View Full Version : Serial2 show up on Serial Monitor for Teensy 3.0

08-02-2013, 02:23 AM

I am new to the teensy 3.0 and I had a question about the three UART ports on the teensy 3.0. I know that if I were to write Serial.begin('baud rate') I would be able to see the serial data on my serial monitor. However, I don't know how to do this when utilizing multiple serial pots on the teensy. Currently I have a GPS communicating on the RX lines of Serial1, and a openlog which records all sensor data through Serial2. Is there any way I can view this data that is being recorded while the program is running, like the serial monitor, instead of taking out my microSD and checking the data after I run the program for a couple seconds? It would be sooooo much easier to debug my code and make sure I am on the right track.

Any advice is appreciated.



08-02-2013, 02:35 AM
If you are writing ascii strings to the Serial2 log, can't you just write them to Serial as well until the code is debugged?


08-02-2013, 04:25 AM
You can use another Teensy running the example from File > Examples > Teensy > USB_Serial > USBtoSerial. Just connect the RX pin on that other Teensy to the serial line you want to monitor, and then run a terminal emulator (Hyperterminal, Teraterm, Seyon, Minicom, etc) or even Arduino's Serial Monitor (you can run 2 separate copies of Arduino if you like) to view the data from the 2nd Teensy.

You can also use one of these cables, which is a USB-serial converter. But they're more expensive than another Teensy, and not nearly as useful for reusing when you want to do something else.


10-22-2014, 04:02 PM

I am trying to setup Openlog for recording radiation data for Safecast (http://blog.safecast.org). We have a FIO running fine, but we would like to move to a Teensy system. Do you have a sample file I can use for setting up OpenLog with a teensy?