Xbee configuration..

I have to configure the xbees i buy first...This is to make sure that both transmitter and receiver has the same value of transfer which means that i can transfer the data successfully.
This configuration involve in XCTU software which suit xbee series 1 model..
This is some example of the configuration :-

XCTU software

Xbee with dongle

Constructing..

I have to construct my sensor circuit...So here's my schematic and DipTrace sketch i used to construct my sensor circuit :-

Sensor Circuit

After this, I'm going to etch and drill it as usual..

Trace using iron

INA128P

Very simple amplifier...It's advantages are as follows:-

• Low offset voltage
• Low drift
• Low input bias
• High CMR (120dB min)
• Inputs protected up to 40V
• Low current

This amplifier is suitable for any ECG signal because it has been used in many applications of medical instrumentation..

Sensor Circuit..Failed!

As stated before, I used LM358 as my amps..But, it has failed me..Why?...because there's so much noise in this amps and it did not filter the noise accurately...So, I've decided to change to another amps which I prefer most that is INA128P...I think this amp will be successful for me..Let's go to Jalan Pasar...again!..