Sending arduino a numerical command to trigger a function

Question

Ok, I have been researching this for a few days now.

I am trying to learn how to send a numerical value to an arduino and have it select the function that I assign that code.

I am trying to start small and work my way to a final project involving multiple arduinos.

In the short term I would like to from the serial monitor send a code say 5/1 to tell my arduino to set pin 5 HIGH

eventually I would like to have multiple arduinos in a mesh network using nrf24l01+ modules to be able to accomplish this through a 3 step value.

1/5/1 to tell the arduino assigned as (1) to set pin 5 to HIGH or 2/7/0 Arduino (2) to set pin 7 to LOW

Right now I am am simply trying to use the serial monitor to communicate with one arduino.

I feel this is a good first step to trying to tackle this project as I feel this can very quickly become a very complicated undertaking.

I am not great with code and after not doing anything for almost a year due to family and relocation issues I am very frustrated.

Anyone that might be able to help point me toward a tutorial that might be able to help me with the basics would be greatly appreciated.

If you are interested the eventual goal of this is home automation and other smart home functions.

This is a project that I have been thinking about and buying hardware for over the past 2 years and would like to get started on.

I did run across this post:

http://forums.trossenrobotics.com/tutorials/how-to-diy-128/complete-control-of-an-arduino-via-serial-3300/

but I am having no luck getting the code to process correctly.

Is there another method or better tutorial out there?

Robert Peter Oakes · Accepted Answer

should find all you need here http://www.element14.com/community/groups/arduino/blog/2014/06/09/fast-track-to-arduino-programming regards Peter

Robert Peter Oakes · Answer

One of the later videos has Ethernet buffer and serial working at the same time and still only a single interpreter of the commands

my internet of holiday lights challenge project is implementing radio, network and serial all at the same time with command processing to determine which slave controller to send out the command to, the destination then interprets the command to determine what do do, for example, change the colour of an RGB LED strip, change the sequence pattern on a star shaped neo-pixel , update a display text on a MATRIX display.

Every one of the slaves with their respective Lights options are connected via NRF24L01 radios, the master being a subscriber to several MQTT topics via WIFI and the internet, I am in the process of adding another module to the mix that uses a WIFI MCU ( TI Launchpad CC2200 ) and will get its own subscription data via MQTT and drive relay outputs

Does this sound a bit like your project, perhaps on a grander scale, if so, all my code and designs are being shared via the challenge topic areas here http://www.element14.com/community/groups/arduino/blog/2014/12/09/byob-party-bring-you-own-bulbs--the-internet-of-holiday-lights

Hope this helps

Sending arduino a numerical command to trigger a function

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