Society of Robots - Robot Forum

Electronics => Electronics => Topic started by: superchiku on March 11, 2008, 12:47:02 PM

Title: power supply for atmega16
Post by: superchiku on March 11, 2008, 12:47:02 PM

now i want ask a question

my atmega16's power rationg is 4.5-5.5 v suppose i give 4 v as vcc rhen will the atmega16 behave oddly iam asking this coz my pwm is behaving oddly one side is giving 3.5 v and other is giving 3.7 and yes both have same prescalers and same value what is the problem???

another question too i want to know possible battery types i can give to atmega16 mcu?????

Title: Re: power supply for atmega16
Post by: HDL_CinC_Dragon on March 11, 2008, 01:02:57 PM

Your most likely browning out your MCU which means it has enough power to power up but not function properly. it needs a MINIMUM of 4.5v to function properly.
I would go with NiMH (Nickel Metal-Hydride) battery packs

Title: Re: power supply for atmega16
Post by: superchiku on March 11, 2008, 01:17:03 PM

nimh batteries are good but i need 5 of these batteries to get atleast 5v also how do u charge these battery packs and where they may be available

Title: Re: power supply for atmega16
Post by: ed1380 on March 11, 2008, 02:31:03 PM

http://www.all-battery.com/

Title: Re: power supply for atmega16
Post by: superchiku on March 11, 2008, 02:32:57 PM

ur specifying a site in usa i need a place coz i dont live in usa

Title: Re: power supply for atmega16
Post by: ed1380 on March 11, 2008, 02:40:53 PM

ok. where do you live? I'm sure they'll ship overseas

Title: Re: power supply for atmega16
Post by: superchiku on March 11, 2008, 02:50:55 PM

ya that they can plus i have to buy the charger +shipping will be more than 100$ thats way too much spend for a battery can u tell me how i make my own pack and recharge them

Title: Re: power supply for atmega16
Post by: superchiku on March 11, 2008, 02:59:07 PM

ok plzz tell me the local things available are NiCd batteries can i hook up 5 to make a battery pack if yes then how do i charge all of them
???

Title: Re: power supply for atmega16
Post by: Admin on March 15, 2008, 06:09:52 PM

http://www.societyofrobots.com/robot_parts_list_battery.shtml

Get a battery charger, or use a power supply such as in the $50 Robot tutorial.

Title: Re: power supply for atmega16
Post by: superchiku on March 16, 2008, 01:09:36 AM

ya right ill do that