This weekend I have finished the main boards for the projector. On the left is the board for the white led that will be used as the light source for the projector. It includes a FET for switching the led power, and a set of resistors to limit the current. These make up a cheap potentiometer, the red wire (not attached in the picture) can be connected to one of the resistors with crocodile clip giving a range from 1 ohm to 30 ohms.
On the right is the motor and gap detector board. The motor runs from it's own 12V power supply, and again a FET is used to switch the power. Something is wrong with this board, as the motor runs on it's own if only 12V is connected and the FET can get hot. To be investigated further ...
No comments:
Post a Comment