On the robotics side of things I was working on some performance optimization of the GUI code on my Eddie robot platform. That and seeing how possible it would be to get Eddie to be able to deploy a Boe-Bot. Also, working on getting the robotics club local to us acquainted with Parallax bots (They currently use Vex and want to move on to something more 'real-world' style).
I was able to 3D print a few things last night ... A couple of different sized bobbins for an RFID project (White), Parabolic Sound Triangulation (PST) project (Green), Electret microphone holders for PST project (Black) <-- Thinking on re-printing the MIC clips so that two or four MIC's can be used differentially on the same Parabola. Right now Proof of concept will use just one to determine the amount of gain the parabola contributes.
I was able to 3D print a few things last night ... A couple of different sized bobbins for an RFID project (White), Parabolic Sound Triangulation (PST) project (Green), Electret microphone holders for PST project (Black) <-- Thinking on re-printing the MIC clips so that two or four MIC's can be used differentially on the same Parabola. Right now Proof of concept will use just one to determine the amount of gain the parabola contributes.
Hey Beau,
This page may give you some good ideas for sound triangulation!
Nothing like learning from the past. I know they used something similar in WWII to help position Anti-aircraft searchlights but that page above has all sorts of others as well.
In particular someone out to use these in a movie somehow:
Didn't someone make a nice clear acrylic reflector for the PING to increase its range and make it more directional? IIRC it was pricey, but that would be a nice thing to 3D print.
RobotWorkshop, thanks... already saw that link ... funny.
erco, I think it was more of an acrylic parabolic ribbon or trough. Ultimately what I would like to do is re-print the MIC holders so that it would hold 4 of them on each parabola dish and differentially compare opposite microphones. That way common mode noise would drop out, and the signal to noise ratio should be really high and be able to pinpoint sound position within each parabolic field to a reasonable accuracy.
Hmm - Columbia River Gorge just west of Hood River, looking east?
Ken Gracey <= holy robots, I just made my 5,000th post on our forums
Yay - five stars for you!
But no, it is looking west over Riffe lake 19 miles due north of Mt St helens. The site is called Dog Mt, and has been flown by hang gliders since the 70s.
I made rubber band gun kits for my HS robotics students' latest ActivityBot project, "Search 'n' Destroy."
It uses a scanning Ping))) to locate the cardboard targets and the 12-shot repeating rubber band gun to take them out. The ultimate goal is an autonomous program that does it all. But the intermediate goal is to teach them to think algorithmically by letting them find and shoot the targets "blind" via an XBee link (i.e. scan 160 degrees for a list of distances, locate the center of the the first target, turn the bot to face it, move to the optimum firing distance, fire, then make sure the target has fallen, etc.). IOW, they will not be allowed to watch their robots, except through the XBee data link, forcing them to deal with the sensor data only. From there, they can modify their programs to do the actual decision making.
Tried to get in on a group build of Cerberus delta printers.
Worked on I2C drivers for GY-80 IMU.
Tried to move a pile of super accurate very expensive long range distance sensors.
Proof read a bunch of documentation for a lady writing a book on fractals. (I assume she's a lady, she's not my wife)
Didn't actually touch any of the robots, unless we count tripping over the ones in front of my workbench (placed there so I don't forget to work on them for national robotics week).
I worked with an Egg-bot and I painted some eggs using SVG files from thingiverse.com
And of course I started the Hacking of the eggbot
The interesting thing is that trying to empty the eggs I made a new device: An egg-blower! borrowing some electric parts from the Artist painting mechanism.....
All the stuff is still in experimental stage....
P.s All the eggs were from my parent's farm. I kept the inside of the eggs and I ate a lot of omelets!
Wow, a lot of amazing individual efforts here, kudos to you guys. Especially Nikos, who's not even in the USA for "National" (USA) Robotics Week!
