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PDA 06 5/27/03 8:37 AM Page 110

Figure 6.3 PDA Robotics
Artwork for the circuit board.

Important: Be sure that no fluorescent lights are on anywhere nearby
when doing this. Place a clear glass or acrylic weight over the board
and transparency and place under the fluorescent light source. Expose
the board.

Developing Your Board. The development process removes any pho-
toresist that was exposed through the film positive to ultraviolet light.
Warning: Developer contains sodium hydroxide and is highly corro-
sive. Wear rubber gloves and eye protection while using it. Avoid con-

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