Author Topic: The road to an antweight (Read 13472 times)

Badger · « **on:** August 10, 2011, 08:25:49 AM »

Well, I'm making an antweight, and I thought that I'd make a thread to track my prograss and so someone can tell me when I'e gone horribly wrong.

I'm just getting the parts together, today 3 things came, the A3 sheet of lexan, the Battery and the slipper servo:

Still need:

2 drive servos (Need to order off haz!)
Transmitter+Reciever (Being shipped)
Battery Charger (Need to find one)
Lexan glue (Being shipped)
Wheels (Need to find!)

Vertigo · « **Reply #1 on:** August 10, 2011, 09:34:54 AM »

Use motors, not servo's for drive

Badger · « **Reply #2 on:** August 10, 2011, 10:27:58 AM »

What's the difference, after the servos been speedhacked and 360 rotation modded (Horrible choice of words, there)? I heard from somewhere that motors are harder to use and need extra tools ect.

R1885 · « **Reply #3 on:** August 10, 2011, 10:45:42 AM »

Servos are slow, you will be driven around in circles by faster robots.

Badger · « **Reply #4 on:** August 10, 2011, 10:47:41 AM »

OK. What motors do you recommend? Could I still use servos?

Vertigo · « **Reply #5 on:** August 10, 2011, 10:50:54 AM »

Use these motors:

http://www.robotbits.co.uk/motors-gearboxes/50-1-high-power-micro-motor-gearbox/prod_10.html

Badger · « **Reply #6 on:** August 10, 2011, 10:54:08 AM »

£13 for 1! I'm fine with slow servos, me, especially as I'm an inexperienced driver. I will probably swap them out when
A) I get the money
B) I get used to driving the damn thing

Skiitzzox220 · « **Reply #7 on:** August 10, 2011, 11:01:43 AM »

I think i'll keep track of this thread, might come in handy if I ever decide to build an antweight.

Jack Daniels · « **Reply #8 on:** August 10, 2011, 02:17:14 PM »

That battery looks tiny. 300Mah isn't much charge capacity. Why did you get that? On the bright side it looks like it has a standard Panasonic/At&t connector... so you could charge it in a phone I guess.

Also, I don't now a

of a lot about antweights... but can the electronics run off 3.6v? That seems odd to me.

Badger · « **Reply #9 on:** August 10, 2011, 02:25:47 PM »

Well, I was recommended 300mAh in this thread: https://gametechmods.com/forums/index.php/topic,7546.0.html

Jack Daniels · « **Reply #10 on:** August 10, 2011, 02:30:04 PM »

Interesting. I didn't think that a battery like that could power a bot for a decent amount of time. I suppose I have as much to learn as you do.

Badger · « **Reply #11 on:** August 10, 2011, 02:33:22 PM »

remember, it only powers 2 servo/motors for drive, and then the odd flip of the flipper, and the reciever. hopefully one of the more expeienced bot builders will shed light on it.

MikeNCR · « **Reply #12 on:** August 10, 2011, 02:37:57 PM »

To give a sense of power draw, my ant, Kobalos, ran 4 matches at the carolina event without needing a recharge on the 11.1v 250mAh pack with 22:1 silver sparks for drive and most matches going the limit.

This is the pack- http://www.robotmarketplace.com/products/LP-TP250-3SJPL2.html

SKBT · « **Reply #13 on:** August 10, 2011, 02:44:27 PM »

Quote from: Jack Daniels on August 10, 2011, 02:17:14 PM

That battery looks tiny. 300Mah isn't much charge capacity. Why did you get that? On the bright side it looks like it has a standard Panasonic/At&t connector... so you could charge it in a phone I guess.

Also, I don't now a of a lot about antweights... but can the electronics run off 3.6v? That seems odd to me.

Most RC airplane receivers will take a 3-9v input so he's a little on the low side if he has any current spikes that could be a problem.

300Mah is more than enough to run two tiny servos for three minutes. My 30lb flipper only uses ~900mah for 3 minutes of use.

Badger · « **Reply #14 on:** August 10, 2011, 03:17:32 PM »

So I'm fine with the battery I have? plus, with my driving and half the arena walls missing, matches won't last long.

And what is your opinion on the motors/speed/360 rotation hacked servos for drive?

Stagfish · « **Reply #15 on:** August 10, 2011, 03:31:39 PM »

SPeed hacked servos are not slow, the are insanely fast.

Jack Daniels · « **Reply #16 on:** August 10, 2011, 05:48:32 PM »

Thanks Mike and SKBT for your knowledge. I had no idea those batteries could power that much for so long. I guess I overestimate the power draw of Servos (mainly because most of my experience is related to RC cars and such) Great learning thread so far.

Badger · « **Reply #17 on:** August 10, 2011, 10:20:34 PM »

Quote from: Jack Daniels on August 10, 2011, 05:48:32 PM

Thanks Mike and SKBT for your knowledge. I had no idea those batteries could power that much for so long. I guess I overestimate the power draw of Servos (mainly because most of my experience is related to RC cars and such) Great learning thread so far.

Yeah, it makes me think of how inefficient my RC car is. It drains it's fairly large LiPo battery in under 10 minutes.

MikeNCR · « **Reply #18 on:** August 10, 2011, 11:06:54 PM »

it takes a lot more power to move around a much heavier machine with a more powerful motor.

Apollyon will drain a 2.3ah pack in ~7min.

Badger · « **Reply #19 on:** August 10, 2011, 11:18:15 PM »

It's pretty light, but I see what you mean. Also, it's 4WD, so it would drain 2x as much as your standard RWD car, I suppose.

Anyways, how would I go about constructing this thing? I was thinking of getting all the parts hooked up and ready, then make as chassis around them, then attach armour panels onto the chassis (All this out of Lexan)