### Author Topic: Which controller and capacitor confusion  (Read 529 times)

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#### Shane

• Beginner
• Posts: 2
##### Which controller and capacitor confusion
« on: November 26, 2010, 07:02:40 AM »
Hi. As you have rightly guessed, I'm a complete newbie. The \$50 robot is exactly what I'm looking for to start me off into a world of electronics, programming  and robot building.
Soooo, I'm looking for a ATmega8 but I'm not having much luck finding one at a reasonable price. I have found this ATMEGA168V-10PU or ATMEGA168-20PU. Is this suitable for me to build the \$50 robot. I have tried looking at the datasheets to compare, but to be honest I have no idea which elements I'm supposed to be comparing.
Also in the parts list there is a .1uf ceramic capacitor. As I'm from the UK I am using the British parts list.
http://www.societyofrobots.com/step_by_step_robot_british_parts.shtml
In the description of the part it says 100pf.
Using this calculator http://www.translatorscafe.com/cafe/units-converter/electrostatic-capacitance/calculator/nanofarad-%5BnF%5D-to-farad-%5BF%5D/ that says that 0.1uf is equal to 0.0001pf. Is this a typo and should be 100nf?
Also, Is there a list of servos that can be modified to work as well as the HS311? If not what sould I look for when buying a servo other that a HS311?
Thanks
« Last Edit: November 26, 2010, 07:10:19 AM by Shane »

#### waltr

• Supreme Robot
• Posts: 1,944
##### Re: Which controller and capacitor confusion
« Reply #1 on: November 26, 2010, 08:30:19 AM »
That calculator say a .1uF (microF) is 100000pF or 100nF which is correct.

#### Shane

• Beginner
• Posts: 2
##### Re: Which controller and capacitor confusion
« Reply #2 on: November 26, 2010, 08:57:09 AM »
Okay cool. So the capicitor I need is 100nf, not 100pf as listed in the British parts list?