I finally finished my SpokePOVs and they work great!!!
I did a few things differently for my install that (IMHO) improves the overall package...LiPo Battery
Each SpokePOV is drawing its power from a LiPo Battery
These are 1/3 the weight of the standard AAs (based on using three of them).
Also, they are rechargable, and keep their juice for ages.
They plug into the board via a little connector soldered to the board at J1.
These are attached to the board with velcro pads and a cable tie through the holes for the AA battery clips.
I wanted to go with just velcro, so I could pop the batteries off for recharging, but it didn't feel secure enough.Waterproofing
I applied several coats of Silicone Conformal coating to seal the board, and checked it with a UV lamp.
Hopefully this should be OK to protect my SpokePOVs from Vancouver's not-so-dry climate.
I also covered the LiPo Batteries in heat-shrink tubing and closed-off the ends with silicone sealant (the stuff you'd use for a bathroom).
Where the LiPos plug into the board, I made a little jacket out of heat-shrink that slides over the connector (I can post more pictures if anyone is interested).
Finally, I bought connectors to cover the I/O ports and plugged any gaps in them with the sealant.Security
After all that work, I didn't want my SpokePOVs nicked, so I tried my best to make it difficult for them to be removed.
At the top connector, where the spoke is a little fatter, I bolted the SpokePOV to the wheel with a nylon cable clamp
Then, at two of the other connections I used metal wire and threaded it around the spoke using a technique
similar to one I found via the Monkelectric website.
Now thieves will at least need a screwdriver, scissors, pliers and a lot more time to relieve me of my goods.
Let's hope they don't just decide to cut my spokes...Also...
I found some cool, curved, rare-earth magnets
at my local electronics shop that fit beautifully around my bike's frame.
I still had to double them up to get the Spoke POVs to fire reliably though...
All the extra ingredients above should be readily available at your local hardware and electronics stores.
Feel free to ping me if you have any questions.