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AnnaGerber / node-ardx

Arduino Experimentors Guide adapted for nodebots
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Added missing start method and downgraded resistor #5

Closed shodanuk closed 10 years ago

shodanuk commented 10 years ago

The motor.start() method was missing from this version of the code example. I also found that the 10k resistor did not power the motor but switching it to a 300 ohm one worked.

shodanuk commented 10 years ago

I should also have mentioned that the Sparkfun manual also uses a 330 ohm resistor for this exercise

achingbrain commented 10 years ago

We discovered the exact same thing at a recent NodeBots of London event. Several beginners stumbled on the Spin Motor Spin exercise because the resistor rating was wrong. It should definitely be 330 ohm instead of 10k.

@AnnaGerber Any chance of a correction to the the node-ardx.org website?

AnnaGerber commented 10 years ago

Thanks. I'll see if I can get hold of the Sparkfun version of the circuit diagram image to match

achingbrain commented 10 years ago

If it helps, there's a PDF version of the Sparkfun Inventors Kit guide here.

AnnaGerber commented 10 years ago

Thanks. There are Corel Draw files for the various versions of the ARDX circuit diagrams available from http://ardx.org/src, which is what I'll use to update the diagram

I have an older version of the Sparkfun Inventors Kit, which is the source of the 10K resistor in the circuit diagram, which worked for me when I tested the code for this circuit, so thanks for letting me know it's been causing problems with more recent kits.