Curiously, nobody so far mentioned participated in an "officially sanctioned" NRW event. I still say the low participation is due to a poor choice of a week, constantly colliding with Tax day (April 15) and occasionally spring break and Easter. If this country wants to get robotics in high gear, they need to reschedule. Some lady at iRobot who sits on the board for NRW and does the coordination vigorously defends the current schedule for some reason.
Comments
I spent some time updating and adding more content to my new robot website:
http://www.robotworkshop.com/robotweb/
Also pulled out some unfinished robot projects to try and get them wrapped up and documented.
Robert
@Robert - Amazing website!
I was able to 3D print a few things last night ... A couple of different sized bobbins for an RFID project (White), Parabolic Sound Triangulation (PST) project (Green), Electret microphone holders for PST project (Black) <-- Thinking on re-printing the MIC clips so that two or four MIC's can be used differentially on the same Parabola. Right now Proof of concept will use just one to determine the amount of gain the parabola contributes.
Hey Beau,
This page may give you some good ideas for sound triangulation!
http://www.douglas-self.com/MUSEUM/COMMS/ear/ear.htm
Nothing like learning from the past. I know they used something similar in WWII to help position Anti-aircraft searchlights but that page above has all sorts of others as well.
In particular someone out to use these in a movie somehow:
http://www.douglas-self.com/MUSEUM/COMMS/ear/German%201917a.jpg
http://www.douglas-self.com/MUSEUM/COMMS/ear/personal%20parabolic.jpg
Robert
erco, I think it was more of an acrylic parabolic ribbon or trough. Ultimately what I would like to do is re-print the MIC holders so that it would hold 4 of them on each parabola dish and differentially compare opposite microphones. That way common mode noise would drop out, and the signal to noise ratio should be really high and be able to pinpoint sound position within each parabolic field to a reasonable accuracy.
[IMG]http://modelstation.smugmug.com/Hang-Gliding/Dog-Mt-April-12-2014/i-GBfNrTZ/0/M/Dog 01-M.jpg[/IMG]
Hmm - Columbia River Gorge just west of Hood River, looking east?
Ken Gracey <= holy robots, I just made my 5,000th post on our forums
Yay - five stars for you!
But no, it is looking west over Riffe lake 19 miles due north of Mt St helens. The site is called Dog Mt, and has been flown by hang gliders since the 70s.
It uses a scanning Ping))) to locate the cardboard targets and the 12-shot repeating rubber band gun to take them out. The ultimate goal is an autonomous program that does it all. But the intermediate goal is to teach them to think algorithmically by letting them find and shoot the targets "blind" via an XBee link (i.e. scan 160 degrees for a list of distances, locate the center of the the first target, turn the bot to face it, move to the optimum firing distance, fire, then make sure the target has fallen, etc.). IOW, they will not be allowed to watch their robots, except through the XBee data link, forcing them to deal with the sensor data only. From there, they can modify their programs to do the actual decision making.
-Phil
Worked on I2C drivers for GY-80 IMU.
Tried to move a pile of super accurate very expensive long range distance sensors.
Proof read a bunch of documentation for a lady writing a book on fractals. (I assume she's a lady, she's not my wife)
Didn't actually touch any of the robots, unless we count tripping over the ones in front of my workbench (placed there so I don't forget to work on them for national robotics week).
And of course I started the Hacking of the eggbot
The interesting thing is that trying to empty the eggs I made a new device: An egg-blower! borrowing some electric parts from the Artist painting mechanism.....
All the stuff is still in experimental stage....
P.s All the eggs were from my parent's farm. I kept the inside of the eggs and I ate a lot of omelets!
Curiously, nobody so far mentioned participated in an "officially sanctioned" NRW event. I still say the low participation is due to a poor choice of a week, constantly colliding with Tax day (April 15) and occasionally spring break and Easter. If this country wants to get robotics in high gear, they need to reschedule. Some lady at iRobot who sits on the board for NRW and does the coordination vigorously defends the current schedule for some reason.