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This project has evolved some , the basic rundown is I'm modding two Omnibots , one a regular the other a larger 2000 model. I will have two ezb kits , rad base idea was thrown out because of so much noise but could go back on the table if the omnibot drivetrain is too weak to pull it.
By jstarne1
— Last update
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Looking great.....where did you get your voltage converters? Very neat work!
Nice layout.
Having a smoothie makes progress go smooootherI purchased 3 voltage converters for 30 dollars shipped. So they are cheaper and allow you to use a 12v battery and get a longer runtime. http://www.ebay.com/itm/150748060772?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
I reversed all the fans orientation and glued in the mount with epoxy. Now my cooling solution is finished. I.have the led holders in place but I have not descided what colors I'm going to use yet. All the LEDs I have at the moment are high output and that's big overkill for indicator lights.
Ok somthing I was waiting on ! Back to building. The additional three sr04 ping sensors came in from Hong Kong. With as much as they ship you would think they would make international imports more efficient. Anyways here they are...
I planned on facing one forward for radar , one for stair avoidance on the front bottom and the other two sensors use is not definitely descided yet but previous pictures I drew threw ideas out there.
That LCD front is awesome! I have a serial LCD laying around i could put on mine! thanks for the idea!
Do those voltage converters get very hot (waste energy to heat)?
I have a pair of 12v 17amp/hour batteries that are currently wired serial for 24v, which is what my wheelchair motors want. I also want to provide auxiliary power to the netbook the bot will be carrying (19v) and would like to also use the same batteries to provide 7.2 to the EZ-B and maybe 12 to some fans.
I figured I could pull the 12 by just connecting to one of the 2 batteries (will that work if they are wired in Serial -- pull 12v + and ground from between the batteries? Seems to look right on my meter, but it has been 30 years since I did any electrical work other than replacing a light switch or ceiling fan). If that works for the 12v, then another converter to go down to 7.5 (maybe from the other battery, so they discharge somewhat evenly)....
I am still looking for a charging solution too if anyone has any ideas to charge 1 24 or 2 12v high amperage batteries without taking all night but also without breaking the bank account....
Alan
What about something like this?
Charger
Thanks Bret. Price is right. It would take 4 hours to fully recharge. I'll have to come up with some kind of self plugging docking station so it can go patrol and get back to the charger on its own if the house alarm goes off while it is charging, but there have been a lot of ideas thrown around about how to do that, so I am sure I'll be able to figure it out.
Looks like this seller has a bunch of differnet chargers. I'll look through and make sure this is the most appropriate.
The previous one I had found (that would have had 2 hour charge time) was $90, and I would rather spend $30 on the charger and put the difference towards a 2x25 H-bridge. Once I have those items I can really start my big bot build.
Alan