Creating my own ZWave network

Scope

I have been experimenting with ZWave devices a long time. There are two ZWave controllers I have cast my eye on:

• The Vera Lite http://getvera.com/controllers/veralite/
• VERA PLUS Smart Home Gateway: https://zwave-smarthome.de/shop/vera-plus-smart-home-gateway/

The prior was using a very weak CPU, was very slow, so I decided against it. The latter, oh yes, It got fucked up. And I bricked it, more or less.

The reason was that the device wanted to install an upgrade imge. As always, upgrades are good. So I triggered the upgrade. Unfortunately the upgrade (legacy, standard Vera firmware from the vendor, directly, no tinkering) was corrupt, returning the Vera into a state where it would not react any more. No more. Period. Not even a reset was possible. Nothing.

Whenever I am getting angry, I want to find out if there is a way in. Maybe a serial interface?