Essential Electrical Tools

[Akash Rastogi]

Let's compose a list of essential tools (and even some more fancy things) that all teams should have or are nice to have. Suggestions for specific brands/products are great too.

What I've personally been looking for is a complete set of electrical tools, but I can't seem to find an electrical set other than testing kits. Most stuff just has write strippers, crimpers, cutters, and needle-nose pliers.

Other things that probably don't come as part of the kits are soldering irons and such. If you can find a kit that does have this, that'd be great.

[Jamie Kalb]

It's essential to have a crimper, unless you want to solder everything (is this even legal/viable for FRC?). I'd highly recommend a ratcheting crimper, like this: http://www.mcmaster.com/#69555k62/=55yx44. $46.61 at mcmaster-carr. It's been working great for us.

[Andrew Schreiber]

Crimpers, for sure. Akash, take a look at http://www.sparkfun.com/commerce/pro...oducts_id=9466 Should contain most stuff you need. Really more for embedded electronics but most of the stuff will work fine for FRC use.

[sanddrag]

Originally Posted by Jamie Kalb

It's essential to have a crimper, unless you want to solder everything (is this even legal/viable for FRC?). I'd highly recommend a ratcheting crimper, like this: http://www.mcmaster.com/#69555k62/=55yx44. $46.61 at mcmaster-carr. It's been working great for us.

This one is basically the same at much less cost: http://www.harborfreight.com/cpi/cta...emnumber=97420 I've had zero problems with this inexpensive unit, works great.

As for brands, Klien, Thomas&Betts, Knipex, Xuron, and Xcellite are all excellent brands.

Flush cutters are a must. Xuron ones are nice. For battery cables, I like a cutter like this http://www.homedepot.com/h_d1/N-5yc1...atalogId=10053

For a soldering iron, you can't go wrong with a Weller adjustable temperature station. For solder, I like AlplaMetals 60/40 Rosin Core http://www.acehardware.com/product/i...LAID=109368558

For the lugs on battery and main power cables, a small pencil torch is sometimes handy.

A good assortment of cable ties and heat shrink is a must. And a heat gun for shrinking it.

I can't recommend a specific brand of stripper, but you'll definitely need at least one.

I would NOT recommend a Multi-function tool like this: http://doitbest.com/Main.aspx?PageID...paign=DATAFEED
Does everything, but none of them well at all.

If you want to make your own PWM cables, you'll most certainly need this http://www.hansenhobbies.com/product...ools/crimp_ec/ and the connectors http://www.hansenhobbies.com/product...rvoconnectors/

[Dillon Compton]

I'd say the Leatherman Kick. Nice, simple multi-tool. Grip-edges are plastic lined, so you don't get metal biting into your hand. Screwdrivers are of the appropriate size for most FRC stuff. One knife blade. Pliers. Pliers have a cutting section with a divet to act as a wire stripper and you can (with a bit of practice) effectively crimp any connector using the pliers. I rarely use anything else when doing my electronics work. It's about $25 or $30 at Home Depot.

[dtengineering]

Originally Posted by Jamie Kalb

It's essential to have a crimper, unless you want to solder everything (is this even legal/viable for FRC?).

Yes... we crimp AND solder... everything. In six years we've had one bad connection... and that was to the 40A fuse block, where we couldn't solder.

(Okay... which would have been VERY difficult to solder.)

Personally I like to use a little butane torch for soldering the big cables.

Jason

Edit: A clamp-on DC ammeter is really nice to have, too.
Edit #2: Yes, I know a proper crimp should be more than reliable... but we've got lots of hands to make the extra soldering work fairly light. It's just cheap insurance.

[Andrew Schreiber]

Originally Posted by dtengineering

Yes... we crimp AND solder... everything. In six years we've had one bad connection... and that was to the 40A fuse block, where we couldn't solder.

(Okay... which would have been VERY difficult to solder.)

Personally I like to use a little butane torch for soldering the big cables.

Jason

Edit: A clamp-on DC ammeter is really nice to have, too.
Edit #2: Yes, I know a proper crimp should be more than reliable... but we've got lots of hands to make the extra soldering work fairly light. It's just cheap insurance.

Nothing wrong with redundancy.

Nothing wrong with having a backup.

Also, it pays to be sure.

(I'm sorry, I had to)

[Clinton Bolinger]

Here is a Great Video from the 2009 FIRST Championship Conference Presentations:

Electrical Design and Technique For Building A Competitive Robot by Al Skierkiewicz

@35:13 - He talks about Electrical Tools

Enjoy!

-Oris-

[Al Skierkiewicz]

Here is the list shown at the end of the presentation. Prices and part numbers are old so expect them to be lower than current pricing.

