Those who know me personally know that I am a insulin dependent diabetic. For those who don't know me are probably at least aware that there are somewhere around a bazillion(don't quote me on that) other diabetic people who also require insulin. This can pose a problem for those of us who like to or have to travel.
Insulin is okay to be at room temperature(25C) for about a month before you can begin to worry about it effectiveness. After that amount of time it can start to weaken - the proteins break down. Usually the bottle or cartridge that is left out of the fridge for current use is gone before that time line, so for most people it isn't an issue. For someone like me, I take a very small amount of insulin, and this means that the cartridge that I use will last a lot longer for me and could be pushing the bounds of its life. I will be designing a number of different coolers for Pens, spare cartridges and Bottles to keep these items at an ideal temp
I decided to order the case I designed from Shapeways, and it came in today. I'm very happy with the outcome.
The pressure fit for the heat sinks couldn't be better. Now I just need to make the circuit board, which should be really simple. Then see if it works. My concern right now is the fans may not be able to pull away enough heat. I won't be putting a battery in this. It will be USB powered.
Put the housing together with the known size of the parts I'm using(Peltier, Fan, Heatsinks) and now have a board size I can work with.
Should be all dimensioned for a shapeways print in Nylon. I will throw together a really quick PCB since its only a couple components. Board can be 32x15 which is a good amount of room. There is also room for a small LiPo, but I believe I will have to have a much larger one put on the bottom for it to be any good, and keep cool.