# Guidance Request on Basic Serial Communications to PC

**URL:** <https://forum.arduino.cc/t/guidance-request-on-basic-serial-communications-to-pc/927563>\
**Category:** Networking, Protocols, and Devices\
**Created:** [November 21, 2021, 9:34pm UTC](https://forum.arduino.cc/t/guidance-request-on-basic-serial-communications-to-pc/927563 "2021-11-21T21:34:43Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![cliffcoulter](https://avatars.discourse-cdn.com/v4/letter/c/ecae2f/32.png) [@cliffcoulter](https://forum.arduino.cc/u/cliffcoulter)\
**Post date:** [November 21, 2021, 9:34pm UTC](https://forum.arduino.cc/t/guidance-request-on-basic-serial-communications-to-pc/927563/1 "2021-11-21T21:34:43Z")

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I'm a newbie working with the Arduino Uno and am looking for guidance on a Libary and direction on studies on how to accomplish in coming to PC serial requests connected to Uno through a FT232RL 3.3V 5.5V FTDI USB to TTL Serial Adapter.

Accomplished so far: Established outgoing coms from PC running [XOJO](https://www.xojo.com/?gclid=Cj0KCQiA-eeMBhCpARIsAAZfxZB89Yg0YcBxOqVYkSK7js5SIEzk6VH96ZrrU7bqMS_F6eptmUuEOosaAndVEALw_wcB) via [USB to TTL converter connected to Tx/Rx](https://www.ebay.com/itm/223507758747?_trkparms=ispr%3D1&hash=item340a19be9b:g:IykAAOSwOdVc0bJk&amdata=enc%3AAQAGAAACoPYe5NmHp%252B2JMhMi7yxGiTJkPrKr5t53CooMSQt2orsSvtkx670Z0mbyfWqmxLFLYXxFy%252Fzq665T7SNCuslTJDCyDTI8%252BQuJtMJraKM4VzH6HgmDDniFkV2Ltvu0%252FHz9SAK4PViNh0iIL41BRto5CpDVfeZKOrMjJkswGv%252BeJGtsAAPlF4WiHUHmaL50Vz0J6OxXIZ%252B9tZIHFK1d2XXIRTYW4OkJ%252FzAawhe4LMEUzzpzkysM88%252Fdjgd69l4OfTEiZdUq0eC%252BpdrKDE7zghkfH7fXxxytM4meaQ2FOXtUowbHFBEwVUtjjTz32jk%252BJlApic1Hfimizpu8yGaQ2iUkTELxi6NFOx5BP7uzpI86wVTH%252FusdUxVTqR7nmMgd40UrGkrBTUD7hezJMIWPewqZ4Vram%252BBt7wKmgd8WNCJMPRAMz01XnmjTIMFLel0txeqRid7VTPvji03iupHx3GmgBkzkfoM0NVCoGIBN8E4K4ilGijy2zlhlfCaQN9OezX%252Ba27Dn0hKpv5SgPhLTC7M7YMt5CvCMEmD29TfuFwXWpuXpigQclqUnJw2hNq8AgyekJE6sDWydsPr98BqeryWyck%252FZWhwKWNFoIGMW0QAhl94C5yuHKCGRLlzEljBkJ80VJju%252FCU%252F7j5vkTh2I1W7da92gDP2PXOdY%252FehC5xyx9iyj2zSKB9ip4lC56taW1vJgdU1FsUz9ZOshshwYx7k0f5Q%252BUArlt36sIRNGBHB%252Bvw1P7aVfJ%252FW%252BmmkkE8oEPkK25yK5Grhn4EXTmsddUuJfH6oF0IELuq%252BNvpJqQAHMv1rbdj9iodmkh7q9qjq00T0MRYwXyk0dSp1DcHixkmrBacCpE5C%252Byd%252FW90vtSz%252BjcqUWnQ12yZJC02vX3dps9QCg9Q%253D%253D%7Cclp%3A2334524%7Ctkp%3ABFBMpLXTw6hf) to control output ports, steppers, servos, LEDs, etc from a program on Mac called [XOJO](https://www.xojo.com/?gclid=Cj0KCQiA-eeMBhCpARIsAAZfxZB89Yg0YcBxOqVYkSK7js5SIEzk6VH96ZrrU7bqMS_F6eptmUuEOosaAndVEALw_wcB). Observe temperature data in the serial monitor. So far so good.

Need to Understand: How to make serial information, such as a temperature readings available at the Tx/Rx pins so Mac running, XOJO can read it in. Do I need a Libary to accomplish this? There is a great deal of confusing information to me available, so study suggestions would be wonderful. Eventually I hope to set this up via a RS-485 network.

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**Author:** ![groundFungus](https://avatars.discourse-cdn.com/v4/letter/g/73ab20/32.png) [@groundFungus](https://forum.arduino.cc/u/groundFungus)\
**Post date:** [November 21, 2021, 9:54pm UTC](https://forum.arduino.cc/t/guidance-request-on-basic-serial-communications-to-pc/927563/2 "2021-11-21T21:54:36Z")

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If you can send the data to serial monitor you are mostly there. Switch the out put to a serial port that the XOJO app can listen to. It is beyond the scope of the Arduino forum to know how to make XOJO read the data.

> [@cliffcoulter](#):
>
> How to make serial information, such as a temperature readings available at the Tx/Rx pins so Mac running, XOJO can read it in.

What kind of data can XOJO read.

[The serial input basics tutorial](https://forum.arduino.cc/t/serial-input-basics-updated/382007) may be of interest.

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**Author:** ![system](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/system/32/1140315_2.png) [@system](https://forum.arduino.cc/u/system)\
**Post date:** [May 20, 2022, 9:55pm UTC](https://forum.arduino.cc/t/guidance-request-on-basic-serial-communications-to-pc/927563/3 "2022-05-20T21:55:27Z")

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Closed on May 20, 2022, 9:55pm UTC

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