Society of Robots - Robot Forum

Electronics => Electronics => Topic started by: morglum on October 25, 2010, 11:37:17 AM

Title: 50$ robot - will these parts do?
Post by: morglum on October 25, 2010, 11:37:17 AM

thanks!

1- Servo by PArallax]    900-00008-ND
2-  PDV-P5001Photocells:[/url]  8k ohm to  12k ohm (light) 300 k ohm  dark
3-  Resistor for photocell is  sqrt(12000 ohm * 300000ohm) = 60 000 ohm, correct?
4 )  I'm planning to get this roboduino (http://cgi.ebay.ca/Roboduino-Servo-Ready-Freeduino-Atmega168-/280536722940?pt=LH_DefaultDomain_0&hash=item41514aadfc (http://cgi.ebay.ca/Roboduino-Servo-Ready-Freeduino-Atmega168-/280536722940?pt=LH_DefaultDomain_0&hash=item41514aadfc))
  a) good idea?
  b) what connectors should I get to connect my photoresistors/servos/batteries to the robouino?  I looked at the "wire connector tutorial" .. should I get the 3-pin connectors from digikey (WM2801-ND 3 pin housing ) since most of roboduino's pins come in group of three?
 --- also would these jumper wire fit?? (http://cgi.ebay.ca/One-Pack-60PCS-Solderless-Bread-Board-Jumper-color-wire-/160441288042?pt=LH_DefaultDomain_2&hash=item255b0bc56a (http://cgi.ebay.ca/One-Pack-60PCS-Solderless-Bread-Board-Jumper-color-wire-/160441288042?pt=LH_DefaultDomain_2&hash=item255b0bc56a))

thanks

edited to make clearer --- please ignore next 6 posts..

thanks

Title: Re: 50$ robot - will these parts do?
Post by: Soeren on October 25, 2010, 12:50:05 PM

Hi,

Quote from: morglum on October 25, 2010, 11:37:17 AM

1- Servo by PArallax
2- Photocells: 4k ohm to 150 k ohm
3- 390 ohm resistor instead of 340
4- 1.5k ohm resistor instead of 1.62k ohm
5- arduino instead of ATmega8 AVR  and 28 pin DIP socket

Your links are dead.

Apart from item #4, which needs to be adapted to the specifik LDR (item #2) you should be OK, but you probably have to modify the program (or make a new one).

Title: Re: 50$ robot - will these parts do?
Post by: morglum on October 25, 2010, 01:44:45 PM

Hi,
Thanks for replying.

The links work here, but here they are again:

servo:
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&itemSeq=92229681&uq=634236058280301585 (http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&itemSeq=92229681&uq=634236058280301585)
SERVO CONTINUOUS ROTATION, Manufacturer Part Number   900-00008
 
photocells:
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&itemSeq=92234341&uq=634236068889371536 (http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&itemSeq=92234341&uq=634236068889371536)

cheers!

Title: Re: 50$ robot - will these parts do?
Post by: Soeren on October 25, 2010, 01:54:34 PM

Hi,

Yes, but I don't have the cookies you got from the session.

Title: Re: 50$ robot - will these parts do?
Post by: GearMotion on October 25, 2010, 04:41:34 PM

Quote from: morglum on October 25, 2010, 01:44:45 PM

Hi,
Thanks for replying.

The links work here, but here they are again:

servo:
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&itemSeq=92229681&uq=634236058280301585 (http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&itemSeq=92229681&uq=634236058280301585)
SERVO CONTINUOUS ROTATION, Manufacturer Part Number   900-00008
 
photocells:
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&itemSeq=92234341&uq=634236068889371536 (http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&itemSeq=92234341&uq=634236068889371536)

cheers!

Send the digikey part numbers. They all end in "-ND"

Title: Re: 50$ robot - will these parts do?
Post by: morglum on October 25, 2010, 05:32:48 PM

oops - sorry guys.

Servo
 900-00008-ND

photocell
PDV-P8101-ND

cheers

Title: Edited OP -- please refer to the OP
Post by: morglum on October 26, 2010, 11:53:18 AM

Please read the edited OP, and ignore all messages between the OP and this one, as they only show how much of a newbie I am :)