Thanks in advance for your help. I came across this old alarm clock in a thrift store for $4. It has a projector to show the time on the wall or ceiling. I’d like to remove the projector and drive it through Arduino to display scrolling text, but I think I may be in over my head.
I’ve attached some pictures showing the assembled and disassembled alarm clock, the projected image, and a close-up of the PCB text next to the projector connector (labeled left-to-right: G, L+, L-, 1.5, M, H, T1).
Another piece of information I have is the alarm clock is run using Silan Semiconductors SC8560. See below for link to spec.
I’m not sure what my next steps are. Can anyone advise? I’d like to know the following:
- What do the cryptic letters next to the connector mean? I’m assuming “G” is ground and “1.5” is 1.5V?
- I’d like to project scrolling text. Is this even possible?
- Can I power the projector through Arduino or will I need an outside power supply?
- What additional circuitry would I need to accomplish item 2?
- How do I tell the projector what text to display?
Thanks, I’m sure I’ll have more questions once I dig deeper. So you understand my experience level, I’ve completed projects 1 - 11 in the Arduino starter kit and have almost finished an autonomous, light-seeking RC car with ultra-sonic sensor to avoid head-on collisions (just trying to fine-tune the code).
Alarm Clock Pictures.pdf (753 KB)