> For the complete documentation index, see [llms.txt](https://vrs-guidebook-2nd-edition.gitbook.io/vrs-guidebook-2nd-edition/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://vrs-guidebook-2nd-edition.gitbook.io/vrs-guidebook-2nd-edition/programming/blocks/utilities/telemetry.md).

# Telemetry

Telemetry allows you to monitor the robot's status, sensor readings, and other critical information in real-time during operation.It is useful for debugging, troubleshooting, performance monitoring, data logging and more. The blocks here allow you to show telemetry data. 

**addData (key and number)**

![](https://lh7-rt.googleusercontent.com/docsz/AD_4nXcwwlp7ulAJ3g1HQd4Z2hUtqdsrHtU-OHEKmUrC7CxXbroI0xb7sWfi1jaRGJuz2qq5RicNiufZDcmOIvlO9il3ShAhe_DM0zt0htP15jOs2dm6HY5q30FIvcI-5XbIBU-PVCvrvqx-GIk2UOO8QV5yIiPv?key=hRw9bBhBfp1lHBJ7rUAI2Q)

Sends key and numeric value to Driver Station for display. The telemetry shows “key: 123” in the given example.

**addData (key and text)**

![](https://lh7-rt.googleusercontent.com/docsz/AD_4nXeiTE6f6hOwEtedhCJMDBl0pZal2Q_udg-puCa3B5xmV20XH9XQo7zG4pes6Ls70VPxMiBxk6b_Lnf8vP0JhynoCLHYEvgnA_NrjEsXIETRv4_ZFHDSpu13muwwhHSxZIpD63fwSnL5bGCfhCdNt6iniSIu?key=hRw9bBhBfp1lHBJ7rUAI2Q)

 Sends key and text value to Driver Station for display. The telemetry shows “key: text” in the given example.

**call Telemetry.update**

![](https://lh7-rt.googleusercontent.com/docsz/AD_4nXeckJyBVLOASaQADWKB_uETxPN5UfhiidCBLVs2BIPyjXg-2SQiCpUTKJhqZqw38R05ZyxV9fkYtzuRpUxRyyUD6uxUyZ0DSg0OvLU7rrxbnqIvWOACZ68PZ2V2coF_d6H6_bJ3NMLU9DQeCsKxezo1GuHX?key=hRw9bBhBfp1lHBJ7rUAI2Q)

Sends accumulated telemetry data and causes the driver station to display it. Before calling this function, the telemetry information is buffered and not visible.