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Arduino interface for Telemetry - a library for data visualization and communication with embedded devices
C++ C
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Drag-n-drop C++ Arduino wrapper of the Telemetry library.

Telemetry lets you exchange data between an Arduino board and a computer, often through a serial or bluetooth connection, using a convenient interface.

Any exchanged data carries a label, called topic. Topics are used to identify data, and act as a named communication channel.

  • Sending data from the Arduino is called publishing.
#include <Telemetry.h>
int32_t i;

void setup() {
  Serial.begin(9600); // Do not forget to initialize serial
  i = 0;

void loop() {
  // Send counter value under topic `foo`
  Telemetry.pub_i32("foo", i);   i++;
  • Receiving data on the Arduino is done by attaching a variable to a topic. When new data is received under the topic, the attached variable is updated.
#include <Telemetry.h>
float thr;

void setup() {
  Telemetry.attach_f32_to("throttle", &thr);

void loop() {
  // thr is updated here, if new data is received under `throttle`


  1. Dowload from the latest release
  2. Unzip into your Arduino library folder
  3. Start Arduino IDE, go into Sketch->Include Library->Telemetry

On the computer

As soon as a device publishes data, it is possible to leverage the power of the Pytelemetry Command Line Interface PyPI version.

This terminal application lets you interact with the device, using simple commands.

Opening a live plot is as simple as

:> plot someTopic

Plot example

Central documentation

All the information can be found from the Wiki Home.

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