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Uno Serial Read Problems

JaySettle
Wed, 01 Oct 2014 16:36:44 GMT

I'm having a problem reading a simple potentiometer hooked up to my arduino on analog pin 0 with the Uno Read and the Generic Serial Read in Grasshopper. The port available shows port 5 is there, and the Open port with port 5 shows the "Hooray" message, however the Uno read and generic Serial read I can't get to work. Please see attached. [Grassh](//res.cloudinary.com/moot/image/upload/t_d3-gallery-s2/v1412181408/:firefly:H3QT:grassh.png.jpg)

Andy Payne
Fri, 03 Oct 2014 12:56:04 GMT

If you're just using a potentiometer (and don't have some sort of complicated circuit setup, etc.) then I would recommend just using the Uno Read. You could use the Generic Serial Read, but the Uno Read will be a bit easier. I think the key is that the Uno Read is setup to work with the Firefly Firmata. My hunch is that you may not have the Firefly Firmata uploaded to your Arduino board and thus the Arduino isn't reading the latest sensor data and sending over to Grasshopper via the serial port. Can you try uploading the Firefly Firmata (click here for more info: http://www.fireflyexperiments.com/resources/) and then try re-opening the port in Grasshopper and using the Uno Read to give you your sensor values?

JaySettle
Sat, 04 Oct 2014 01:52:27 GMT

Ah you are correct I have the standard firmata installed. Thanks I'll check that when I get back to the house.