Society of Robots - Robot Forum

Electronics => Electronics => Topic started by: Lazypete on December 17, 2007, 06:49:53 PM

Title: Microcontroler board question (50$ robot tutorial)
Post by: Lazypete on December 17, 2007, 06:49:53 PM

Im ready to build the controller board for the 50$ robot.
Unfortunately when I got to the part shop they didn't have
the exact resistance listed in the part list.

So the part list has 340 ohm and 1.62K ohm
Both of them were unavailable..
( So I got 330 ohm and 1.6K ohm both of them have a +- 5% tolerance)

So here is my question, do I need exactly those resistance values or
can I use resistance close to the mentioned values.

Thanx everyone!

Title: Re: Microcontroler board question (50$ robot tutorial)
Post by: ed1380 on December 17, 2007, 08:27:41 PM

thats good enough. the photoresistors arent equal either, so if you have more than 2 you might want to use the 2 closest ones

GL and dont cheap out on teh programmer cable

Title: Re: Microcontroler board question (50$ robot tutorial)
Post by: Lazypete on December 18, 2007, 09:51:13 AM

Thank you very much.

And, what do you mean about the programmer cable?
It came with the programmer, I brought the AVR ISP mark II from Amtel.
I dont think I went cheap lol

Title: Re: Microcontroler board question (50$ robot tutorial)
Post by: ankitk on December 03, 2008, 07:58:23 AM

dude thats fine i used a 395 resistance and a 1.8kohm .
Lol yet to test it keeping my fingers crossed.
Regards,
Ankit