# Sending sensor data to TTN

**URL:** <https://www.thethingsnetwork.org/forum/t/sending-sensor-data-to-ttn/63115>\
**Category:** LMIC\
**Created:** [May 20, 2023, 4:25am UTC](https://www.thethingsnetwork.org/forum/t/sending-sensor-data-to-ttn/63115 "2023-05-20T04:25:25Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![thanhviet1801](https://www.thethingsnetwork.org/forum/letter_avatar_proxy/v4/letter/t/8e8cbc/32.png) [@thanhviet1801](https://www.thethingsnetwork.org/forum/u/thanhviet1801)\
**Post date:** [May 20, 2023, 4:25am UTC](https://www.thethingsnetwork.org/forum/t/sending-sensor-data-to-ttn/63115/1 "2023-05-20T04:25:25Z")

</div>

Hello everyone, I am a noob. I am doing a first project using stm32f4 to communicate with mpu6050 and GPS, arduino Uno to communicate with sx1276 lora (I have successfully connected to the gateway and sent hello, word to TTN using ttn-otaa example). When I communicate uart between stm32 and arduino, after calling “char data;” the data displayed on the serial monitor is as follows  
Ax = 0.811, Ay = 0.095, Az = -0.579 --------- Gx = -4.267, Gy = 1.840, Gz = -1.779  
Time = 8:26:59 , Date = 200523.00000, latitude = 619.00608799931513 , longitude = 2088.7998520383617  
Please help me how to send data to TTN