Tag: dprg
Art, Cars, Cows, and Robots
June 15th, 2006, No Comments
As I stepped out of the Deep Ellum Subway where I ate lunch today, I saw a wondrously strange vehicle drive past. It was a Chrysler covertible covered in bovine-themed mosaic tile, with a giant, longhorn and barbed wire hood ornament thing, and driven by a beautiful girl. We briefly made eye contact as she [...]
Storms, Crustaceans, and PQFP Chips
March 8th, 2006, No Comments
There’s a major thunderstorm passing overhead right now. The noise from the rain hitting the roof of our building sounds like loud applause. Ten minutes ago it was warm and dry outside but that’s Texas weather for you. I’m working late again tonight and I’ve been nervously watching the lightning strikes all around the area [...]
Robonexus 2005 Debriefing
October 16th, 2005, No Comments
I’m finally getting caught up on things since returning from Robonexus and one of the last things on my ToDo list is posting something here about the trip. Before I get to that, I should mention that Susan and I went to the State Fair of Texas this year just prior to my Robonexus trip. [...]
Robonexus, Here I Come
October 5th, 2005, No Comments
I’ll be leaving for Robonexus in San Jose Thursday morning. I’ll be out there until Sunday. I plan to have fun, take lots of photos, cover the show for robots.net and maybe do some coverage for Servo magazine as well. In addition to myself, Roger Arrick of robots.net and Arrick Robotics will be going as [...]
Random News from the Month of May
May 30th, 2005, No Comments
Yesterday Susan and I braved the scattered rain to attend Dallas Artfest 2005. It turned out to be overcast and cool but only a tiny bit of rain fell. Susan found some interesting jewellery and it made a nice break from work. I’ve been working with David Anderson in porting his robotics library for the [...]
Robots, robots, robots
October 4th, 2004, No Comments
Between the recent office move and keeping up with herds of cats, I’ve fallen a bit behind in reporting news in other areas. Work is still progressing on the Ultracap power supply. After some further testing of the cell-balancer circuit based on the TI TLV4112IP high-output-drive op-amp, I decided that, while working flawlessly otherwise, it [...]
Cats, Caps, and Contests
July 17th, 2004, No Comments
Ultracap Update After prototyping a cell-balancing circuit for my robot power supply based on Maxwell 350F Ultracaps, I discovered the original choice of the TI TLC25L4CN low-voltage op-amp was not a good one. The little chip just couldn’t deliver enough current to balance the cap voltages in any reasonable amount of time. The peak output [...]
DPRG and Robot News
June 23rd, 2004, No Comments
At the DPRG RBNO last night, I worked out the basic design for my robot power supply with the help of a few other DPRG folks. The plan is to use 4 of the Maxwell 350F caps to store power from solar cells. (Someone was asking about the cost – the single unit price of [...]
