That's a big, heavy battery. Of course your power requirements will be determined by length of service, overall weight, what exactly it does and many other factors... but unless the robot needs to go a very long time between charges I think the motorcycle battery is probably overkill. Especially if the robot is mobile, requiring it to move that big heavy battery around.
You may already have a platform in the works, but another possibility is 6V SLA batteries.They will likely run a 9V motor ok too. You can find SLA batteries of many sizes, and can pick the best size,http://www.jameco.com/webapp/wcs/stores/servlet/StoreCatalogDrillDownView?langId=-1&storeId=10001&catalogId=10001&categoryName=cat_47&subCategoryName=Rechargeable&category=4715BTW, I have an Omnibot 5402 that uses the 6V, 4.5 AmpHr SLA, and runs for a long time,http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_264014_-1http://www.ebay.com/sch/sis.html?_nkw=VINTAGE+TOMY+OMNIBOT+TOY+ROBOT+5402[beware the $1250 and $900 auctions! I got mine for < $20]I've also run the Omnibot off a set of 6 NiMH AA Cells, which go 2500 mA-hr these days, and that works good too.
The Omnibots come with a little 6V wallwart to recharge the battery. SLA requires nothingspecial, unlike Nicad, NiMH, and Lithium.Larger Amp-Hr batteries won't harm your electronics, as the Arduinos only draw as much current as they need. But powering an Arduino from 12V will often cause the tiny surface-mount 5V regulator to overheat. For robots larger than tiny, I favor using different sets of batteries for motors and electronics, then the motor electrical noise doesn't get onto the processor board as easily. I always use NiMH AA-cells for the electronics, no matter what I use for the motors.
If you look at the Jameco link, it will show you the weights for the different 6V and 12V batteries. Your running time will depend on size and weight of the robot, the battery capacity, and how much you run the motors, so it's a little difficult to knowall this ahead of time. The Omnibot will easily run for a couple of hours on the 4.5 Amp-Hr battery.
http://www.ebay.com/sch/sis.html?_nkw=VINTAGE+TOMY+OMNIBOT+TOY+ROBOT+5402[beware the $1250 and $900 auctions! I got mine for < $20]
since i have 12v motorcycle battery charger then i think its more efficient buying 12v battery , so that i will no longer buy sla 6v battery charger.
if i can charge sla 6v battery by my 12v motorcycle battery charger, then i will go for 6v..
o by the way, im here in the philippines, i will try to find sla 6v battery charger and 6v sla battery tomorrow so that i can plug it directly not regulating the volts anymore... thank you so much.
Quote from: oric_dan(333) on Jan 16, 2013, 01:29 amhttp://www.ebay.com/sch/sis.html?_nkw=VINTAGE+TOMY+OMNIBOT+TOY+ROBOT+5402[beware the $1250 and $900 auctions! I got mine for < $20]I'm pretty sure those auctions are for the Omnibot in "prime" condition (with box, manual, all parts, little/no fading or yellowing of plastic, and most importantly - the cardboard "home" base); for all of that, those are actually reasonable prices - the Omnibot -is- a collectible Tomy product, and an antique toy (technically). Do some research on such toys; you'll be amazed.I personally own the three major "Omnibots" (One Verbot, Two Omnibots, and an Omnibot 2000 - I also have a Chatbot), plus an actual Tomy Armatron (and several of the Radio Shack ones); I also have a Heathkit Hero Jr. They are all my "collector" bots; they don't get played with. None are in perfect shape or have everything they came with originally, but they all work.I once had this idea of collecting all of the 1980s era Tomy robots, but then I found out that there were a ton out there, many only sold in Japan originally. Many of those are near impossible to find at any price; there are some really rare ones out there that are hella expensive when you can find them on the collectors market (one is called "Hootbot" - it's an owl; if you can find it with the stand/perch and the manual - let's just say it ain't cheap, last time I looked several years back). I once saw an auction on Ebay (5 or more years ago) for a special Tomy robot that was given out to executives for some Tomy aniversary; it was programmable, and was fairly small - it's base was about the size of a quarter, and stood only an inch or so tall. You programmed it with this small pocket-sized computer; it had some IR sensors or something. Anyhow, it was silver plated, and I can't remember what this robot went for, but it was in the thousands of dollars by the end of the auction. Since it was an executive board giveaway schwag item from Tomy, there were only like 20 or so made, and who knows how many still exist.I also collect other Tomy toys of the era - I have a few Atomic Pinballs (one of the greatest tabletop toy pinball machines ever made, IMHO), as well as an Air Jammer car...
Yeah, the first thing I do is gut the electronics from the toys, and use the frames and motors only, so 'collectible' doesn't mean much. Omnibot 5402 has really nice motors. Another nice base is the R.A.D. 2.0. With that, I completely tossed the upper body, and kept the lower base only. The base is only about 4" high and has a 2-speed transmission. R.A.D. uses an old specially-designed 6V NiCad that's probably not available anymore, but could be used with any 6V SLA. http://www.ebay.com/sch/i.html?_trksid=p4069.m570.l1313&_nkw=R.A.D.+robotBTW, check out this site to find your old vintage bots,http://www.theoldrobots.com/http://www.theoldrobots.com/index2.html
is there some kind of old commercial robot that uses 12v motorcycle battery? from the picture in you link. what do they use to power them up?btw. do old robots have better motors?.