing Ruby on Rails and Postgres scaling and performance work, and Rails upgrades. Contact me at will@willj.net to get started.
| tags:robotics tech electronics 3D Printing

New robot base design and completed prototype arm assembly

I spent all day at hacman¬†Tuesday and Wednesday printing and tweaking robot parts. I put it all together when I got home. This is the front, the lifter arm has holes to allow me to screw in different attachments, I’ve still not designed that part of the robot yet:

The robot, mostly assembled

The robot, mostly assembled

Here is the back view, you can see the lifter arm gear housing (the curved structure) and the motor that drives it, also the battery (underneath the ball hopper)

The rear of the robot with the hopper in place

The rear of the robot with the hopper in place

The lifter arm gear system looking through where the hopper would be:

The robot without the hopper in place

The robot without the hopper in place

I need to design an attachment for the end of the lifter arm. Here I’ve created a simple one using meccano. It’s too heavy, the bolts catch on the floor and it dumps the ping-pong balls short of the hopper. Other than that it’s perfect. You can see the camera with capped lens that I’ve just wedged into the structure temporarily:

A prototype lifter arm made from meccano, attached to the robot

A prototype lifter arm made from Meccano

Next-up: better lifter attachment design, a couple of re-prints with tweaks and some software.