Thermocouple

Read temperature from thermocouple sensors

Read temperature measurements from thermocouple sensors.

Import

# Net-based API (recommended)
from lager import Net
from lager.pcb.constants import NetType

# Or use convenience import
from lager import Net, NetType

# For direct dispatcher access (advanced)
from lager.thermocouple.dispatcher import ThermocoupleDispatcher

Methods

Method	Description
read()	Read temperature in °C

Method Reference

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

Get a thermocouple net by name.

from lager import Net, NetType

tc = Net.get('TEMP_SENSOR', type=NetType.Thermocouple)

Parameters:

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

Returns: Thermocouple Net instance

read()

Read the temperature from the thermocouple.

temp = tc.read()
print(f"Temperature: {temp}°C")

Returns: float - Temperature in degrees Celsius

Examples

Single Reading

from lager import Net, NetType

probe = Net.get('OVEN_PROBE', type=NetType.Thermocouple)
temp = probe.read()
print(f"Temperature: {temp:.1f}°C")

Continuous Monitoring

from lager import Net, NetType
import time

tc = Net.get('FURNACE_TC', type=NetType.Thermocouple)

print("Monitoring temperature. Press Ctrl+C to exit.")

while True:
    try:
        temp = tc.read()
        print(f"Temperature: {temp:.2f}°C")
        time.sleep(1)
    except KeyboardInterrupt:
        print("Monitoring stopped.")
        break

Temperature Logging

from lager import Net, NetType
import time
import csv

tc = Net.get('DUT_TEMP', type=NetType.Thermocouple)

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

    start = time.time()
    for i in range(100):
        elapsed = time.time() - start
        temp = tc.read()
        writer.writerow([elapsed, temp])
        time.sleep(1)

print("Logging complete")

Thermal Protection

from lager import Net, NetType
import time

tc = Net.get('BOARD_TEMP', type=NetType.Thermocouple)
psu = Net.get('VDD', type=NetType.PowerSupply)

MAX_TEMP = 85.0  # °C

psu.set_voltage(3.3)
psu.enable()

while True:
    temp = tc.read()
    print(f"Board temp: {temp:.1f}°C")

    if temp > MAX_TEMP:
        print("OVER TEMPERATURE! Shutting down.")
        psu.disable()
        break

    time.sleep(1)

Hardware Integration

Hardware	Features
Phidget	K-type thermocouple interface

Notes

• Thermocouple nets work directly without enable()/disable() calls
• Temperature is returned in degrees Celsius
• Reading rate depends on thermocouple hardware
• Net names must match those configured on the Lager Box