ADC

Read analog-to-digital converter values

Read analog voltage values from ADC pins. Supports LabJack T7 and MCC USB-202 hardware.

Import

from lager import Net, NetType

Methods

Method	Description
input()	Read analog voltage

Method Reference

Net.get(name, type=NetType.ADC)

Get an ADC net by name.

from lager import Net, NetType

adc = Net.get('SENSOR', type=NetType.ADC)

Parameters:

Parameter	Type	Description
name	str	Name of the ADC net
type	NetType	Must be NetType.ADC

Returns: ADC Net instance

input()

Read the analog voltage.

voltage = adc.input()
print(f"Voltage: {voltage}V")

Returns: float - Voltage in volts

Examples

Single Reading

from lager import Net, NetType

sensor = Net.get('TEMP_SENSOR', type=NetType.ADC)
voltage = sensor.input()
print(f"Sensor voltage: {voltage:.3f}V")

Continuous Monitoring

from lager import Net, NetType
import time

battery = Net.get('BATTERY_SENSE', type=NetType.ADC)

for i in range(10):
    voltage = battery.input()
    print(f"Battery: {voltage:.2f}V")
    time.sleep(1)

Data Logging

from lager import Net, NetType
import time
import csv

sensor = Net.get('CURRENT_SENSE', type=NetType.ADC)

with open('readings.csv', 'w', newline='') as f:
    writer = csv.writer(f)
    writer.writerow(['time', 'voltage'])

    start = time.time()
    for i in range(100):
        elapsed = time.time() - start
        voltage = sensor.input()
        writer.writerow([elapsed, voltage])
        time.sleep(0.1)

Multiple Sensors

from lager import Net, NetType

sensors = {
    'TEMP': Net.get('TEMP_SENSOR', type=NetType.ADC),
    'CURRENT': Net.get('CURRENT_SENSE', type=NetType.ADC),
    'BATTERY': Net.get('BATTERY_SENSE', type=NetType.ADC),
}

for name, sensor in sensors.items():
    voltage = sensor.input()
    print(f"{name}: {voltage:.3f}V")

Supported Hardware

Hardware	Channels	Range	Resolution
LabJack T7	14 (AIN0-AIN13)	+/-10 V	16-bit (~0.3 mV/LSB)
MCC USB-202	8 (CH0-CH7)	+/-10 V	12-bit (~4.9 mV/LSB)

Both devices support bipolar measurement (positive and negative voltages).

Pin Naming

LabJack T7:

Pin Input	Channel
0-13	AIN0-AIN13
"AIN0"-"AIN13"	AIN0-AIN13

MCC USB-202:

Pin Input	Channel
0-7	CH0-CH7
"CH0"-"CH7"	CH0-CH7 (case-insensitive)

Notes

• ADC nets work directly without enable()/disable() calls
• Returns voltage as a float in volts
• Both devices have a +/-10 V input range (bipolar)
• LabJack T7 shares a connection handle with DAC, GPIO, and SPI operations
• USB-202 opens and closes the connection on each read
• Net names must match those configured on the Lager Box