Merge pull request #3 from RosanaRufer/rr/add-requirements.txt

update "current system" with latest available components

main/overview.md

@@ -2,31 +2,23 @@
 
 The OpenEnergyMonitor system has the capability to monitor electrical energy use / generation, temperature and humidity.
 
-The system is made up of five main units. These can be configured to work for a variety of applications. The system is fully open-source, both hardware and software. All hardware is based on the [Arduino](http://www.arduino.cc/) and [Raspberry Pi](http://raspberrypi.org) platforms.
+The system is made up of four main units. These can be configured to work for a variety of applications. The system is fully open-source, both hardware and software. All hardware is based on the [Arduino](http://www.arduino.cc/) and [Raspberry Pi](http://raspberrypi.org) platforms.
 
 % ![image](img/oemfpsystemdiagram.png)
 
 <p><b>Current system</b></p>
 
-```{image} img/emontx4-min.png
-:width: 50px
-:align: left
-```
-
-**emonTx v4:** A 6x circuit energy monitoring node. Transmits data via an inbuilt 433MHz radio to an emonBase. It can also send data via a Wi-Fi extension board or directly via USB.<br><br>
-
 ```{image} img/emonVs-min.png
 :width: 50px
 :align: left
 ```
-**emonVs v1.1:**<br>Combined precision voltage sensor and power supply.<br><br>
+**emonVs v1.3.2:**<br>Combined precision voltage sensor and power supply, sends voltage data and power to the emonPi2 via RJ45.<br><br>
 
-```{image} img/emonbase-min.png
+```{image} img/emonpi-min.png
 :width: 50px
 :align: left
 ```
-**emonBase:** A Raspberry Pi base-station that receives data sent from the emonTx4. Hosts the emonCMS software for full local data logging and visualisation capability. With new direct SPI RFM69 radio transceiver.
-<br><br>
+**emonPi2 v2.0.1:**<br>A Raspberry Pi shield offering 6x clip-on CT current sensor inputs, Real/Active power measurement, temperature sensing and radio transreceiver.<br><br>
 
 ```{image} img/ctsensor.png
 :width: 50px
@@ -46,6 +38,20 @@ The system is made up of five main units. These can be configured to work for a
 
 <p><b>Earlier hardware</b></p>
 
+```{image} img/emontx4-min.png
+:width: 50px
+:align: left
+```
+
+**emonTx v4:** A 6x circuit energy monitoring node. Transmits data via an inbuilt 433MHz radio to an emonBase. It can also send data via a Wi-Fi extension board or directly via USB.<br><br>
+
+```{image} img/emonbase-min.png
+:width: 50px
+:align: left
+```
+**emonBase:** A Raspberry Pi base-station that receives data sent from the emonTx4. Hosts the emonCMS software for full local data logging and visualisation capability. With new direct SPI RFM69 radio transceiver.
+<br><br>
+
 ```{image} img/emonpi-min.png
 :width: 50px
 :align: left