Topic: Chumbi -- raspberry pi in a chumby classic
I figured I would start posting my progress here of cramming a Raspberry Pi into a chumby classic.
The project is in the early stages, but it looks pretty straightforward.
I have some big goals, but I expect moderate success with this.
Here's the Chumby I bought from a member of this forum. The screen is completely destroyed, which is why I am comfortable giving this a shot. No chumbys were harmed in the making of this project.
Glamour shots of the chumby:
The chumby that sits on my bedside table is a model 3.8, while this is a v3.7.
The place where charms attach is different, as are the stamps on the bottom of the unit. I know this unit doesn't have a variable backlight either, though I obviously have no way to test that here.
Overall, not a bad looking unit.
Here's a chumby with its face peeled off. The screen was easy to remove. The rubber came off with minimal effort. If I do this again, I'll make a video.
The cable runs to the back of the unit and connect all the ports and speakers to the mainboard.
Speaking of, here's there heart of the chumby:
The main board is attached to the back of the screen, with a wifi daughter board sitting behind that.
I have no idea why this wifi card is placed like this. Seems like the USB dongle could just be plugged into the main board. Maybe the reception was bad with the adapter next to the rest of the electronics?
Here's the unit with all the stuffing removed. I was surprised to find that the bend switch was just a normal switch with a bent metal tongue. Not what I expected.
There are 4 screws holding the speakers and ports onto the rubber on the back of the unit. I tried to take a picture, but there wasn't much light deep in the Chumby's guts.
I pulled out the daughter card that is mounted between the speakers. It's an interesting little unit. Looks like someone had a good time when designing these boards.
I have high hopes for this daughter card. I don't see any sort of control board on the card, so I'm hoping everything is directly wired to that daughter board.
I'm certain those speakers can be reused, but I'm also hoping I can splice the ribbon cable with a USB cable extender and use the USB ports on the daughterboard as extensions for the ports on the raspberry pi.
I don't know if the headphone jack or power jack can be reused, but I'm looking into it. Once I find my multimeter, I can find where everything goes and make some decisions.