Total cost?

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mcscruff
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Total cost?

Post by mcscruff » Tue Jul 26, 2016 10:55 pm

I will start by admiting i know nothing.
But i will learn.

Im looking to make my first robot as cheap as possible. Looking at the parts (excluding shell) what is the most expensive part? It looks like the transmitter and receiver?

It wont be a super quick build but other than reading here where is the best place to start? Taking an rc car apart or just start from scratch?

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joey_picus
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Re: Total cost?

Post by joey_picus » Tue Jul 26, 2016 11:20 pm

When you know nothing, the only way is up :) welcome to the world of antweights!

Taking an R/C car apart is of limited use, unless you really do have no prior knowledge of r/c systems at all - it's unlikely any of the parts will be transferable to 150g, assuming (from the forum you've posted in!) that's the class you're aiming for. There are a number of kits available to help you get started; the kit sold on this very site gives you literally everything you need for a working robot including transmitter, while Rory Mangles of Nuts off the telly fame and these forums sells a basic kit including motors, wheels and an electronics module for considerably cheaper but without the transmitter, a battery or charger, or extra materials. I can vouch for the quality of both :)

Reading through the forums is a good start, and to answer the question about cost, most of my ants have cost between £50 and £200 to build (I promise I am working on a big website update) but it tends to vary a lot as most components will be reusable between robots, damage allowing. Hopefully this helps - I've got a bad cold so some of this may not make sense...
Joey McConnell-Farber - Team Picus Telerobotics - http://picus.org.uk/ - @joey_picus
"These dreams go on when I close my eyes...every second of the night, I live another life"

tdufall
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Re: Total cost?

Post by tdufall » Sat Jul 30, 2016 5:42 pm

When you said you were working on an update I wasn't expecting that old a style!

mcscruff
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Re: Total cost?

Post by mcscruff » Fri Aug 26, 2016 8:26 am

Update:

I emailed the shop owner on here to buy a kit (waiting for a reply) , and i have a few designs, time now to learn to use blender to put them into 3d and not sketches on paper.

As soon as i get my order i will start a build diary.

oxhey
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Re: Total cost?

Post by oxhey » Fri Aug 26, 2016 8:47 am

Can i suggest using Sketchup instead of blender. Its easier to use. :D
ProtoBot - http://robotwars101.org/forum/viewtopic.php?f=1&t=2471

SUSPENDED! - I dont have the time/money to fully commit and I may have killed a motor and my NanoTwo :o !

I may give this another go at some point, but for now its over.

mcscruff
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Re: Total cost?

Post by mcscruff » Fri Aug 26, 2016 10:09 am

Thanks for the tip, i will look into it, the only reason i picked blender was because it can run on Linux, but i will give this one a go on my windows pc

Skillz
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Re: Total cost?

Post by Skillz » Fri Aug 26, 2016 11:07 am

Have a look on YouTube for videos there are a small fee of guys building robots as well as many duals of antweight robots for inspiration
Team Shinobi

mcscruff
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Re: Total cost?

Post by mcscruff » Tue Aug 30, 2016 3:13 pm

I looked at the kit and wikk get one when i mess up my 1st go... But i want to try from scratch. All pointers and bits im missing would appriciated:

Transmitter and reciever
http://www.hobbyking.co.uk/hobbyking/st ... de_1_.html

50:1 motors
http://www.hobbyking.co.uk/hobbyking/st ... arbox.html

Wheels
http://www.hobbyking.co.uk/hobbyking/st ... _bag_.html

Servo
http://www.hobbyking.co.uk/hobbyking/st ... ervo_.html

Battery and charger
No idea

Would these bits all work together?

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peterwaller
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Re: Total cost?

Post by peterwaller » Tue Aug 30, 2016 4:08 pm

You really need to start with the controller.
If you go for Rory's option you get the controller, receiver, motors wheels and tyres which are tried and tested and have won many of the recent AWS's for £40 +£2 P&P.
To work with that the transmitter needs to be DSM2 which that one is not and also if you want to drive single stick as most do the transmitter needs to be Mode 2 not 1.
If you don't want to go with Rory's then you need a controller, a receiver, a compatible transmitter, motor gearboxes, wheels/tyres and a battery plus charger.
The wheels you have selected are unlikely to fit the gearboxes and being aircraft tyres they are probably to hard and the rounded section means little or no grip.
The servo is too small with very little power and plastic gears so will not be up to a lifter if that is what you are considering.
The motor gearbox is probably OK.
To be brutally honest if you are new to Antweights why risk buying the wrong parts when Rory the reigning AWS champion has done the hard work for you.
You still need to design a robot but at least the parts are all up to scratch.

Skillz
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Re: Total cost?

Post by Skillz » Tue Aug 30, 2016 4:51 pm

I understand the above point but I also get the logic of mcscruff as buying a kit all in one it's hard to learn when something is already assembled for you
Team Shinobi

mcscruff
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Re: Total cost?

Post by mcscruff » Tue Aug 30, 2016 4:54 pm

I bought a kit from here..

I really need to learn more

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peterwaller
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Re: Total cost?

Post by peterwaller » Tue Aug 30, 2016 7:21 pm

I am all for learning how things work I even scratch build my own controllers but you need to start somewhere.
When you say you have bought a kit I assumed you meant a complete robot kit like the Shockbots one.
OK Rory has already connected the receiver to the controller and the controller to the motors but that is a small part of designing a working robot.
The problem is at the moment there are few controllers available that I have seen working in antweights and really his is the only one I would recommend.

mcscruff
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Re: Total cost?

Post by mcscruff » Wed Aug 31, 2016 11:48 am

I bought the kit from this sites antshop.

Watch this space

hobojoe
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Re: Total cost?

Post by hobojoe » Sat Sep 03, 2016 9:50 am

Hey guys, without wanting to make a new thread for the same discussion I thought I would ask here.
You say going for one of the kits is the best way to start, but for me that isn't nessisaraly the case.

I have a transmitter (I fly racing drones) but it is not spektrum. I know I can buy the JT Module, but I would prefer not to. So in my case the kits don't work. The only component I don't get is the motor driver, brushless motors and ESC's are common place in racing drones, but geared brushed motors are new to me.

Motors I get, so I would look at something like this
https://www.pololu.com/product/3063

But would these be the right sorts of drivers for this or am I looking at the wrong thing here:
https://www.pololu.com/product/2130
https://www.pololu.com/product/713

As long as I am on the right track I can figure it all out. I have spare receivers ect lying around just wanting to make sure that the drivers are the right thing.

Thanks Chris

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Rhys
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Re: Total cost?

Post by Rhys » Sat Sep 03, 2016 10:41 am

Motors are fine, but a bit pricey, just get some copies from ebay.

And as far as I'm aware neither of those controllers are suitable. I use these https://www.pololu.com/product/1220 but they aren't plug and play. You have to program them with your own code. I think you'd be better just buying a controller from Rory. Or if you're on a budget, just use servo boards.
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