dan
New Member
Posts: 22
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Post by dan on Jul 9, 2013 11:46:05 GMT
I tested it on an old battery but I ordered a 6 volt 5 cell 1600mah nimh reciever Battery where could I find a charger for this I can't find one anywhere
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Post by RC Tractor Guy on Jul 9, 2013 12:20:01 GMT
Well the 2.5 volt is probably related to the voltage of the battery you used and whether you had the esc set to output full power or not.
I don't know about chargers maybe search for the manufacturer of the battery you bought or search 6v nimh receiver battery chargers and look for one with connections like your battery.
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dan
New Member
Posts: 22
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Post by dan on Jul 11, 2013 1:11:27 GMT
How did you connect the motor drive shaft to the wheels
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Post by RC Tractor Guy on Jul 11, 2013 7:34:28 GMT
I ordered a longer hex axle then screwed the inside wheels to the hex wheel hubs that you get with the motor, pushed them onto the axle and left the outside two wheels free wheeling to try and make it easier to turn.
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dan
New Member
Posts: 22
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Post by dan on Jul 11, 2013 11:38:03 GMT
Where did you get that shaft I have mounted the motor now I just have to mount it to the wheels
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Post by RC Tractor Guy on Jul 11, 2013 12:30:20 GMT
It was tamiya 70105 and I got it on ebay I think. I mounted two wheels on the small axle that comes with the motor and played around with it like that until I received the longer axle so you could do the same
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dan
New Member
Posts: 22
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Post by dan on Jul 19, 2013 1:00:29 GMT
How to you end up steering the tractor once you put the servo on what did you connect it too
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Post by RC Tractor Guy on Jul 19, 2013 9:28:51 GMT
You want to add a second battery to make the tractor last longer right? If so, make sure the batteries are the same voltage then just connect the batteries in parallel and you will have the same voltage and the sum of the current ratings.
Yes using the control board from one of those metal gear servos should work.
Yes keep it simple just connect the ESC straight to the receiver, if that doesn't work then we'll try something else.
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Post by RC Tractor Guy on Jul 23, 2013 20:02:45 GMT
I think I replied to an old post there by accident, I put a small frame under the rear end of the tractor for the steering and just connected a bar across. I haven't finalised it yet but that temporary solution worked pretty good.
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Post by Bill on Aug 18, 2013 12:20:12 GMT
Hi, New guy here. What is an esc? What's it for and how to use it? Would you have a wiring diagram for the whole R/C setup?
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Post by RC Tractor Guy on Aug 19, 2013 8:54:10 GMT
Hi Bill and welcome to the forum. An ESC is an Electronic Speed Controller, it is basically a circuit with a H-bridge and a microcontroller. The microcontroller takes a servo signal from a receiver and uses it to control direction and pulse width in the H-bridge. This allows it to control the direction and speed of a motor. So you would use this to control a drive motor on your tractor.
I don't have a full circuit yet, I've been very busy the last few months and haven't been able to make much progress on the site. I'll try make one when I get a chance, sorry for the delays.
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Post by Bill on Aug 21, 2013 18:52:11 GMT
HI, Thanks for the answer. I was confused when you said you had never used one at the begining of this thread. I am also a beginner with the electronics building stuff and R/C vehicles.
In any case I like your site and hope to learn from it. As for a diagram, a full circuit diagram at this point would scare me. I was wondering if there was a way to start with a basic block diagram that you could build on as the thread progresses.
Thanks
Bill
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Post by RC Tractor Guy on Aug 22, 2013 9:07:55 GMT
Oh I'm a complete electronics nerd, I like to build circuits from scratch rather than use off the shelf modules like transmitters, receivers, ESCs. I'm just more satisfied with the results then, its just a personal preference. Most people would prefer to use these already made parts because it saves a huge amount of hardship in the long run for example using standard receivers means you don't need to do any programming but you are limited to the number of channels available on the receiver. Here is a simple block diagram of how you would do it with store bought R/C components rather than making your own. If you want the more complex version that I do using micro controllers and XBees let me know and I'll happily make it for you.
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Post by Bill on Sept 3, 2013 16:49:11 GMT
Hi,
Thanks for the diagram. Exactly what I was looking for. I would like the more complex version at some point but right now I am still working on beginners stuff. I have looked into and have some Picaxe beginners kits. I have a tractor coming and I have received a couple of the Tamiya motor gear boxes. I had a problem ordering a receiver and servo from HK. I am in the US and they can't ship on same invoice. I don't know why? Still working on that.
Bill
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Post by RC Tractor Guy on Sept 4, 2013 9:37:59 GMT
No problem, I'll try get a diagram when I can, it will be a bit more complex. I think the rc controller/receiver way is a good starting point unless you are already very confident with your picaxe. I tend to mount the motors in the tractor and test the tractor that way to start with. Do you already have the RC controller?
I taught of getting a picaxe before because I like using pic chips but went for an arduino instead to try the atmega chips.
That is strange about the invoice! Here you either choose from the limited European website or you order from I think it is a china based warehouse with pretty much everything in stock but then you have an expensive shipping bill and might have customs charges. Its rather annoying but I find it cheaper in the long run than shops here and so much more choice than shops here.
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