Society of Robots - Robot Forum

General Misc => Misc => Topic started by: Sain on July 01, 2007, 10:21:34 PM

Title: My First Robot Idea (SoR Contest)
Post by: Sain on July 01, 2007, 10:21:34 PM

Alright, just got done in Sketch Up with my robot idea. Nothing too complex. Just a photovore that runs on a 9V. I plan to document everything so I can enter it in the SoR contest.

edit: forgot to add the file here it is.
(http://img103.imageshack.us/img103/2326/robottu6.jpg)



So today I went out to RadioShack today to buy all the parts then figured I could get 3x the parts for the same price. So I'm going to return the parts I bought today and just order everything online. Heres what I plan to order probably. Any suggestions on this to add. This is pretty much for a couple of photovores, and a $50 bot. Anyone have any suggestions on what else to add. I have absolutely nothing as far as components go. Just a bread board, wire, multimeter and a soldering iron.

Standard Motors - 4
Servos - 2

DPDT 5V Relay - 4
LM386 - Audio Op-Amp -2
Photoresistors - 5
Solarcells - 1
9V Battery Snap Connector - 1


4700?F Electrolytic Capacitor - 2
1000?F Electrolytic Capacitor - 4
220?F Electrolytic Capacitor - 2
.1uF Ceramic Capacitor - 10
Pack of Random Capacitors
Pack of Resistors

2N3904 NPN Transistor - 10
2N3906 NPN Transistor - 10

ATmega8 AVR - 1
28 pin DIP socket - 1
Breakaway Header - 2 packs
Grid-Style PC Board - 2


SPDT Toggle Switch -1
DPDT Toggle Switch - 1
SPDT Snap Lever Switch - 4

Also I'm thinking about picking up the following books, Junkbots, Bugbots, and Bots on Wheels or Robot Building for Beginners by David Cook. Which one do yall recommend, or does anyone know where I can download them?

Title: Re: My First Robot Idea (SoR Contest)
Post by: Del on July 02, 2007, 11:48:56 AM

Hi,

If you're more interested in making something like a photovore (or other BEAM robot),
the Junkbots book would be a better choice. It contains step-by-step instructions for
several BEAM-type robots.

There's a lot of BEAM stuff online. Here are some example links:

http://www.instructables.com/id/E6PN27M4CPEP286H58/?ALLSTEPS (http://www.instructables.com/id/E6PN27M4CPEP286H58/?ALLSTEPS)
http://www.streettech.com/robotbook/mousey.html (http://www.streettech.com/robotbook/mousey.html)
http://downloads.solarbotics.net/PDF/Solarbotics_Herbie_the_Mousebot_Instruction.pdf (http://downloads.solarbotics.net/PDF/Solarbotics_Herbie_the_Mousebot_Instruction.pdf)

Title: Re: My First Robot Idea (SoR Contest)
Post by: Brandon121233 on July 02, 2007, 03:15:29 PM

forget the relay and transistors, go with MOSFET's and before you order that stuff, you can get about half of it in free samples
get the Atmega168 instead of the Atmega8
if you want to fit the robot in an altoid can look at getting poico servos http://www.junun.org/MarkIII/Info.jsp?item=16 (http://www.junun.org/MarkIII/Info.jsp?item=16)

Title: Re: My First Robot Idea (SoR Contest)
Post by: sotu on July 05, 2007, 09:04:50 AM

why u need 4 motors and 2 servos if u only have 2 wheels? (3 with the scrolling wheel without drift power)

Title: Re: My First Robot Idea (SoR Contest)
Post by: Admin on July 11, 2007, 06:24:04 PM

I noticed you got solar cells and no batteries. I dont think the solarcells you will use can handle the motors without resetting the microcontroller during solar engine cap discharge . . .