This shows the gradual evolution of cowling solutions for the LDR. The presence of ambient light raises not only the zero level but also the break level between 0 and 1, so it’s been a headache to adjust the arduino programming with the variation of light.
None of these solutions would even consistently work until #4, and of course it’s hardly satisfactory to jumper the LDR to a separate breadboard just so that I can build an adequate cowling around it. I’m hoping that the ambient light shielding problem will go away once I have a robot housing to put the LDR into (see previous entry).
At any rate, I think it’s time to move onto the Mintduino and the ‘Naked Atmel.’