# Logs

Starting from v.1.0.3, BBOB collects the operation logs that can be found in /mnt/sd/logs.

They provide information about the unit operation, like app start, readings from BBO units, transmissions to B3, buffering etc.

Some examples of logs are presented below.

<figure><img src="https://1482390586-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FegpnAPlZcRY7vPT5SNXz%2Fuploads%2FrK57VBh2rySAp32C52wZ%2Fimage.png?alt=media&#x26;token=e5eba738-c41a-4f5f-a462-c3ab3836443d" alt=""><figcaption><p>App start</p></figcaption></figure>

<figure><img src="https://1482390586-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FegpnAPlZcRY7vPT5SNXz%2Fuploads%2FW4P5Nwu8cZwvhPtuIhYS%2Fimage.png?alt=media&#x26;token=df7cc3f5-65f8-4081-9171-ffc2da02cf00" alt=""><figcaption><p>B3 connection is restored and data are sent from the buffer</p></figcaption></figure>

<figure><img src="https://1482390586-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FegpnAPlZcRY7vPT5SNXz%2Fuploads%2FME0GlQNGKX66iMtmrfMR%2Fimage.png?alt=media&#x26;token=2de9f2cf-3908-428c-84fa-f91ca85e8fe3" alt=""><figcaption><p>Data received from BBO and sent to B3</p></figcaption></figure>

<figure><img src="https://1482390586-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FegpnAPlZcRY7vPT5SNXz%2Fuploads%2F60RlhIS2UjAjWw9XI9Id%2Fimage.png?alt=media&#x26;token=0c8db676-9f39-4387-b630-a0fa82a3f0cc" alt=""><figcaption><p>No contact with B3, data are buffered</p></figcaption></figure>