After all these, again I realize I need one more thing. A Dry Box or Dry Cabinet. So I called 2 local shops in Colombo, Sri Lanka to check prices. I got shocked by listening to the price.
One shop wanted LKR 18,000/- (USD 169) for a Dry Box with analog meter and electrically rechargeable desiccants. Two of lower versions of available for LKR 4,500/- (USD 42) which is just a plastic box with some silica gel bags in it. Another cheep version was available with an analog meter with silica gel bags for LKR 7,500/- (USD 70).
For me Dry box is just a box which can keep the humidity lower than the outside humidity. So I decided to do some research on this to see whether I can build my own Dry Box and I ended up with this.
What have I done?
1.Found a box which can be fully sealed (air tight) which is adequate enough to put my gadgets. I ended up purchasing a Microwavable food container for LKR 1225/- (USD 11.50)
2.Then I bought a sponge of 4 inch thickness. LKR 380/- (USD 3.5 )
3.Digital Hygrometer with temperature meter from ebay. With shipping it was USD 11.98 ( Unit was 3.99 and shipping was 7.99)
4. Rechargeable dehumidifier from ebay for USD 15.99. This is the item which was difficult to find and I had to pay LKR 140/- as taxes for Sri Lanka customs.
So the total cost for me was USD 43 for the total solution.
Below are the items I have used and how I have made my Dry Box. This is quite simple. So I am not going to explain step by step. Hope pictures speaks for it self.