USER MANUAL FOR HARDWARE REV 1.0
06-JUN-2019
PAGE 3
3.
HARDWARE INTRODUCTION
There are several features built into this little board that you should be aware of as they can easily be
missed when setting up the hardware for the first time. Your software selection may or may not
support all the features right out of the gate.
This board contains the following features which will be discussed in more detail in the following
sections
•
1 Duplex Channel
o
Selectable High/Low COS/COR
o
Selectable High/Low CTCSS
o
Selectable Flat Audio
o
Adjustable audio input level
o
Adjustable audio output level
•
Built in audio (input/output)
•
Analog to Digital Converter
•
GPIO expansion
GPIO
PORT 1
ADC
AUDIO