Sagitta.se

By Fer_
2008-11-05 21:58

I stubled across this today and almost fractured my wallet, well, not really..

This is a store aimed towards schools and such, offering physics and chemestry gear, amongst all of that, I found electronic kits really cheap

http://www.sagitta.se/hulodut.html

They are based in sweden, and I havent bought anything from them, yet, but the miniature industrial robot arm @ 25.5eur + VAT sure looks tempting, especially since others I have seen cost up to 10 times more.

Seem to serve entire europe, but primarily the norse countries.

Enjoy!

By BaseOverApex @ Wed, 2008-11-05 22:17

Right Enough

It wouldn't cost me a second thought to swap out those switches for some miniature relays. If only I could read the web page!!

By Mr Clean @ Wed, 2008-11-05 22:57

http://translate.google.com/t

http://translate.google.com/translate?hl=en&sl=sv&u=http://www.sagitta.s...

Is Google really converting that right? The robot arm is 28 dollars?!

http://www.google.com/search?client=safari&rls=en-us&q=219+SEK+to+dollars&ie=UTF-8&oe=UTF-8

By jklug80 @ Wed, 2008-11-05 23:02

245 SEK converts to roughly

245 SEK converts to roughly $30 USD. According to google search.

By Ant @ Wed, 2008-11-05 23:34

on an Australian site in

on an Australian site in english: http://www.jaycar.com.au/productView.asp?ID=KJ8916&CATID=&keywords=robot+arm&SPECIAL=&form=KEYWORD&ProdCodeOnly=&Keyword1=&Keyword2=&pageNumber=&priceMin=&priceMax=&SUBCATID=

By robologist @ Thu, 2008-11-06 01:28

Here's the arm in the US and UK

http://www.owirobots.com/cart/index.php?l=product_detail&p=87 for $29.95

http://www.red5.co.uk/Robot-Arm-pr-515.html for £30, seems a bit high there.

By BaseOverApex @ Fri, 2008-11-07 23:18

Price mapping

Until some days ago, there were about $2 to the £1. I have noticed over a period of several years, though, that stuff which costs $50, costs £50, rather than the £25 you might expect.

Makes me sick.

By jklug80 @ Sat, 2008-11-08 04:00

Anytime I buy from the UK it

Anytime I buy from the UK it is about $1.5 to $1.75 in exchange for £1.

By Fer_ @ Thu, 2008-11-06 09:06

VAT

I just want to remind you again that the prices listed at sagitta are VAT excluded. Just so noone blames me later ^^

By OddBot @ Thu, 2008-11-06 23:32

Robot Arm

I bought one of these about 3 months ago. They're quite good quality,each gearbox has a clutch. You'll have to assemble it all from scratch so by the time your finished you'll know it inside out. The only fault I could find is that the wrist doesn't rotate, only pivots up/down but on the upside it comes with a white LED mounted between the grippers. I'm in the process of converting it into a mobile arm that I can use for practicing my programming on.

As you can see I'm decking it out with a full set of sensors. See my tip on "using hall effect sensors for pots".

By maneuver @ Thu, 2008-11-06 15:15

thread stealer

ODDBOT:

I'll share my thoughs on keeping your balance as soon as you make a robotpage about the robot on ther picture above.

/ vzz-clck-"Maneuver"

By OddBot @ Thu, 2008-11-06 23:30

Fair enough

Fair enough, wasn't trying to steal the thread, just letting you know its good and bad points based on experience.

By voodoobot @ Thu, 2008-11-06 23:52

Hey OB, so out of curiosity,

Hey OB, so out of curiosity, is there a lot of play in the gearing and does it feel solid or kinda cheap. From the pics it doesn't look like cheap plastic but it's always hard to tell. Just wondering since it's so cheap.

By OddBot @ Fri, 2008-11-07 01:22

Quality

The quality is very good, better than I expected. There is play in the joints but not more than you'd get from any gear train. The gears were reasonably thick and with the clutch on the output of each gearbox it would take a fair bit of abuse to break one. The motors are only 3V but run smoothly. The arm isn't designed to lift more than 100g.

Basically if your happy with the price (it seems to vary depending on where you get it from), don't need the wrist to rotate and are looking for something that can be made into a robot then you won't be disappointed.

By Bubbles @ Mon, 2008-12-08 18:43

Any problems with the clutches?

I remember reading about another affordable robot arm that had clutches that where plagued by slipping.

Anyone notice anything similar on this one?

Anyway, at that price I guess I can't go wrong - worst case scenario I disable the clutches all together.

By OddBot @ Mon, 2008-12-08 22:02

The clutches could be locked

The clutches could be locked with some glue but to be honest they only slip when the arm trys to tie itself in knots like mine does when the code goes astray.