The Smart Pi 2 expansion module extends the Raspberry Pi with interfaces to measure voltage and current in a contactless manner. It enables to control electricity production consumption and turns the Raspberry Pi into a full featured smart meter. All measurement data can be stored and are accessable via the local network or Internet for disposal.
Current is measured contactless via inductive current sensors. In the standard version currents up to 100 A can be measured. A simple changeover of the jumper enables the connection of any cable re-converter with a secondary current of 1 A. This allows currents of up to 700 A and more to be detected.
The SmartPi 2 has 4 inputs for current measurement (L1, L2, L3, N) and three inputs for voltage measurement. This allows measurements on all three phases and even the neutral conductor. The SmartPi 2 and the Raspberry Pi can be powered by the voltage input. An external power supply is not required.
If the voltage measurement is connected, the direction of the energy flow can be determined and the SmartPi is a full-fledged bi-directional smart meter.
The interfaces to the Raspberry Pi are electrically isolated to ensure maximum safety.
Website and REST interface
Open Source software is written in Go and includes all the necessary drivers, a web server with web page and a REST interface. All measurement data can be logged and displayed on tablet or smartphone. The REST interface allows to integrate the SmartPi into self-made applications and apps.
Application examples for the SmartPi:
Features / Specifications: