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Problem using TFT and RX-TX at the same time
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Problem using TFT and RX-TX at the same time

by ArmanH on Sun Sep 27, 2020 7:36 pm

Dear all,

I am using an Adafruit 1947 capacitive TFT touch screen which I mounted on an Uno. I also have a Nano 33 BLE, which is connected to a sensor. I want to control a condition with the touch panel. For that, I coded the Nano to give the output to Serial1. I checked with bare Uno and it was able to communicate well with Nano. But the problem arises when I connect the TFT screen to the Uno. In that case, the Nano still sends the correct values, but the Uno gives the wrong number.

Any ideas?

PS: I have connected the two boards as described on http://thezhut.com/?page_id=1437, using resistors. I am turning on both by connecting to my PC. Long story short, Uno receives data fine w/o TFT, but when TFT is installed, it mixes up.

ArmanH
 
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Re: Problem using TFT and RX-TX at the same time

by adafruit_support_bill on Sun Sep 27, 2020 7:40 pm

Please do not double-post: viewtopic.php?f=47&t=169963

adafruit_support_bill
 
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Please be positive and constructive with your questions and comments.