Hi. This is my first time working with arduino. I am not expert in programing or electrical installations. But I want to do a presentation with some temperature/humidity sensors and an arduino board. I've already connected two sensors RHT03 running parallel (see picture). The code works fine and both sensors send me data. Now, what I want is to put these sensors far distance from the tablet board (2m). They will be placed in a box while the arduino must be on a table near the computer. I prepared a extension cable to plug the sensors (right side of the picture), but when I connect both sensors with the cables the energy falls down (or something because the leds turn off) and the system does not work. Can someone explain me what is going on and how to fix it? I do not know technical terms for this, so I could not look for specific information in the forum.
Thanks in advance.
Link to picture: http://imgur.com/CpasAZN