the is currently a world
the is currently a world wide shortage of the 328 apparently, my order to farnell for some should be fulfilled somewhen next year according to the last update they sent me XD .
the 168 is pin compatible and avaliable, but has less flash memory. You could re design the circuit to use a 644 or 1280 and have some extra pins.
yup looks like digikey has
yup looks like digikey has some 168’s, that would be the next best thing for this application.
xtal?
Not to divulge any trade secrets or anything, but what oscillator did you use for the arduino circuit? I assume it’s at 8MHz, with that tiny battery, but I’m trying to source a part#…
Thanks!
**16MHz **
16MHz
Now I’m even more confused.
Now I’m even more confused. I thought a single-cell LiPo could only provide 3.7V, not enough to run the AtMega at the full 16MHz? Am I off-base here? Did you stick a step-up converter on there somewhere or something?
no step up, works fine with
no step up, works fine with out it.
when fully charged lipo
when fully charged lipo batteries tend to have 10% of more voltage than specified. in this case, it would increase to a 4.1
Wicked!
Wicked!
Pin functions
I was looking for documentation about the Motor Driver 1A Dual TB6612FNG but the pin functions were written in Japanese! Can you please tell me what are the functions of each pin? Thank you very much!!! And that is an awesome sumo bot.
-This is my first ever comment!
Yeah that’s precisely what I
Yeah that’s precisely what I don’t understand xD
**Great project you have here! **
Great project you have here!
I want to some similiar to this, but using all the atmega’s I/O pins.
I’ve downloaded you eagle files yesterday and I’ve been playing with them. This is how it is looking like for now:
By the way, is this the atmega you've used? http://uk.farnell.com/atmel/atmega328p-au/mcu-8bit-avr-32k-flash-32tqfp/dp/1715486
Cool, cant wait to see what
Cool, cant wait to see what you come up with.
Yup that is the IC I used.
It shouldn’t get smaller
It shouldn’t get smaller than this, I placed the crystal, the resistor and the capacitors under the atmega:
(18.5x20.5 mm)
Nice job! I guess the LEDs
Nice job! I guess the LEDs would help with debugging, but I never really use them.
Wicked!
Hey, that was my line. Wicked!
I’ve bought some resonators
I’ve bought some resonators that aren’t fitting well on the pads of the board.
Do you still have a link or the refrence from the ones you used?
Thank you!
I’ll order some this weekend hopefully 
I don’t ordinarily comment but I gotta state thank you for the post on this perfect one :D.
The Nano Soma
