Product

Heron

A passive DNS monitor for home networks. See what devices are connecting to, in a browser, on your own network. No accounts or cloud. No telemetry.

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Heron connects to your router over Wi-Fi. You configure your router to use Heron as its DNS server. Heron forwards queries to your usual DNS resolver while logging what it sees. The interface shows the data in real time.

Everything stays on the device. Nothing is stored permanently. When you unplug it, the data disappears.

The firmware is open source.

  • Heron device with Raspberry Pi Pico 2 W
  • USB-C power cable
  • Quick start card

You need: a router with configurable DNS settings and a web browser.

Each device is assembled and tested before shipping. Lead time is usually under two weeks, depending on the queue.

Ships with tracked delivery. No subscription, no recurring fee, no premium tier. One purchase, yours forever.

For full terms, see the refund policy.

Processor
Raspberry Pi Pico 2 W (RP2350), dual-core ARM Cortex-M33 @ 150MHz
Memory
520 KB SRAM (volatile). No flash storage for user data.
Connectivity
2.4 GHz Wi-Fi (802.11n)
Power
USB, 5V/1A
Data retention
None. Volatile memory only. Data disappears on power loss.
Cloud dependency
None. Local management only.
Firmware
Open source (MicroPython). Available on GitHub.
Interface
Web-based, served directly by the device. No app required.
DNS log
150-entry ring buffer in RAM
Heron privacy network monitor device by Northsline
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