Overview

Definitions

• Dongle - The USB dongle which is used to communicate between the devices and your computer.
• Device - The actual switch sensing device which is placed over your wall socket.
• Device Id - The long identifier that is unique to each physical device (devices and dongles).
• Network Id - The short hand identifier that the dongle gives to the device to refer to it after commissioning. Recommissioning a device changes it.
• Channel Id - Each socket on the device is referred to as a channel, the current devices have exactly two of them (0 - top and 1 - bottom).

Findings

• Devices have a sampling frequency of 10s.
• Devices store time locally.
• Devices have an ability to execute a preset schedule down to the second (we don't currently take advantage of this).
• Devices store samples until a dongle requests them.
• Devices are reset (samples are cleared and time is reset) when recommissioning.

Hardware

• The Dongle uses an FTDI FT232R chip for it's USB communication.

Open Questions

• How big is the buffer on each device?