Slowly but surely

I’ve collected most of parts I need to make this ‘bio-orb’ as can be seen from the pictures below. I’ve spent much of my time getting to know Arduino by testing out a number of different sensors using a breadboard. I’m now starting to assemble a kind of mini-floodlight that will be positioned an inch or two above the orb entrance and I’m also wrestling with the voltage needs of two halogen UV lamps. Arduino has only 5 volts to play with so I’ve had to work around this with some additional batteries. This will provide artificial light for plants when the light sensor no longer finds natural light:

DSC00018

DSC00019

update @ 12.18am

Have managed to successfully wire up an LDR light sensor to Arduino. Spent the last several hours desperately trying to get arduino to display the sensor output values on screen and here they are refreshing every half second:

lightsensor_readingsThe readings that display between 150 -200 are when I cover the light sensor with my hands. When I take them away and expose the sensor to the light in my room, the readings bolt up to the 600’s. Even knocking some of the light exposure away from the sensor pushes the reading down to the 300’s/400’s.

~ by heathenchemist on May 12, 2009.