The BatLogger II

A bat activity logger for the Onset HOBO data logger

The circuit for the Simple Bat Detector is modified only a little for use with the PIC data conversion circuit. The DIV-16 output from the CD4024 divider is attenuated to provide a monitor output signal to set up the logger. The DIV-32 output from the CD4024 is brought out to feed the sampling input of the PIC.

The resulting circuit is shown in the diagram below.


The bat detector circuit, PIC data conversion circuit, and the power supply circuits can all be laid out in a very small space ... as can be seen by the layout of one of my prototype circuit boards.



Tony Messina - Las Vegas, Nevada - email:

Information on the BatLogger II was first published in May, 2010 ... last updated November, 2010