Manual

Use the preceding circuit, but add some lights on the sides, as shown.
Assembly (adult supervision recommended):
1. Place base grid supports on base grid A.
2. Place parts on grids B & C (except jumper wires), and install into base
grid supports on grid A. The pegs on grids B & C should be facing outward.
3. Place parts (except jumper wires) on grids A & D. There are only a few
changes to the parts on grid D compared to project 43.
4. Mount grid D on top of grids B & C using 4 stabilizers.
5. Add the jumper wires (2 blue, 1 red, and 1 black.
Turn on the slide switch (S1). The LEDs (D6 & D8) and the light tunnel
(U30) will be on unless there is bright light on the phototransistor (Q4), so
vary the amount of light shining on the phototransistor.
The horn (W1) will not make any sound (it is used here to help control the
phototransistor current).
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Project 44 Automatic Lights