Submitted by TrystanLea on Wed, 02/03/2010 - 11:44.
Hey Steven, the 2 100k resistors are important, they form the voltage divider that biases the signal from the CT by 2.5V to keep the signal from the CT within the 0 to 5V analog input range required by the arduino.
If you dont intend on having a display you dont need the little wire jumpers and the 5way header on the far left side that can be seen in this picture: http://openenergymonitor.org/emon/sites/default/files/B08.JPG
Does that make sense, sorry if its not so clear.
Hey Steven, the 2 100k
Hey Steven, the 2 100k resistors are important, they form the voltage divider that biases the signal from the CT by 2.5V to keep the signal from the CT within the 0 to 5V analog input range required by the arduino.
If you dont intend on having a display you dont need the little wire jumpers and the 5way header on the far left side that can be seen in this picture: http://openenergymonitor.org/emon/sites/default/files/B08.JPG
Does that make sense, sorry if its not so clear.