Let's Make Robots!

BoB the Biped and Me: BoB finally gets his lights.

Finally got viable PCBs for the LED array. Even still I burned up two out of three of the boards and several microcontrollers with various mistakes but the last one was a winner.

Front and back:


Wander autonomously, increase team pride, celebrate with dance and lights
Using a
  Introduction: SilentBoB is a 4DOF biped walker that uses the BoB the BiPed chassis created by K120189. The BoB chassis was printed out by isotope in … Read more
Reads back content from the Shout Box
UPDATE: Added files and blog about the project. It has been a dream of mine to have the Shout Box read to me so I can feel like there are people of my ilk hanging … Read more

Shout Box talking RPi: Trials and tribulations

A nice perk of LMR is the Shout Box, LMR's own little chat room. Many times I've been struck by motivation to solder/etch/hotglue/bodge something just through the good maker-mind energy in the SB but, alas, I would have to hang up the phone, if you will, if I were to head to the workbench. "Gee," I thought, "wouldn't it be awesome to have the Shout Box read to me so I can laugh and cry and work on a project all at once?" Yes, and it is awesome.

BoB the Biped and Me: Asthetics phase complete

When the long awaited Rev. B PCBs arrived it didn't take long to realize I'd mucked things up again. I'd forgotten to connect any of the I2C lines. So now I'm waiting for Rev. C which is back from fab and will soon be sent to me.

So instead of working on that I set out on wrapping up some finishing touches on BoB's outfit. I found a lot of good things to add recently. One thing I found was some Stikfas Cuboyd robot toys:

Within moments of receving them...

BoB the Biped and Me: BoB gets a 'hawk, naturally.

In general news: The Rev. B boards have been taking a tour of San Diego. Looking at the ZIP codes provided by the tracking info says they're getting closer. They might even be here tomorrow, who knows.

So with that nonsense going on I figured I might as well dig into fleshing out ole BoB here. I wanted to add more team spirit and I thought getting hair in a Mohawk style was a no-brainer, right? And in team colors, with the more modern team pallete using darker blue and neon green:

BoB the Biped and Me: Tested, approved, and waiting for Rev. B PCBs. First vid with chickenparmi's sweet LMR bumper :D

BoB's edge detectors worked fine at home but in his operating environment at a bar he was failing miserably. There were many false edge detections while walking over safe ground. The high gloss surface of the bar was reflecting light under his feet during even the slightest wobble when he put down his feet (the point where the edge sensors were read). This led to him backing up into hazards I was trying to avoid.

BoB the Biped and Me: Edge detection vid and fun assembly vid (updated)

After spending a good deal of time working on a couple of BoB's subassemblies I've been given some time to think more about how to use those extra headers on the circuit board. I really want bump detection, edge detection, and a speaker but I know only one or two of those are going to fit inside the chassis. After letting BoB wander around on the floor at length I realized how prone he is to toppling over. That plus the fact he will be spending time on a bar, where sinks full of water lurk below, I decided to work on the edge detection.

BoB the Biped and Me: LEDs, camera, action! (updated)

I finally got a quartet of routines that produce pleasing lighting effects out of BoB's toothless grin. Using CYZ-RGB LED pixels for hardware. If you have any other ideas for light sequences I'd love to hear them, please.

edit - July 14th, 2013

Added test code slightly different that what is seen in the video but essentially the same.

BoB the Biped and Me: We celebrate the Seahawks! (updated)

Just a place to put a link to the video of BoB dancing while I applaud. I'll update with more info in the future. Gotta meet my buddy at the pub in a few minutes, hence the brevity.

There are four total dance moves, I think the video only caught three of them (they're randomized).

Update: July, 14th, 2013-

A schematic of of the detection circuit: