Dear all,

I'm a complete newbie in this community. As a postdoc, I'm responsible of 
building a off-computer control system. I decided to use BeagleBone as the 
central controller. But since I have other academic jobs, I wish I could 
finish the project quick and dirty. So maybe I need some specific guidance 
on it.

Now for the first version of the system, my idea is just have two buttons 
appearing the touch screen and when I press either of the buttons, the BBB 
will send out a string through the serial port. I have another device 
waiting for the string command to trigger some control, so the rest is 
already ready.

I think this is rather easy, isn't it? But I spent about a whole day today 
trying to figure out how to send the string out, and still cannot be 
successful. Not to mention the touchscreen part. I have experience in 
Matlab and LabVIEW programming, a little C experience, no Javascript or 
Python, and now I have a BBB, a 7-inch touch screen, a USB cable, and a 5V 
3A power supply. I can make the serial port with connectors to the board 
with no difficulty. I have tried to boot the board with the 5 power supply 
and the LCD screen hooked up, and I could see the operating system. So 
could anyone tell me how to step into this field with a relatively quicker 
method? Thanks!

Sincerely,
Henry

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