Arduino port issues with Ethernet shield

[randy]

Hello all,

First off let me say thank you for an awesome plugin.. I'm just getting started with Arduino so please be patient with me

Started a new thread for this because I'm not really sure if this is an ethernet shield problem, Arduino problem, or plugin problem or just something I am doing wrong....

I have an Arduino UNO R3 with an ethernet shield. This is connected to an 8 channel relay. Strange problem is - with the ethernet shield installed on the arduino and connected via ethernet, output pins 6 and 7 will not work at all. When they are connected to any of the relay channels the led on that particular channel on the relay will flash and if I try to use those pins to control the relay it will not respond. It does not seem to matter if I have created an output pin 6 or 7 in the plugin either. As soon as the Arduino boots these pins behave like this. From the docs I can find about the ethernet shield I'm using it appears that it will occupy pins 4,10,11,12,13,14..but not 6,7.

If i remove the ethernet shield and connect to the Arduino via USB, pins 6 and 7 and the relay work as they should.

Any ideas on what may be going wrong here?

Hardware:
Arduino UNO R3 - from Sparkfun
Ethernet Shield 2 - from Sparkfun
8 Channel Relay - from Sainsmart (5volt version)
Arduino plugin (latest beta on Raspbian..although I have tried on Windows HS3 environment as well)

Thanks for the help in advance!

Ben

I haven't a clue. I am using 3, 5 and 6 on 3 of my Mega boards with Ethernet shields for PWM. I no longer use UNOs but when I was initially testing designs I used a UNO with an Ethernet shield and used 3, 5 and 6 for PWM and 7, 8, 9 and 10 for digital I/O.

[damiene77]

Hello all,

First off let me say thank you for an awesome plugin.. I'm just getting started with Arduino so please be patient with me

Started a new thread for this because I'm not really sure if this is an ethernet shield problem, Arduino problem, or plugin problem or just something I am doing wrong....

I have an Arduino UNO R3 with an ethernet shield. This is connected to an 8 channel relay. Strange problem is - with the ethernet shield installed on the arduino and connected via ethernet, output pins 6 and 7 will not work at all. When they are connected to any of the relay channels the led on that particular channel on the relay will flash and if I try to use those pins to control the relay it will not respond. It does not seem to matter if I have created an output pin 6 or 7 in the plugin either. As soon as the Arduino boots these pins behave like this. From the docs I can find about the ethernet shield I'm using it appears that it will occupy pins 4,10,11,12,13,14..but not 6,7.

If i remove the ethernet shield and connect to the Arduino via USB, pins 6 and 7 and the relay work as they should.

Any ideas on what may be going wrong here?

Hardware:
Arduino UNO R3 - from Sparkfun
Ethernet Shield 2 - from Sparkfun
8 Channel Relay - from Sainsmart (5volt version)
Arduino plugin (latest beta on Raspbian..although I have tried on Windows HS3 environment as well)

Thanks for the help in advance!

Ben