So tonight I finally got back around to working on Uno V. Dos. The part I really wanted to get working was the multiplexer driver. The idea behind the multiplexer circuit is that the
Voice Changer
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I found a voice changer I will also be integrating into the robot. I will add switches to the outside of car later to control this board.
On The Road To Autonomy
The Arduino usb board will allow me all the all the space I need to add the photosensors and make a photovore. I will be adding photosensors to the front and back so it will follow or run away.
A Mini Sumo Kit begins to emerge
So, in order to support the change in meeting format I've begun working on my own extra low cost Mini-Sumo kit. It won't be a super-competitive kit, but it should be plenty educational and fun to build in a classroom/lab type scenario.
Meeting Format Change
Well folks it doesn't look like our Mini-Sumo contest is going to happen this month either. I think that we need to drop back a bit and change the format of our meetings. I'm thinking some combination of robotic theory and hands-on robot assembly in a more structured classroom style enviroment. The end result of the robot assembly part being a mini-sumo that folks can enter into our contest.
So I'm disappointed with another delay but I think that a more structured build strategy will ultimately bring more folks into the fold complete with working robots.
Reverse Engineering Board
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To reverse engineer the board I started with finding the steering motor functionality and working backwards to the board. Once that was accomplished, with club member’s help I was able to trace the motors back through a series of transistors made to work as an H bridge. Enabling me to find out how the chip works
Blunderifc
Well it seems I made another blunder quite some time ago and have only now just seen it. I finally got around to firing up Uno's sensor board for testing. The Transimpedance Amplifiers immediately got hot. After poking around a bit I discovered that the library component that I created for DipTrace has the pins in descending order.. on both side of the SOIC chip. Doh. I got lucky, two of the four pins are N/C on the bad side, but the output and the Vcc got swapped.
Regular Meeting Apr 18 (Updated)
04/18/2009 10:30
America/Chicago
Update: The 17th was a Friday. Corrected the day to be the normal Sat. Meeting
We were going to have our Mini-Sumo contest this month, but one of the three members that actually has a working Mini-Sumo will be out of town on that day. So, we will delay the contest until the May meeting.
