Help with microcontoller

[gb]

Hello,

I am using the $50 robot tutorial to build my first robot. I am not sure which microcontroller to buy for modifying the servos. I have purchased the AVR ISP2 Programmer and want to the microcontroller to be compatible with this software. It will be great if someone can tell me what exactly to buy (so I can avoid all the hassle for my first robot) and how to use the  hex file to modify my servos.

Thanks,
gb

[Conscripted]

Welcome to SOR!

The microcontroller for the 50 dollar robot is the ATMEGA8. You can get the digi-key part number from the tutorial.  The AVR ISP2 programmer will work for any of  the 8 bit AVR microcontrollers. To modify the servos you need to finish building the circuit. After it's built upload the hex file using the programmer. What the hex file does is basically tell all of the ports on the left side of the circuit (where you plug the servos in) to output a signal that will center a servo.

We would love to see some pics when you bot is done.

Conscripted

[wil.hamilton]

now, are you looking for just the chip? or an integrated microcontroller?  with just the chip you will had to do some soldering to build a carrier board for it.

[gb]

Thank you Conscripted. I will definitely paste some pictures once I am done.

wil.hamilton - I was not sure if I needed an integrated microcontroller. But it looks like the circuit for the $50 robot will help me to modify my servos..

Thank you guys!!

gb