Op-ampology

Basics
This is a subsection of all our experiments related to:
 * Bioelectronix
 * Fish-Hacking
 * Plant Electrophysiology

Generally on wikipedia

Op-Amps on Practical Electronics

LM386
classic...

Low-Pass filter amp for slow pulse, EKG, action potentials etc


This op-amp circuit is mainly a Low-pass filter and a DC block and can be used to amplify pulse with an LED and LDR or even measuring the heartbeat with electrodes. It can be attached to the arduino or into the line-in of your computer,

http://www.swharden.com/blog/2013-04-14-simple-diy-ecg-pulse-oximeter-version-2/

http://pulsesensor.com/

Instrumental Amp for GSR


Example of Instrumental amplifier to measure resistance in plants or on the skin (GSR)

http://www.chris3000.com/archive/galvanic-skin-response/

http://lessnullvoid.cc/pulsum/nuevo-kit-pulsum/

Links

 * Olimex LOW COST OPEN SOURCE EEG DEVICE