is it possible to slave 2 arduino in raspberry pi 3 in serial port using nanpy

[arvin]

it's possible to slave 2 arduino in raspberry pi 3 in serial port using nanpy ?? if not please recommend another way to solve my problem. thanks in advanced

[mahjongg]

What actually IS your "problem"?

[KLL]

from doc

Nanpy autodetects the serial port for you, anyway you can manually specify another serial port:

from nanpy import SerialManager
connection = SerialManager(device='/dev/ttyACM1')

so you can manually connect to 2 ( USB connected ) arduinos
after you find the "ttyACM1 / 2"... info )

[arvin]

so you can manually connect to 2 ( USB connected ) arduinos
after you find the "ttyACM1 / 2"... info )

im using this code. i want output is on/off 1 LED in every arduino . but the problem is one arduino only to on led i want both

Code: Select all

from nanpy import SerialManager
from time import sleep

from nanpy import ArduinoApi


connection = SerialManager(device='/dev/ttyUSB0')
connection = SerialManager(device='/dev/ttyUSB1')
a = ArduinoApi(connection=connection)
b = ArduinoApi(connection=connection)
a.pinMode(7, a.OUTPUT)
b.pinMode(7, b.OUTPUT)
a.digitalWrite(7, a.HIGH)
b.digitalWrite(7, b.HIGH)
print"LED ON"
sleep(3)
a.digitalWrite(7, a.LOW)

[KLL]

pls use code tags
should it be like

Code: Select all

connection1 = SerialManager(device='/dev/ttyUSB0')  # Arduino 1
a = ArduinoApi(connection=connection1)
connection2 = SerialManager(device='/dev/ttyUSB1')  # Arduino 2
b = ArduinoApi(connection=connection2)

your code is overwriting its variable ( link ) so only the second ( line) could work.

are that connections / ports already tested by a serial monitor tool ( like arduino ide... ) means verified?

[mahjongg]

added code tags, but there are no indentations in this code, so it was not necessary.