Yup, those Bluesmirfs are money. I had some issues with the drivers for the bluetooth dongle I ordered from Sparkfun initially, but once I was past that it was pure love. My thinking is that the dongle will go on the johnny 5, and the bluesmirf will go on a future brat or other bot to run as a minion. I really am feeling a custom 3dof quadrapod using sub micro servos though
I used a Canon Power Shot SD400 5.0mega pixel camera.
The secret that I used to take ultra clear pictures was to mount the camera on a tripod and use the timer setting to automatically shoot the picture. This way the camera was ultra still. Sometimes when you take a picture, even when on a try pod, the force used to push the button moves the camera while it is snapping a photo. Your higher end cameras can probably shoot pictures and process the image much faster without having to worry about movement. My camera however seems a little slow processing the image and is sensitive to movement.
My camera will work best for objects that are further away but has a hard time with close-ups.
Yes, that would certainly help. Trouble is, the tripods I have are BIG, and the little digital camera (Nikon 880) is simply not heavy enough to properly set up the tripod. Most of my close-up photography has been shots of milling parts on my CNC’d Sherline mill. Hard to get close!
You lighting is also quite good. That’s hard to do on shiny metal parts! It would be great to see more views of your 'bot!
Thanks! My tripod can get as low as 2’ but it’s still high which is why all my photos are so steep looking. I can take more photos for sure! Any particular angles you would like to see or any close-ups of a particular area of my brat? Let me know.
The head-on shots make the brat look a little long and skinny because of my bot heads high center of gravity. I have a great design for arms which will make the brat look a little more buff and proportional.
What are you doing for software? I’ve been studying the code available for hexapods, but what is available for bipeds?
The “gaits” I’ve seen for bipeds just don’t look right. I know it’s hard because they are not dynamically stable.
I know, what you need is a short table (end table?) to get the 'bot up a little more! I have an umbrella flash that I’d like to use, but it’s difficult to trigger properly with a small digital camera.
Sorry for the delay, I was at my wife’s parents house for Thanksgiving.
For software I am going to use basic micro’s Mbasic and eventually Pbasic using the BS2px. The gaits for the brat may not seem right because it only uses 6 servos so there is not as many degrees of freedom and like you mention, they are not as stable so a static gait may look a little strange.
Yeah, I’m not meaning to criticize anything about the bipeds, it 's just that the hexapods can move so realistically for reasons we’ve discussed. I want something similar. The tetrapod might be another candidate, not as easy for similar reasons, but still probably easier then a true biped gait.
I just realized that the 2DOF 'bots appear to get by with smaller servos! As I have a bunch of Futaba 3004 servos, I just might pursue a mini hexapod. I have some ideas for legs. I’d be interested in developing a gait engine, although the SSC32 can do one. Might be just perfect for my nephew.
Hay, no problem! We just got back from Thanksgiving at my son’s wife’s family. And tomorrow all of my family are coming over for “Fall Birthdays”.
Well here are some “head on” shots of the brat. The images are not quite as good as the fist batch posted and it had something to do with the backgraound causing the exposure to change.
What I did was turn off the flash and set the camera in manual mode and adjusted the exposure time to a slower shutter speed to alow ambient light to have time to give a good picture which is why the image looks a little yellow. I took this picture in the kitchen on the island using only the overhead kitchen flood lights.
As most know by now, I model all of my robots in 3D before I even order parts, and start to actually build them. I am modeling the BRAT now, and you can see the left leg (3D PDF). All joints are flexible. I need to create the right leg and the rest of the body now.
I still need a wall adaptor for power before I can make it walk. Right now I have nothing suitable for power that is safe to use. I thought that I would be able to use my selectable power adaptor but it does not supply enough current, and it is not regulated and I dont want to risk trying to use it.
If I could program sequences like you can I would be very happy.