Search found 1831 matches

by BeligerAnt
Thu Mar 23, 2017 7:44 pm
Forum: Antweights
Topic: Seismic Robot Build Diary [First Time Builder]
Replies: 6
Views: 6314

Re: Seismic Robot Build Diary [First Time Builder]

You could use 3mm polycarbonate for the base, but it will almost certainly be too heavy if you make the entire robot from 3mm. Most people tend to use 1mm or 1.5mm as it is fairly easy to bend and a reasonable compromise between weight and strength. Most people use Pololu (or equivalent) 10mm gear m...
by BeligerAnt
Wed Mar 22, 2017 8:51 pm
Forum: Resource Websites
Topic: PCB Manufacture
Replies: 10
Views: 35576

Re: PCB Manufacture

With very small boards like this you may often get a few extra, but it will depend on how they fill the panels when they run the boards. A good deal if you get the offer and can make use of it though!
by BeligerAnt
Mon Mar 20, 2017 8:09 pm
Forum: Antweights
Topic: Help/Build diary for/of my first antweight.
Replies: 29
Views: 59392

Re: Help/Build diary for/of my first antweight.

What are the dimensions? Without some dimensions you could have any arbitrary answer but the angles wouldn't necessarily be what you wanted!
by BeligerAnt
Sat Mar 18, 2017 7:23 pm
Forum: Antweights
Topic: Help/Build diary for/of my first antweight.
Replies: 29
Views: 59392

Re: Help/Build diary for/of my first antweight.

You can figure out the movement your linkage will give using some fairly basic geometry, remember that a servo doesn't move much more than 90 degrees without some tweaking. Figuring out the speed can be a bit more complex as it's not always constant. This tool http://blog.rectorsquid.com/linkage-mec...
by BeligerAnt
Sat Mar 18, 2017 4:50 pm
Forum: Antweights
Topic: Help/Build diary for/of my first antweight.
Replies: 29
Views: 59392

Re: Help/Build diary for/of my first antweight.

First of all, welcome to the forum! Rory's kit won't work with DSMX transmitters, only DSM2.This is down to the receiver module that he uses. You can get the speed controller board without the receiver and use your own to avoid compatibility problems but it will probably be bigger and heavier. The T...
by BeligerAnt
Fri Mar 10, 2017 4:49 pm
Forum: Antweights
Topic: Best Brushed Drive Motors?
Replies: 7
Views: 6327

Re: Best Brushed Drive Motors?

The only reason for not recommending mounting motors with big wheels directly to the chassis is the massive gap under the back! There are ways around it of course and that's part of the fun :)

Bottom line: build what you like, however you like. Have fun!
by BeligerAnt
Thu Mar 09, 2017 7:35 pm
Forum: Antweights
Topic: Best Brushed Drive Motors?
Replies: 7
Views: 6327

Re: Best Brushed Drive Motors?

I've done the same, doesn't mean I'd recommend it though! :P
by BeligerAnt
Wed Mar 08, 2017 9:25 pm
Forum: Antweights
Topic: Best Brushed Drive Motors?
Replies: 7
Views: 6327

Re: Best Brushed Drive Motors?

6-7cm diameter wheels are perfectly feasible in an antweight, although you wouldn't want 30:1 gearboxes - most arenas are less than 1 metre long. The Pololu motors (or Ebay "equivalents") are ubiquitous in ants. With larger wheels you will need to mount them above the chassis rather than s...
by BeligerAnt
Tue Mar 07, 2017 10:19 pm
Forum: Antweights
Topic: "Sioc" Build Diary
Replies: 20
Views: 22509

Re: "Sioc" Build Diary

The largest, and also shown in the video, is that Sioc has far less grip on its left wheel when the right wheel isn't in use. The entire machine drifts left constantly when I'm driving it, but if the stick is in the bottom left or top right position, then there doesn't seem to be any grip at all, e...
by BeligerAnt
Fri Mar 03, 2017 10:52 pm
Forum: Resource Websites
Topic: PCB Manufacture
Replies: 10
Views: 35576

Re: PCB Manufacture

I recently stumbled across this site which gives prices from a number of low-cost prototype vendors: http://pcbshopper.com/ The only downside is all the manufacturers seem to be based in China or the USA so shipping time can be an issue (long or expensive!). I've yet to find anywhere in Europe that ...