# Wiring (beginners question)

As a total beginner I'm wondering what people use to connect Arduino's, motor controllers etc. etc.? I'm on the verge of buying some pre-made jumper wires (http://robosavvy.com/store/product_info.php/cPath/35/products_id/1178) for convenience more than anything else. But I'm wondering what more experienced people do? Do you make up your own jumpers from scratch? Some general advice/shared experience on wiring would be interesting.

Cheers

Huw

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unless you are connecting high current draw motors, standard jumpers should be fine for a start. Shorter is better, meaning don't use the longest jumper because it is closer to your hand at the time you are assembling.

To give you a bit more info, the current handling capability of a given wire diameter is controlled by it's length. That is not to say that you should try to run 20A through a 25mm section of 20 gauge wire because I said it wouldn't matter. :P If you search online you will find suggested current handling capabilities of different wire gauges. It pretty much boils down to Ohms law (E / I * R or as I guess they teach it these days V / I * R) What Ohms law says is, if you want to solve for V then V = I * R or for I then I = V / R. V is for voltage in Volts, I is for current in Amps, R is for resistance in Ohms. Just for fun P = I * E or Power in watts = Current * Resistance.

I will let more experienced people give you more useful info ;)

Current capability of a conductor is actually determined by its CSA or cross sectional area. The AWG of a cable is related to its CSA.

Premade jumper wires should be fine unless you expect to carry more than an amp or so.

So pre-made jumpers are fine then? I'll order the Robosavvy ones later today - they seem like decent value.

:-)

Huw

the robosavvy set looks decent enough and as bird mentions "shorter is better" however those are seriously short and the only way to lenghen them would be to put a m/m between two f/f - and at that rate youll run out VERY quickly - myself id get a backup set of middle lengh (10-20 cm) from china/ebay - they come in very handy and will probably just turn up at your door when you suddenly realise youve run out

i ordered and received these type of jumper, without try any circuit I just plug in the breadboard.

That look not really great, easy removing from the board, the "banana" connector are (I think) tooo small for the hole of the breadboard.  I didnt trust at all the electrical contact !!!!!