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Activities/Turtle Art/Using Turtle Art Sensors (view source)
Revision as of 17:37, 25 November 2010
, 17:37, 25 November 2010→Lemon battery
[[File:Lemon battery.jpg]]
[[File:Lemon battery.jpg]]
With a copper wire and galvanised nail, the measured voltage is 0.93V, comfortably within the measurement range of the XO1 laptop. The laptop produced negligible loading on the open circuit voltage. With copper wire and an ungalvanised nail the voltage was 0.49V.
With a copper wire and galvanised nail, the measured voltage is 0.93V, comfortably within the measurement range of the XO1 laptop. The laptop produced negligible loading on the open circuit voltage on the XO1. With copper wire and an ungalvanised nail the voltage was 0.49V.
The internal resistance of the lemon battery is around 10k ohms, the input impedance of the XO1.5 of 15k ohms introduces considerable error.
The internal resistance of the lemon battery is around 10k ohms, the input impedance of the XO1.5 of 15k ohms introduces considerable error.