Dasshio
A Hass.io add-on that repurposes Amazon Dash buttons as physical triggers for Home Assistant automations.
What is Dasshio?
Dasshio is a Hass.io add-on that repurposes Amazon Dash buttons as physical triggers for Home Assistant automations. It works by scanning the local network for Dash button MAC addresses and sending HTTP POST requests to Home Assistant's API to execute configured actions like toggling lights or running scripts.
Home Assistant users with Hass.io who want to integrate physical buttons into their smart home setup, particularly those who have Amazon Dash buttons they wish to reuse.
It provides a simple, dedicated solution for Dash button integration within the Hass.io ecosystem, avoiding complex manual setups and leveraging Home Assistant's native API for reliable automation triggers.
Overview
Hass.io add-on to easily use Amazon Dash Buttons with Home Assistant
Use Cases
Best For
- Turning Amazon Dash buttons into smart home triggers
- Adding physical buttons to control Home Assistant automations
- Repurposing discontinued Dash hardware for IoT projects
- Creating quick-access controls for lights, scripts, or scenes
- Building a low-cost physical interface for a Home Assistant setup
- Triggering custom HTTP endpoints from a button press
Not Ideal For
- Users without a Home Assistant or Hass.io environment
- Projects needing to integrate non-Dash physical buttons or modern IoT devices
- Networks with strict security policies that block ARP/UDP scanning
- Applications requiring instantaneous, sub-second trigger responses
Pros & Cons
Pros
Leverages Hass.io's internal network routing for efficient API calls, using URLs like http://hassio/homeassistant/api to avoid external traffic.
Supports both native Home Assistant service calls and custom HTTP POST requests to any URL, allowing diverse automation triggers beyond HA.
Includes a configurable timeout delay (default 10 seconds) to avoid multiple triggers from a single button press, enhancing reliability.
Can be run as a systemd service outside Hass.io, documented with steps for virtualenv-based Home Assistant setups.
Cons
Relies solely on Amazon Dash buttons, which are no longer sold and may be hard to acquire or configure without official app support.
Requires extracting MAC addresses via a manual wifi configuration process, which can be error-prone and non-intuitive for non-technical users.
The README admits latency can cause issues, necessitating adjustments to request_timeout_secs, which may affect reliability in congested networks.
Only works with devices detectable via ARP/UDP scanning, excluding newer button types or environments where this scanning is unreliable.
Frequently Asked Questions
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