Waterproof Jeenode (Arduino)

I've put one Jeenode with graphics lcd, piezo speaker, stripped Nunchuck and an AA power board in a transparent Otterbox 1000. Another Jeenode with a 16x2 lcd and lcd plug I put in a bigger Otterbox 2000. These boxes are affordable yet waterproof till 100 feet (thirty something meters) and are good enough for my current experiments leaving even deeper experiments as a future exercise.

Last week I took the small box to the bottom of the pool (3.5m) to see how well a big clock on the graphics lcd would look. It was visible up to about 5 meter. Today I let the two boxes send each other wireless messages to see how that would work under water. I expected 10cm at most but was surpriced that 1 meter from either side of the bath to the other worked fine. Tomorrow I'll do a more extensive test in the pool. I'm currently using the default speed at 868 Mhz.

I intend to recheck with a lower speed on wednesday and perhaps on another frequency if someone thinks that would be better.

Than on friday I will take the two Jeenodes to the bottom of a 20 meter deep pool.

Category:

Science & Technology

Tags:

• freediving
• apnea
• waterproof
• jeenode
• arduino
• otterbox

[FataleXception0F]

try the wireless messaging in the bath when its empty - determine whether it is the water that is the blocker, or the metal shell, or the cases. The greater the frequency the more it is affected by water. 433MHz might not be so bad, but you will need the 433MHz radio model to try that.