Hi, I’m very interested in this session. Although, not a tablet!
I’m trying to utilise some of the subsystems from a Casio led projector. The challenge is to reverse engineer the control interfaces (~8 digital/analogue signals) for the following modules.
- PSU enable, blue laser and red led driver boards
- Fan control board
- Auto focus stepper motor drive board
These are discrete modules separated from the main CPU board that I’m not interested in.
I have one projector working with some dead pixel disease to capture the digital and analogue signal readings. And one that is in pieces that can be used to test if the interface works.
I believe the blue laser module is about 25 watts, so I will need to build a safety test rig and and acquire safety glasses before trying, as this is very dangerous. The working projector has part of the case removed for capturing signals, but other than that, has not been modified and emits only white light.
All things being equal and a lot of research, poke and hope, I can collimate four of these units and focus with suitable lenses to build a fully cooled 100 watt cutting laser with a small footprint.
Will