- Memcached Map
Instead of building the map server as a player server plugin, I am now using memcached as my distributed map server. Memcached allowed much faster access of map tiles. I also implemented tile lock so that multiple player plugins can update the same portion of the map at the same time. Probability mapping, red means [...]
- AMOS Mapping
Some recent work on AMOS mapping that I’d like to share: Variance mapping outdoor Elevation mapping indoor Elevation mapping indoor Variance mapping indoor Visual mapping indoor Right now, the mapping is done as a series of player plugins. But the problem with player is its slowness in transmitting map tiles. So future release will use [...]
- Player/Stage
I recently have been working on the AMOS III robot again. AMOS III was built last year to compete in IGVC. I did not participate in last year’s IGVC because I had to do an internship at IBM. And from what I’ve heard, hardware aspects of the robot was in great shape, but software was [...]
- Almost Christmas
It is almost Christmas again. My flight back home is going to be on the 21st, 6am in the morning, 14,000 mileage back and forth. Amos III is wired up with computer, GPS, and phidget. I droved it using joystick remotely through wireless network. Amos III already put a bunch of holes on the walls, [...]
- Amos III is Alive!
Today, Amos III has been wired up and tested successfully. The pneumatic casters arrived this morning during the Freescale Rochester Technology Symposium. Stew welded the support for the casters then touched up the frame and welded the motor mounts. In the evening, motors, tires and casters are all mounted, as well as the base level [...]
- Amos III Progress
As I said in the previous post, Stewart and I have been rebuilding Amos. The welding job for the frame is somewhat completed as of today. I also spent some fun/boring hours in the formula machine shop. The motor mount can be welded tomorrow, which is also about the same time when the pneumatic casters [...]
- Rebuilding Amos
Surprisingly, Amos was probably the best working robot that MDRC has ever made in the history. It has gone through two versions already, Amos and Amos II. Last week, we finally took Amos II apart in order to build Amos III. The robot in the picture is the first version of Amos. It was built [...]
