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Omega Smartsensor Python SDK

Project description

Omega Smartsensor Python SDK

This Python SDK allows you to communicate with Omega Smart Sensor devices via I2C interface or Modbus interface and easily integrate them to embedded platform such as Raspberry Pi, etc...


Python 3.5+

Installation & Usage

pip install

The package can be installed by running:

pip install omegasensor
Then import the package:

from omegasensor import *


Clone from repository. And Install via Setuptools from source directory:

python install --user

Getting started

import time
from omegasensor import *  

def main():    
    bus = BusModbus('/dev/ttyUSB0', SMARTSENSOR_MODBUS_ADDR)   # for Modbus interface 
    # bus = BusI2C(1, SMARTSENSOR_I2C_ADDR) # for I2C interface
    ss = Smartsensor(bus)    

    print("Firmware 0x%08x" %    
    print("Device Id 0x%08x" %    
    print("Device %s" %    
    sensor_cnt =    
    print("Onboard %d sensors" % sensor_cnt)    
    print("Onboard %d outputs" %    

    sensor_units = [ss.sensor_unit(i) for i in range(sensor_cnt)]    

    while True:    
        print("Time: ", ss.current_time_str())    
        for i in range(sensor_cnt):    
            print("%0.2f" % ss.sensor_reading(i),    
                  " %s" % sensor_units[i],    
                  "\t", end='')    

if __name__ == "__main__":    


Examples can be found in SDK Example directory

Hardware Setup

Omega BTH-SMP smart probes can be used with the I2C interface. On Raspberry Pi, here are the connections:

Raspberry Pi BTH-SMP
Pin 3 /BCM 2 SDA
Pin 5 /BCM 3 CLK
Pin 1 3.3V
Pin 6 GND

Alternatively, Omega Smart sensor dongle can be used which converts I2C interface to Modbus interface. On Linux system, the dongle will show up as /dev/ttyUSB0 or /dev/ttyACM0 for example.

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