To have the belt fit perfectly on the wheel and not slip off, we covered the wheel in duct tape and then layered more tape on the sides where the edges of the belt would end. This worked very well!
Next, we modified the base structure to be very sturdy and to have a place to put the generator. In these photos, the generator is not yet fully mounted, but will be soon with zip ties.
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| Front view of base (facing the wheel head on) |
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| Side view of base |
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| Top view of base |
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| View of the generator shaft and the lego piece it needs to fit |
NEED TO DO:
Visit machine shop next week and ask about suggestions on how to fit the generator shaft into the lego piece and how to mount the wheel and base to the wooden board.
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Electronics Group: Jess and Courtney
Want LEDs to run in a parallel circuit (so that each bulb lights up at different times)
Going to first try using a current with 4 milliamps
The lights require 3 Volt batteries (9 Volts will kill the LEDs)
FROM EXPERIMENTING:
the light from the LED is discernible when it reaches 2.4 Volts and needs 4 milliamps
When the wires are connected and attached to the external power source, the total amperage reaches 12 milliamps.
NEED TO DO:
calculate the resistor we need to get from 5Volts emitted by Voltage Regulator
(using 5 mA, 3V bulb, +/- 2V resistor)
need to look up datasheets for the 7805
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