MCM Electronics
Description Part # Price
18 GA zip cord/100' 24-1870 $11.97
14 GA zip cord/100' 24-1900 $24.88
12 GA zip cord/100' 24-1915 $31.45
10 GA zip cord/100' 24-1930 $46.47
Solder 21-1845 $14.44
WP30 Soldering Iron 96-429 $47.95
Iron Tip, Large Flat 96-1565 $5.76
Iron Tip, Conical 96-320 $5.76
80 Watt Soldering Iron 21-4345 $8.23
Large Wire Cutters 96-1309 $24.17
General Purpose Cutter 96-235 $20.93
Flush cutters 96-1188 $17.21
T Stripper 28-2700 $15.50
Auto Stripper 10-22AWG 22-3045 $29.95
T&B Style Crimper 22-1780 $10.95
Ratchet Crimper 22-770 $25.95
Needle Nose Pliers 96-1330 $22.75
Retracting Utility Knife 22-825 $3.99
Color Wheel Tape Marker 108-035 $24.95
TERMINALS
Non insulated Female,12-10 108-275 2.99/25
Non insulated Female,14-16 108-270 3.89/50
Full Insulated Female, 12-10 108-290 7.49/25
Full Insulated Female, 14-16 108-285 10.75/50
1-800-543-4330 www.mcminone.com
fax:1-800-765-6960

[joeweber]

A good tool for newbe wiring is the auto stripper http://www.google.com/products/catal...658&sa=title#p
Some younger students do not have the hand stregnth to use standard strippers and thease auto strippers make it easy for everyone.
If you are using a Klien wire crimper to crimp loop conectors make sure the seem of the connector is opposit of the nub of the tool.
http://www.team1322.org/electrical.htm

[Rion Atkinson]

Originally Posted by Dillon Compton

I'd say the Leatherman Kick. Nice, simple multi-tool. Grip-edges are plastic lined, so you don't get metal biting into your hand. Screwdrivers are of the appropriate size for most FRC stuff. One knife blade. Pliers. Pliers have a cutting section with a divet to act as a wire stripper and you can (with a bit of practice) effectively crimp any connector using the pliers. I rarely use anything else when doing my electronics work. It's about $25 or $30 at Home Depot.

I wired my teams '09 bot with my Leatherman Wave. I love that thing. (Of course my cinder block seat got a little uncomfortable... )

Akash,

As for electrical needs I really would say you "need" more than a wire strippers, soldering iron, crimps, crimpers, electrical tape, zip ties, and two screwdrivers (philps and flat). You could easily wire the whole robot with that. Anything more will just be extra stuff in my opinion. Of course, some shrink wrap would go nicely with that. (I find a lighter can shrink it quiet well if you don't want to break out the heat gun. )

[Akash Rastogi]

Originally Posted by Andrew Schreiber

Crimpers, for sure. Akash, take a look at http://www.sparkfun.com/commerce/pro...oducts_id=9466 Should contain most stuff you need. Really more for embedded electronics but most of the stuff will work fine for FRC use.

Ah that's exactly the kind of simple kit I was looking for. We want to purchase about 5 of these for the classroom as well as 2 or 3 for the team. Thanks!

How well does liquid flux work? Never tried liquid flux before.

[DonRotolo]

You must be used to solder that has a flux core. Wasn't always that way.

Liquid (or paste) flux is just that, and you brush a little of it onto what you need to solder, then heat & apply solder. Radio Shack sells both I believe.

It comes in real handy when soldering large wires (you don't need to melt 8" of solder to get enough flux in there) or wires that are a little bit less than shiny-new (these don't take to solder very well; a little dab makes them wet out like fresh copper). Also handy when soldering PC Boards; solder doesn't bridge across traces/pads when there is enough flux. Super handy for surface mount ICs to get rid of solder bridges too.

Just be sure the flux is electronics (e.g., Rosin) type and NOT "acid" flux (which is only good for plumbing, it'll destroy your electronics very quickly).

[Ted Weisse]

Originally Posted by sanddrag

For solder, I like AlplaMetals 60/40 Rosin Core http://www.acehardware.com/product/i...LAID=109368558

Just a quick note...At your home location you can use solder with Lead but in the pits solder MUST BE LEAD FREE.

Ace Hardware: http://www.acehardware.com/product/i...Id=44566603623

Radio Shack: http://www.radioshack.com/product/in...ductId=2062723

[Akash Rastogi]

Originally Posted by Don Rotolo

You must be used to solder that has a flux core. Wasn't always that way.

Liquid (or paste) flux is just that, and you brush a little of it onto what you need to solder, then heat & apply solder. Radio Shack sells both I believe.

It comes in real handy when soldering large wires (you don't need to melt 8" of solder to get enough flux in there) or wires that are a little bit less than shiny-new (these don't take to solder very well; a little dab makes them wet out like fresh copper). Also handy when soldering PC Boards; solder doesn't bridge across traces/pads when there is enough flux. Super handy for surface mount ICs to get rid of solder bridges too.

Just be sure the flux is electronics (e.g., Rosin) type and NOT "acid" flux (which is only good for plumbing, it'll destroy your electronics very quickly).

Haha sorry I meant specifically the liquid stuff, I always use paste even with solder with flux core.