---
title: Arduino client library
description: Use the InfluxDB Arduino client library to interact with InfluxDB.
url: https://docs.influxdata.com/influxdb/v2/api-guide/client-libraries/arduino/
estimated_tokens: 207
product: InfluxDB OSS v2
version: v2
publisher: InfluxData
canonical: https://docs.influxdata.com/influxdb/v2/api-guide/client-libraries/arduino/
date: '2025-04-02T15:54:32-06:00'
lastmod: '2025-04-02T15:54:32-06:00'
---

This page documents an earlier version of InfluxDB OSS.[InfluxDB 3 Core](/influxdb3/core/) is the latest stable version.

#### API token hashing is enabled by default in InfluxDB OSS 2.9.0

Stronger token security: tokens are stored as hashes on disk, so a
copy of the database file doesn’t expose usable tokens. Existing
tokens are hashed on first startup and the original strings can’t
be recovered afterward — **capture any plaintext tokens you still
need before you upgrade**.

For more information, see [Token hashing](/influxdb/v2/admin/tokens/#token-hashing).

Arduino is an open source hardware and software platform used for building electronics projects.

The documentation for this client library is available on GitHub.

[Arduino InfluxDB client](https://github.com/tobiasschuerg/InfluxDB-Client-for-Arduino)