This script shows how to read voltage from AIN0.

LJ - 10.30 - AIN0_read.py

'''
LJ - 10.30 - AIN0_read.py

This script shows how to read voltage from AIN0.

Components
----------

- LabJack T4
- Potentiometer
  - Midlle pin to AIN0
  - Left pin to VS
  - Right pin to GND
- Wires
- Breadboard

Course
------
Data acquisition and automation with LabJack
https://app.techexplorations.com/courses/labjack/

'''

from labjack import ljm
import time

# Get handle to LabJack device
handle = ljm.openS("ANY", "ANY", "Peter_T4")
#handle = ljm.openS("ANY", "ANY", "ANY")  # Any device, Any connection, Any identifier
#handle = ljm.openS("T7", "ANY", "ANY")  # T7 device, Any connection, Any identifier
#handle = ljm.openS("T4", "ANY", "ANY")  # T4 device, Any connection, Any identifier
#handle = ljm.open(ljm.constants.dtANY, ljm.constants.ctANY, "ANY")  # Any device, Any connection, Any identifier

info = ljm.getHandleInfo(handle)
print("Opened a LabJack with Device type: %i, Connection type: %i,\n"
      "Serial number: %i, IP address: %s, Port: %i,\nMax bytes per MB: %i" %
      (info[0], info[1], info[2], ljm.numberToIP(info[3]), info[4], info[5]))

# Setup and call eReadAddress to read a value from the LabJack.
address = 0 #Address for AIN0
name = "AIN0"
dataType = ljm.constants.FLOAT32 #UINT32

while True:
    result_address = ljm.eReadAddress(handle, address, dataType)
    result_name = ljm.eReadName(handle, name)

    print("\neReadAddress result: ")
    print("    Address - %i, data type - %i, value : %f" % (address, dataType, result_address))

    print("\neReadName result: ")
    print("    Name - %s, value : %f" % (name, result_name))

    time.sleep(1) # Sleep for 1 second

# Close handle
ljm.close(handle)