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A fresh beginning

A project log for Mr. Christmas Laser Projector Brain Surgery

An attempt to document the Mr. Christmas laser projector and repurpose it as a general-purpose laser projector.

olsenolsen 12/19/2018 at 04:250 Comments

So, I did a preliminary dissection.

I found that the main  microcontroller is a varient of the intel 8051 microcontroller manufactured by Silicon Labs called the c8051f410.

It differs from the 8051 in that it has two 12 bit DACs. These are used to drive the XY coordinates of the laser. The rom is stored on an EEPROM chip. A second DAC is tied to a serial port on the 8051 to drive speakers. A second microcontroller presumably manages the warm-up and cool-down of the laser. The unit was interacted with via a 4" diagonal capacitive touchscreen with its own micro on board. it is connected to the motherboard by a 4 wire cable (I2C?). The case was secued with four to six triangle security bits, I used a nintendo security bit to remove them (not the best form, I know but at least it isn't the comment text from xkcd 1474). Once I take it apart and post pictures, I hope this will attract enough attention to help me puzzle out the analog stuff.

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