GoPro waterproof case power supply

Back quickly, and back to electronics! Or in this case, electrics!

The problem is well known: You have a GoPro camera and would like to power it beyond the battery life for e.g. some outdoor long time-lapse movie.

There are some external batteries available, and some projects that connect a USB cable through the case, but they either require a hole in the case to pass the cable, or involve some very thin conductors, which, do not damage the case, but do potentially compromise the water proofness of the case.

So here's what I've done:

Got a USB cable and stripped it to the connector, and trimmed the connector as to be able to put the camera with the cable back in the case:

Connected the 2 power wires to two of the buttons on the case, from the inside.

Since the buttons are metallic, all that is left is to connect the other end of the USB cable to the buttons on the outside! Lo and behold, you have power to the camera via the buttons, with no damage to either camera or case, and all it costs is the price of the USB cable, which you probably have lying around anyway!

Next step is to make a nice connector to put on the outside over the buttons, with all the wiring!

I'm back! and this time with a completely different project!

I've been away from posting here, as I did not have much available time to report.

I did some things, which I still intend to report, but this time, I am redoing the upholstery on some old chairs!
These are some pretty old chairs, that belonged to my grand-mother, so they are at least 40 years old, I guess more than that.

About 15 years ago I replaced the internal foam and elastic bands on the sitting area, but left the top intact. Now, after an unfortunate incident, the cloth got destroyed, so I had to fix it!

Started by removing the bottom from the chair, and the artificial leather cover.

 

You can appreciate the work that went into the cutting and placing of the cover!

The round headed nails were placed by me during the foam replacement. The original nails are the flat headed, and they are very short and tapered, very interesting nails! Possibly special upholstery nails...don't know...

I then cut a piece of new material and stapled it all around. It is not as stretched as I would like to, but it was the first time...I'll try to do better for the second chair!

 

I also inserted some screw studs (sorry don't know the correct name) to be able to use metal screws instead of wood screws.

Overall the result is pretty neat! but I'm not gonna do the back, as that is something for a professional.
The photos aren't great, but the phone was all I had around.

I'll try to make a time-lapse movie of the repair of the second chair! stay tuned!